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    Thinking about the Twelfth Five-Year Planning of Air Pollutants Control for China's Coal-fired Power Plant
    WANG Zhi-Han, PAN Li, ZHANG Jing-Jie, YANG Fan
    Journal of Environmental Engineering Technology    2011, 1 (1): 63-71.   doi: 10.3969/j.issn.1674-991X.2011.01.011
    Abstract5674)      PDF(pc) (1468KB)(3644)      
    During the Eleventh Five-Year Plan period, great achievements of coal-fired power plant air pollution control in China's power industry, which had reached the world advanced level, had been made. Despite more than 10 times growth of thermal power installed capacity during the period, dust emissions remained a slight decrease; sulfur dioxide control made remarkable achievements, having made a decisive contribution to the national energy conservation and emission reduction targets; nitrogen oxide control made preliminary outcomes and flue gas denitrification projects had been in construction. During the Twelfth Five-Year Plan period, the main tasks of air pollution control in power industry will turn to nitrogen oxide control. In the planning, some principles should be considered as follows: source control and end-of-pipe treatment should be combined; key pollutants control and the best availability technologies should be insisted as a guide; key control indexes should be considered at different levels and written into national planning, national environmental protection planning and power industry environmental protection planning. In respect of air pollution control measures, it is necessary to change development mode of power, strengthen technical guidance and basic work, adhere to the technology and management innovation, and improve the management level. Key words:coal-fired power plant;air pollutant;Twelfth Five-Year Plan
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    Cited: Baidu(24)
    Disposal and Management of Waste TFT-LCD
    GUO Yu-wen LIU Jing-yang QIAO Qi LIANG Ji-jun YANG Dong-mei REN Qian
    Journal of Environmental Engineering Technology    2011, 1 (2): 168-172.   doi: 10.3969/j.issn.1674-991X.2011.02.028
    Abstract4858)      PDF(pc) (643KB)(3380)      
    The main parts of thin film transistor liquid crystal display (TFT-LCD) and environmental toxicity of liquid crystal materials were summarized. The toxicity characteristics of waste LCD in their leaching procedure, the route of their recycling and reuse, and the pollution problems were analyzed. Disposal technologies of waste TFT-LCD and related policies on their recycling and management both at home and abroad were reviewed, and on this basis the suggestions on waste TFT-LCD disposal and management were put forward.
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    Cited: Baidu(14)
    Screening of Best Available Techniques for Lead Smelting Pollution Prevention and Control
    WANG Bing SUN Qi-hong HU Xue-wen BAI Lu FANG Lin LIN Xing-jie YANG Xiao-song WANG Jing
    Journal of Environmental Engineering Technology    2011, 1 (6): 526-532.   doi: 10.3969/j.issn.1674-991X.2011.06.087
    Abstract4549)      PDF(pc) (832KB)(2647)      
    The related policies of lead pollution prevention and control in abroad, the best available techniques (BATs) for lead smelting pollution prevention and control of European Union, and the current smelting techniques of lead in China were briefly analyzed. A method integrating analytical hierarchy process (AHP) with the fuzzy comprehensive evaluation (FCE) was used to screen lead smelting pollution prevention and control technologies. In the method, the weights of various evaluation indices were determined by AHP and the lead smelting pollution prevention and control technologies assessed by FCE. Based on the AHP-FCE, the best feasible technique portfolio of lead smelting pollution prevention and control was put forward.
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    Cited: Baidu(8)
    Comparison of the Absorption and Desorption Characters of Activated Carbon Fiber and Granular Activated Carbon on Benzene, Toluene and Xylene Mixed Gas
    ZHANG Zhi-hong CHEN Ning YE Cui-ping XIE Hua-qing DAI Run-sheng
    Journal of Environmental Engineering Technology    2011, 1 (2): 162-167.   doi: 10.3969/j.issn.1674-991X.2011.02.027
    Abstract6636)      PDF(pc) (664KB)(2617)      
    The atmospheric pollution and indoor environment pollution generated from benzene, toluene and xylene (BTX) of widely used in paint and coating had been widely concerned with. Adsorption and recycling treatment technologies as effective means of pollution control and solvent recovery were still the research focus. To explore simple, low-energy consuming and easy-to-disseminate test means for evaluating absorption and regeneration performance of adsorption materials was in favour of their industrial applications and dissemination in indoor air cleansing. Based on the simple, low-energy consuming and easy-to-disseminate principle, the experiment used self-made glass adsorption tube to perform tube adsorption and thermal desorption, and to carry out comparative tests on desorption and regeneration characters of BTX mixture with Viscose-based activated carbon fiber (VACF) and Granular coconut-shell activated carbon (GAC) as the adsorptive material, in combination with the analysis of thermal desorption and gas chromatography. The results showed that under room temperature, the adsorption rate of VACF was much better than that of GAC, with the usage of VACF less than that of GAC. Under constant temperature 120 ℃ and nitrogen purge rate of 50mL/min, the VACF showed a superior desorption rate with Benzene and Toluene than GAC. Moreover, it showed a lower desorption rate of Xylene from VACF than that from GAC.
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    Current Status and Directions for Development of Cleaner Production Technology of Electrolytic Manganese Metal Industry in China
    DUAN Ning, DAN Zhi-Gang, SONG Dan-Na
    Journal of Environmental Engineering Technology    2011, 1 (1): 75-81.   doi: 10.3969/j.issn.1674-991X.2011.01.013
    Abstract5492)      PDF(pc) (1095KB)(2501)      
    No manganese no steel. Especially the coming out of 200 series stainless steel technology promoted the electrolytic manganese metal industry to rapidly become a big industry. Since this century, China has become the world largest producer and consumer of electrolytic manganese metal. Current capacity and technology level of the industry in China was introduced, the key limiting factors of development of the industry analyzed, its newest trends for cleaner production technology R&D presented, and its directions of R&D put forward.
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    Cited: Baidu(28)
    Study and Application of the Heavy Metal Ions Rapid Analysis Method
    YU Ruo-zhen Wang Hong-mei FANG Zheng YAN Zhen-guang WANG Hong
    Journal of Environmental Engineering Technology    2011, 1 (5): 438-442.   doi: 10.3969/j.issn.1674-991X.2011. 05.073
    Abstract4734)      PDF(pc) (697KB)(2229)      
    The rapid testing technology for heavy metal ions in environmental samples is in urgent need in the screening level in unexpected environmental pollution incidents and regional ecological risk assessment. Rapid detection methods of heavy metal ions in environmental samples include electrochemical methods and biological methods. There are standardized products of electrochemical anodic stripping voltammetry that can detect several heavy metal ions simultaneously. But the test costs are relatively high. With the nano-particle technology and quartz crystal microbalance analyzer introduced, ASV method will continue to reduce testing costs; Biological detection methods, including the immunoassay and functional DNA detection techniques. Heavy metal ions immunoassay has high-through out samples, testing, low cost. It has been widely used in food examination, which the immunoassay of mercury ions in environmental samples has become the standard testing methods. Immunosensor technology will extend the application space of rapid detection of heavy metal ions. Research of functional DNA sensor will provide a new technical means for the detection of heavy metal ions, but these studies in laboratory have not reached the level of practical application.
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    Directions for Development of Landfill Leachate Treatment Technologies under the New Standard in China
    DAI Jin-guo SONG Qian-wu ZHANG Yue QIN Qi
    Journal of Environmental Engineering Technology    2011, 1 (3): 270-274.   doi: 10.3969/j.issn.1674-991X.2011.03.045
    Abstract6035)      PDF(pc) (699KB)(2074)      
    Implementation of the new discharge standard for landfill leachate makes most landfill leachate projects in China face technical upgrade. The status of leachate treatment technologies and the main problems were analyzed. The development directions of different technology links were discussed on the base of the main engineering technical route of ’pre-treatment +biological treatment + advanced treatment’. It was put forward that the upgrading of existing technologies, and development and industrial application of new technologies were key areas for landfill leachate treatment technologies development. In these areas, the development and application of advanced oxidation technologies based on hydroxyl radical was an important research direction. Also an efficient integration between advanced oxidation processes and biochemical processes was a significant direction of technology development. The research results provided references for landfill leachate renovations and new building landfill leachate projects to meet the new standards.
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    Cited: Baidu(18)
    Environmental Industry of the United States: Policy Analysis and Lessons Learnt
    LIU Jia, QIN Hu
    Journal of Environmental Engineering Technology    2011, 1 (1): 87-92.   doi: 10.3969/j.issn.1674-991X.2011.01.015
    Abstract5799)      PDF(pc) (1019KB)(2052)      
    The United States takes a significant position in global environmental industry. The flourish of US environmental industry attributes to its effective industrial policies and incentives that, to a large extent, impose an important effect on many countries. The classification and development status of US environmental industry were introduced, and the framework of its environmental industry analyzed from the aspects of environmental regulation, technological innovation, commercialization, financial and tax incentives, and trade. Finally, combined with an analysis of the experiences and lessons of the development of US environmental industry, some policy suggestions on future development of the environmental industry in China were proposed.
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    Cited: Baidu(5)
    Research Progress of Cumulative Environmental Risk Assessment at Home and Abroad
    YUAN Peng LI Wen-xiu PENG Jian-feng SONG Yong-hui XU Wei-ning
    Journal of Environmental Engineering Technology    2015, 5 (5): 393-400.   doi: 10.3969/j.issn.1674-991X.2015.05.062
    Abstract1707)      PDF(pc) (2071KB)(1997)      

    With the focuses of environmental risk assessment gradually evolving from assessment of single source or stressor, single exposure route and single risk receptor toward integrated assessment involving several sources or stressors, multiple exposure routes and multiple receptors in recent years, the cumulative risk assessment has become a study hot spot. Through concepts discrimination and literatures search, the development history and assessment procedure in the US, and the methods and practices of cumulative risk assessment both at home and abroad were reviewed. It was pointed out that there were several problems in conducting cumulative risk assessment in China, such as lack of assessment methods, lack of basic scientific data and urgent need of reinforcement of macro-environmental management policy and so on. It was suggests that the concept and management requirements of cumulative environmental risk assessment should be defined, the evaluation process, framework and technical guide be formulated, and the construction of foundational databases and practical explorations be reinforced as soon as possible,which can provide the decision support for the long-term effective environmental management.

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    Cited: Baidu(2)
    Using Differential Optical Absorption Spectroscopy (DOAS) for Continuous Emission Monitoring and Process Gases
    SVANTE Wallin, HUANG Zhao-Kai, FAN Hai-Hua
    Journal of Environmental Engineering Technology    2011, 1 (1): 38-45.   doi: 10.3969/j.issn.1674-991X.2011.01.007
    Abstract5681)      PDF(pc) (1206KB)(1992)      
    The principle and system design of DOAS indicated the system could monitor multi-gas from UV wavelength to IR wavelength. After a series of test and identification from TüV, the DOAS system had proven to have a good performance on continuous emission monitoring in stationary pollution source and waste incineration, especially to monitor Hg, HCl, NH3 and HF. The DOAS system could monitor different concentrations of process gas with several paths using one analyzer and work well where was corrosive, high temperature and high level dust,which made it possible to monitor progress gases. The system also could monitor different concentrations of gases in different places. No extract sample system, faster response speed, multi-component and multi-path monitoring by one analyzer laid foundation for the DOAS a good competition on the market.
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    Cited: Baidu(3)
    Whole-Process Control Techniques and Practices for Toxic Organics in Industrial Wastewaters
    ZHOU Yue-Xi, SONG Yu-Dong, JIANG Jin-Yuan, XI Hong-Bo, LAI Bo
    Journal of Environmental Engineering Technology    2011, 1 (1): 7-14.   doi: 10.3969/j.issn.1674-991X.2011.01.002
    Abstract6294)      PDF(pc) (1187KB)(1963)      
    Reduction of toxic organics in industrial wastewater was one of the important links to build watershed quality target management system which considered human health and hydroecology safe as the water environmental targets. By learning from foreign experience and considering the actual situation of China, a whole-process technological strategy for toxic organic pollution control, based on the optimization of production and pollution control as an integrated system, was proposed against the disadvantages of traditional end-of-pipe solution. Analysis and characterization of organic pollutants in the wastewater were the base for the whole-process control. Improving of production process and management practice was used to reduce the amount of toxic organics discharged into wastewater. Then water-quality-based treatment processes were selected for wastewater streams with different characterization. Organic recovery and enhanced-degradation techniques were used for the pretreatment of wastewater. High-efficiency biological processes were used for biodegradation of toxic organics and the advanced treatment was used for further removal of toxic organics. For large-scale industrial complex, an optimization approach involving the inner-workshop, inter-workshop and between workshops and wastewater treatment plant, was proposed for resource conservation and high-efficient elimination of toxic organics. Establishment of technical systems and discharge standards for toxic organic elimination could promote the development and application of advanced technologies greatly.
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    Cited: Baidu(12)
    Analysis of Green Development, Circular Development, Low-carbon Development and Practices in Industrial Parks
    GUO Jing QIAO Qi SUN Qi-hong BAI Lu
    Journal of Environmental Engineering Technology    2015, 5 (6): 531-538.   doi: 10.3969/j.issn.1674-991X.2015.06.083
    Abstract1523)      PDF(pc) (1857KB)(1957)      

    In order to promote green development, circular development and low-carbon development in China, based on the analysis of their background, connotation, origin, realization approaches, and the research status of relevant evaluation indicators both at home and abroad, the promotion forms and practices of green development, circular development and low-carbon development in industrial parks were analyzed. In terms of the connotations, green development is a kind of development mode and can be realized through circular development and low-carbon development, which are cross-related each other. The analysis of connotations and evaluation index should provide systematic theoretical support for green development, circular development and low-carbon development in industrial parks. Finally, some strategic suggestions were put forward for green development, circular development and low-carbon development in industrial parks.

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    Pilot Scale Study on Plasma Vitrification of Municipal Waste Incinerator Fly Ash
    HUANG Wenyou MENG Yuedong CHEN Mingzhou LU Jie Lü Yonghong
    Journal of Environmental Engineering Technology    2016, 6 (5): 501-508.   doi: 10.3969/j.issn.1674-991X.2016.05.073
    Abstract1823)      PDF(pc) (2281KB)(1920)      

    The plasma vitrification is one method of detoxification and disposal of municipal waste incinerator (MSWI) fly ash. To obtain key data for engineering application, MSWI fly ash was melted with a pilot scale plasma furnace at the conditions of continuous feeding and discharging. The properties of slag, secondary fly ash and off-gas were analyzed, and the energy consumption calculated. According to the test, the densities of slag quenched by water and air are 3.01 and 2.90 g/cm3, respectively. The leaching test results of heavy metals from the two kinds of slags were all below the limits in Identification standards for hazardous wastes-Identification for extraction toxicity (GB 5085.3-2007). During the pilot scale test, about 280 kg fly ash was melted, and energy consumption of fly ash melting was 1.12 kW·h/kg. The production ratio of secondary fly ash was 7.1%, with NaCl and KCl as its major components.

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    Contaminants of Concern Screening Method in Establishing Screening Levels for Soil Risk Assessment of Contaminated Sites
    ZHOU You-ya YAN Zeng-guang ZHOU Guang-hui CAO Yun-zhe HOU Hong BAI Li-ping LI Fa-sheng
    Journal of Environmental Engineering Technology    2011, 1 (3): 264-269.   doi: 10.3969/j.issn.1674-991X.2011.03.044
    Abstract6171)      PDF(pc) (836KB)(1879)      
    With the rapid economic development and large-scale urbanization, contaminated sites resulted from dismissed enterprises have been a serious problem in China. The reuse of these contaminated sites may pose threat to human health and local ecosystem if without contamination investigation, risk assessment and remediation. The promulgation of a series of environmental assessment guidelines and standards, including those for site environmental assessment and soil screening levels, would greatly promote the management of contaminated sites. Soil pollution was a global environmental issue and many countries and regions had developed soil screening levels or cleanup objectives. The screening of contaminants of concern (COC) was the principal point of developing soil screening levels. The experience in screening COC during establishing screening levels for soil risk assessment of contaminated sites in Beijing was introduced, which could provide reference for other cities and regions in determining COC.
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    Cited: Baidu(6)
    Research on Methane Oxidation Capacity of Landfills Cover Materials and its Impact Factors
    YUE Bo, LIN Ye, WANG Qi, HUANG Ze-Chun, HUANG Qi-Fei, YANG Xue, ZHANG Wei
    Journal of Environmental Engineering Technology    2011, 1 (1): 57-62.   doi: 10.3969/j.issn.1674-991X.2011.01.010
    Abstract5140)      PDF(pc) (752KB)(1843)      
    Through indoor simulation experiments, the methane oxidation properties of typical landfill cover materials were compared, and the impacts of cultivation temperature, moisture content, and inoculation measures on the methane oxidation performance were further analyzed. The results showed that the order of methane oxidation capacity was: aged refuse > aged cover soil > compost > new cover soil. Methane oxidation rate of cover materials was dramatically affected by moisture content, the degree of which was related with the physical properties of tested materials, and the optimum moisture content was about 25%. Meanwhile, with temperature rising, methane oxidation rate of tested materials increased first and then decreased, and the best cultivation temperature was about 25 ℃. In addition, the methane oxidation rate increased significantly after the new cover soil was inoculated with aged refuse, and the inoculation proportion was recommended as 1:10 (aged refuse : new cover soil, m/m).
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    Study on Isolation and Identification of a Strain Heterotrophic chlorella and its Growth Characteristics
    LI Ao-bo WANG Ping ZHANG Zheng-jie JIU Wei-jing LI Jin-sui
    Journal of Environmental Engineering Technology    2011, 1 (2): 131-136.   doi: 10.3969/j.issn.1674-991X.2011.02.022
    Abstract4675)      PDF(pc) (759KB)(1841)      
    A heterotrophic WLZ-H strain growing fast was screened from natural waters. The cell morphology of the alga strain was analyzed with scanning electron microscope and, in combination with 16S rDNA molecular biology identification method, it was preliminarily conclude that the WLZ-H strain belonged to Chlorella sorokiniana.Single environmental factor test on the WLZ-H strain showed that the concentration of KNO3 and glucose had significant effects on WLZ-H strain growth; too high temperature would decrease enzyme activity of WLZ-H strain and consequently decrease its growth; pH would change with the growth of WLZ-H strain and reach the suitable value in different growth phase.The optimal growth conditions of WLZ-H strain were:initial pH 7.0, KNO3 content 1.5 g/L, glucose content 40 g/L, temperature 31 ℃.
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    Factors Analysis of Gas Lift Height from Cooling Tower
    DING Feng LI Shi-bei XING Ke-jia
    Journal of Environmental Engineering Technology    2011, 1 (2): 173-180.   doi: 10.3969/j.issn.1674–991X.2011.02.029
    Abstract5743)      PDF(pc) (815KB)(1835)      
    Based on the atmospheric dispersion model from VDI3784 guidelines of Germany, the influencing factors of plume rising height from Cooling Tower according to the meteorological and source emission parameters were analyzed. The results showed that compared to the wind speed, atmospheric stability had more important influence on the plume rising height. With the stability changing from strong unstabitily (A class) to strong stabitily (F class), the plume rising height gradually decreased, and the average range was 764 meters. With the wind speed changing from small calm wind (1 m/s) to the strong wind (20 m/s), the average plume rising height reduced 509 meters. The different source parameters’ effect on the maximum rising height was very small, and the rising height was likely to reach the maximum in certain weather conditions. But the effects of source emission parameters on the average rising height and minimum height were more obvious. The most influential parameters were temperature and gas flow rate, and the average range was 418 meters and 213 meters, respectively. But the variation effect of relative humidity and liquid water content in the flue gas on the average rising height was not significant.
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    Cited: Baidu(6)
    Technological Research and Innovation for Water Pollution Control and Water Environmental Restoration at Mid-Stream of Hunhe River
    SONG Yong-hui PENG Jian-feng ZENG Ping TIAN Zhi-yong GAO Hong-jie DUAN Liang XIANG Lian-cheng
    Journal of Environmental Engineering Technology    2011, 1 (4): 281-288.   doi: 10.3969/j.issn.1674-991X.2011.04.047
    Abstract4019)      PDF(pc) (1141KB)(1805)      
    Pharmaceutical and petrochemical wastewater pollution are the main industrial pollution of the mid-stream of the Hunhe River, the wastewaters are toxic and refractory, and the tributaries of the Hunhe River are heavily polluted. For water pollution control and water environment improvement, regional water pollution control and water environmental restoration were carried out with the support of National Major Science and Technology Program for Water Pollution Control and Governance. Against berberine wastewater and fosfomycin sodium wastewater, physicochemical processes of ozone oxidation, pulse electro-coagulation, Fe-C micro-electrolysis etc. was researched, and the pharmaceutical wastewater effectively treated. Against petrochemical acrylic wastewater, multi-compartment nitrogen removal reactor and whole process of membrane biological reactor (MBR) -ozone oxidation-biological aerated filter were researched, with which the ammonia was effectively removed and the wastewater discharge standards met. Ecological hybrid pond and wetland system, as well as the technology of safe treatment and resourceful utilization of the polluted river sediment, were studied to solve the problems of tributary pollution of mid-stream of the Hunhe River, which provided technical supports to the tributary water environmental restoration.
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    Cited: Baidu(6)
    Study on the Treatment of Wastewater Containing High-concentration Ammonia Nitrogen with Aerobic Denitrifying Bacteria
    JIU Wei-jing WANG Ping YUE Jian-wei
    Journal of Environmental Engineering Technology    2011, 1 (2): 111-117.   doi: 10.3969/j.issn.1674-991X.2011.02.019
    Abstract5907)      PDF(pc) (912KB)(1797)      
    The treatment of simulated wastewater containing high-concentration (up to 700 mg/L) ammonia nitrogen with heterotrophic nitrification-aerobic strains in Sequencing Batch Reactor (SBR) was studied. Four influencing factors of SBR including the temperature, dissolved oxygen concentration, pH and hydraulic retention time were studied and the optimal operating conditions obtained. The results indicated that the efficiency of simultaneous nitrification and denitrification by seeding sludge and dominant bacteria could be enhanced after cultured for forty-five operational cycles in SBR. Under the optimal conditions of temperature 23~25 ℃, dissolved oxygen concentration 2 mg/L, pH 6.8-8.0 and hydraulic retention time 78 h, when the chemical oxygen demand was 2 500 mg/L and the ammonia nitrogen was 700 mg/L in the influent, the chemical oxygen demand removal efficiency could reach 88%-93%, while the ammonia nitrogen and total nitrogen removal efficiency could achieve as high as 98%~99% and 86%-93% respectively.
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    Cited: Baidu(7)
    New Development of Environmental Engineering and Technical Innovation Based on Ecological Civilization Viewpoint
    MENG Wei, FU Ze-qiang
    Journal of Environmental Engineering Technology    2011, 1 (1): 1-6.   doi: 10.3969/j.issn.1674-991X.2011.01.001
    Abstract5627)      PDF(pc) (953KB)(1790)      
    The connotation of ecological civilization was dissected from the perspective of productive forces and production relations. The causes of eco-environmental problems were explored and the relationships among technology, economy and environment analyzed based on the evolution of human civilization. The significance of technological innovation and advancement in ecological civilization construction was discussed. The research shows that science and technology are important driving forces on human civilization evolution, but also the roots of the global and regional eco-environmental problems. The core of ecological civilization is the harmonious coexistence between human and nature. With the connotation in conformity with that of the Scientific Outlook of Development, ecological civilization in nature is the adjustment and reconstruction of the relationship between human and nature which is based on modern industrial civilization. It builds resources-saving and environmental-friendly production models and green consumption patterns in the scale of sustainable development of earth ecosystems and its goal is to achieve the harmony between environmental and economic development, and the integration between human and nature. The construction of ecological civilization depends on green technology revolution, and the environmental engineering and technical innovation are the important impetus on it. Finally, aiming at the environmental strategic demands and the increasingly deteriorative environmental problems in China, six basic principles and six key fields were proposed for the future development of environmental engineering and technical innovation.
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    Cited: Baidu(1)
    Study on the Process of Roasting Vulcanized Molybdenum to Produce Molybdenum Oxide with Pure Oxygen in the Obturation Dry Condition
    TIAN Gang DU Ji-jun ZHANG Fan LIU Yu SHI Ying-jie
    Journal of Environmental Engineering Technology    2011, 1 (2): 157-161.   doi: 10.3969/j.issn.1674-991X.2011.02.026
    Abstract5085)      PDF(pc) (561KB)(1788)      
    Molybdenum oxide is an important raw material for steel and chemical industry. The conventional molybdenum oxide producing processes include reverberatory furnace roasting technology, rotary kiln roasting technology, multiple hearth furnace roasting technology, fluidized-bed roasting technology. In these conventional processes, the product quality was low with high concentration of SO2 (up to 2%) which was hard to be utilized and disposed, and could result in serious environmental pollution. An effective technology of roasting vulcanized molybdenum to produce molybdenum oxide with pure oxygen in the obturation dry condition was introduced, which could reduce the environmental pollution of SO2 and improve the quality of reaction product. Pure oxygen and molybdenum sulfide were roasted in the obturation dry reactor, with heating temperature less than 650 ℃ in the bottom part, the gas pressure in the reactor less than 0.4 MPa, the oxidizing reaction time between 35 and 50 minutes, and with the highest gas temperature 255 ℃.The results showed that the content of MoO3 in reaction product reached 93%, higher than that of the reaction product with the common productive technology (80%-85%), and the concentration of SO2 in flue gas was above 50% (in weight), thus having great practical value for utilization. The experiment proved that the new technology was feasible for MoO3 and SO2 recovery.
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    Cited: Baidu(1)
    Evaluation and Management Methods for Toxicity Control of Industrial Wastewater
    HU Hong-Ying, WU Qian-Yuan, YANG Yang, WANG Hua-Tong
    Journal of Environmental Engineering Technology    2011, 1 (1): 46-51.   doi: 10.3969/j.issn.1674-991X.2011.01.008
    Abstract5794)      PDF(pc) (824KB)(1777)      
    Evaluation and control of toxic pollutants in industrial wastewater is an import issue in the filed of water environmental pollution control. Only measuring quantitative integrated indexes such as CODCr,BOD5 is not sufficient for evaluating the safety of wastewater. Industrial wastewater water quality indexes including routine water quality indexes, bio-toxicity indexes and chemical characteristic indexes were proposed. Bio-toxicity tests and their application in industrial wastewater evaluation were discussed. The necessity and importance to carry out wastewater safety management using integrated bio-toxicity method was pointed out. It is suggested that the application of Daphnia toxicity tests for industrial wastewater safety evaluation should be the top choice in China. In addition, the progress of wastewater bio-toxicity control criteria at home and abroad was summarized, and it was pointed out that the bio-toxicity control index and toxicity discharge criteria for industrial wastewater which was suitable for China should be established according to water environmental creature type, toxic characteristic of industrial wastewater pollutants and control technology level.
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    Cited: Baidu(23)
    Electrostatic Precipitator for Power Plants: Present Status and Prospects of New Technologies
    LI Kui-zhong MO Jian-song
    Journal of Environmental Engineering Technology    2013, 3 (3): 231-239.   doi: 10.3969/j.issn.1674-991X.2013.03.037
    Abstract3654)      PDF(pc) (1223KB)(1758)      
    With the implementation of the Emission Standard of Air Pollutants for Thermal Power Plants(GB 13223-2011), the industry of electrostatic precipitator (ESP) will face unprecedented pressure and challenge. The present status and application problems of the electrostatic precipitator were summarized, and the development and application of flue gas pretreatment technology, electrostatic precipitator optimization technology, high-frequency power supply technology, synergy technology and other new technologies were discussed in detail. Finally, the prospects of the electrostatic precipitator technology were forecasted, mainly on ontology-based innovation, new power supply development and synergistic removal of multiple pollutants.
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    Cited: Baidu(11)
    Current Status and Suggestions on Hazardous Waste Management in China
    WANG Qi HUANG Qi-fei YAN Da-hai LI Li
    Journal of Environmental Engineering Technology    2013, 3 (1): 1-5.   doi: 10.3969/j.issn.1674-991X.2013.01.001
    Abstract2954)      PDF(pc) (689KB)(1748)      
    The current status of hazardous waste generation, utilization and disposal, pollution prevention and control regulation system, and supervision and technical supporting system in China was analyzed and summarized. The problems of hazardous waste management in China were pointed out, and some relevant suggestions given. It suggested that China should strengthen the management of hazardous waste sources, improve the technical abilities of sound utilization and disposal of hazardous waste, push forward the management of hazardous waste from non-industrial sources, and strengthen the construction of hazardous waste supervision and technical supporting system.
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    Cited: Baidu(17)
    High-temperature Enhanced Electrochemical Treatment of Fosfomycin Sodium Pharmaceutical Wastewater
    XIAO Hong-kang XIAO Shu-hu SONG Yong-hui ZHANG Guo-fang ZENG Ping SHAO Hong LI Hui
    Journal of Environmental Engineering Technology    2011, 1 (2): 106-110.   doi: 10.3969/j.issn.1674-991X.2011.02.018
    Abstract5403)      PDF(pc) (581KB)(1722)      
    The effect of electrochemical treatment for fosfomycin sodium pharmaceutical wastewater using RuO2/Ti as anode was investigated. The influences of temperature, NaCl concentration, initial pH and electric current on the degradation of CODCr and organic phosphorus were studied in details. The results showed that under the conditions of reaction temperature 80 ℃, concentration of NaCl 0.2 mol/L, initial pH 3.42 and electric current 4.0 A, the concentration of CODCr and organic phosphorus could degrade from 12 086 and 1 375 mg/L to 4 278 and 502 mg/L, with the removal rates of CODCr and organic phosphorus being over 64.7% and 63.5%, respectively. The biodegradability of wastewater was improved significantly with the BOD5/CODCr ratio increasing from 0.19 to 0.34.
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    Cited: Baidu(6)
    Process Study of Molybdenite Roasting in Pure Oxygen Pressure Reactor
    DU Ji-jun TIAN Gang ZENG Ping LIU Yu SHI Ying-jie ZHANG Fan
    Journal of Environmental Engineering Technology    2011, 1 (2): 151-156.   doi: 10.3969/j.issn.1674-991X.2011.02.025
    Abstract4542)      PDF(pc) (667KB)(1706)      
    In an oxygen enriched pressure reactor, it was very important to present the molybdenite oxidation process using the curve about temperature and pressure. However, the measured temperature value could not reflect the gas temperature in reactor because of the influence of radiation and temperature rising. It was thus necessary to make a calibration to get the real gas temperature in reactor. An equation relating with environmental temperature, measured temperature and calibration temperature was set up based on the thermal equilibrium and general gas law. The parameters A and B were calculated through the empty reactor roasting experiment. As a result, the method of calibration temperature decided by the change of environmental temperature and the top measurement temperature of reactor was set up. The results showed that the equation fitted well with the real gas temperature. The relationship parameter R2 was 0.915 in empty reactor roasting experiment. The molybdenite roasting process in an oxygen enriched pressure reactor was analyzed by this calibration method. The oxygen temperature was found to decrease during molybdenite oxidation in an oxygen enriched pressure environment. The reaction started obviously when the pressure was 0.262~0.276 MPa and temperature was 456~481 K.
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    Life Cycle Assessment of Large-scale Piggery for Environmental Assessment
    ZHANG Ying XIA Xun-feng ZHOU Su-xia HE Zhuo-shi MENG Rui XI Bei-dou
    Journal of Environmental Engineering Technology    2012, 2 (5): 428-432.   doi: 10.3969/j.issn.1674-991X.2012.05.067
    Abstract3194)      PDF(pc) (624KB)(1705)      
    Life cycle assessment (LCA) methodology was used to establish inventory of energy consumption and pollutant emission and to assess life-cycle environmental impacts of large-scale piggery, and then the way could be found for lessen negative environmental impacts. Four impact categories were investigated, including energy depletion, eutrophication, global warming and acidification, with the impact indices of 8.38×10-3, 1.91×10-3, 9.80×10-3 and 2.01×10-2, respectively. The life cycle was divided into three stages, i.e. feed ingredients manufacture, swine rearing and wastes disposal, with the environmental impact complex index of 2.52×10-2, 1.23×10-2 and 2.71×10-3, respectively. The results showed that manufacture of feed ingredients had the largest environmental impact. Therefore, reducing nitrogenous fertilizer consumption and implementing energy-saving and cleaner production in the production of fertilizers were essential to control the life cycle environmental impacts of large-scale piggery.
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    Bacterial Diversity of the Combined Ozonation-ASBR/SBR Sludge Reduction with Simultaneous Nitrogen and Phosphorus
    ZHAO Lin-lin WANG Hai-yan YANG Hui-fen HE Zan ZHOU Yue-xi ZHANG Le PANG Zhao-hui
    Journal of Environmental Engineering Technology    2011, 1 (2): 123-130.   doi: 10.3969/j.issn.1674–991X.2011.02.021
    Abstract5664)      PDF(pc) (1018KB)(1699)      
    The bacterial diversity in the ASBR and SBR of the combined process, i.e. combined ozonation-ASBR/SBR sludge reduction with simultaneous nitrogen and phosphorus removal process was studied by molecular biological PCR-DGGE method before and after sludge reduction. The results indicated that the dominant bacterial communities in the ASBR were Firmicutes bacterium, β-proteobacterium, γ-proteobacterium and Bacteroidetes bacterium. The bacterial richness in SBR after sludge reduction was slightly increased compared with that before sludge reduction, but with high similarity (85%). The dominant bacteria diversity of SBR was not influenced significantly by the ozone dosage for sludge reduction. There were Firmicutes bacterium, Candidate division TM7, ammonia-oxidizing bacterium, Bacteroidetes bacterium, β-proteobacterium, Denitrifying bacterium, Pseudomonas sp and Nitrosococcus halophilus Nc4 in SBR both before and after sludge reduction. However, the number of Bacteroidetes bacterium, β-proteobacterium, Denitrifying bacterium and Nitrosococcus halophilus Nc4 in SBR after sludge reduction was slightly higher than that before sludge reduction.
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    Optimization the Parameters of UZBAF for Treatment of Rural Sewage
    LIU Jin NAN Guo-ying YANG Tian-xue
    Journal of Environmental Engineering Technology    2011, 1 (2): 118-122.   doi: 10.3969/j.issn.1674-991X.2011.02.020
    Abstract4786)      PDF(pc) (606KB)(1676)      
    The water pollution was increasingly serious recently in China, and the rural sewage pollution accounted for high proportion. The up-flow biological aerated filter (UZBAF) with inner diameter of 185 cm and with 54 L of built-in natural zeolite filter sand was used in the demonstration base for harmless treatment of rural sewage. The results showed that under the conditions of hydraulic loading 2 m3/h and residence time 1.0 h, when the gas-water ratio increased from 2∶1 to 4∶1, CODCr average removal rate increased from 75.2% to 83.4%, BOD5 removal rate increased by 5.9%; turbidity removal rate increased from 91.9% to 94.8%, NH4+-N average removal rate increased from 82.6% to 98.1%, NH4+-N average concentration of the effluent fell from 3.3 mg/L to 0.28 mg/L; the removal rate of TN, TP, alkalinity and conductivity was 56.2%, 26.7%, 27.5% and 10.8%, respectively; and the removal rate of bacteria and ascaris eggs was 99.9% and 100%, respectively. The effluent could reach the target of the first-grade discharge standard of Synthetical Draining Standard of Sewage (GB 8978-1996). It was concluded that under the conditions of hydraulic loading 2 m3/h and residence time 1.0 h, UZBAF devices could realize harmless treatment of rural sewage.
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    Cited: Baidu(1)
    Degradation of Acetophenone in Wastewater by Electro-Fenton Process
    DOU Lian-feng SONG Yu-dong ZHOU Yue-xi QIN Hong-ke LAN Mei XU Ji-xian
    Journal of Environmental Engineering Technology    2011, 1 (2): 101-105.   doi: 10.3969/j.issn.1674-991X.2011.02.017
    Abstract4882)      PDF(pc) (552KB)(1655)      
    Electro-Fenton process with activated carbon fiber as the cathode and Ti/SnO2-Sb2O3 as the anode was used in the treatment of acetophenone wastewater. Effects of Fe2+ concentration and electric current density on acetophenone degradation were investigated. It was indicated that the phenyl in acetophenone molecular could be destroyed by electro-Fenton process and chemical oxygen demand (CODCr) of the wastewater decreased significantly. Compared with traditional two-dimensional electrode process in which no Fe2+ was added, the pollutant removal efficiency and current efficiency by electro-Fenton process were both higher. Current density has significant influences on the pollutant removal. Higher current density raised pollutant removal efficiency while lowering current efficiency. Under the conditions of electric current density 10.0 mA/cm2, Fe2+ 0.1 mmol/L and initial pH 4.0, the removal efficiencies of CODCr and acetophenone at 180 min were 58.96% and above 90%, respectively.
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    Cited: Baidu(4)
    Performance Assessment of Sector-Integrate Eco-Industrial Parks
    QIAO Qi
    Journal of Environmental Engineering Technology    2011, 1 (1): 82-86.   doi: 10.3969/j.issn.1674-991X.2011.01.014
    Abstract5555)      PDF(pc) (686KB)(1655)      
    With the introduction of the development of industrial parks (IP) in China, it was pointed out that there were some problems and limitations for the IP’s improvement in the future. It should be the prior way for some IPs in China to carry out the construction of eco-industrial parks (EIP) in their new stages of development and in solving the problems of economical intensive land use and natural resources constraints. Based on the difference of sectoral types and organizational structures, the EIPs are classified into sector-integrate EIP, sector-specific EIP and Venous EIP. The construction status of EIPs in China as well as the situation of related standard development was introduced. Compared with the standard for the sector-integrate EIPs developed by the Ministry of Environmental Protection (MEP), the compliance status of individual indicators, including economic development, mass minimization and recycling and pollutant control ones, of the EIPs under construction was analyzed in 2006-2008. It is shown that despite the limit of development stage of the EIPs, the compliance rates of indicators of the sector-integrate EIPs in China develop in fluctuation and show a rising trend in general.
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    Operation Improvement of Ground Flare of Beijing Organic Plant of Dongfang Petro-Chemical Company
    ZHOU Wei-ning
    Journal of Environmental Engineering Technology    2012, 2 (2): 167-171.   doi: 10.3969/j.issn.1674-991X.2012.02.025
    Abstract3512)      PDF(pc) (709KB)(1645)      
    Flares can burn out waste gas from producing process. The ground flare uses new type burners, burning tower and a separating burning control system to get a good method to deal with waste gas. It has advantages of wide scale in dealing capability, burning efficiently, no smoke, no light pollution, no heat radiation and low noise. So, it is an environmental friendly process to deal with the gases. There were some problems in running of the ground flare, such as the burners unable to light each other, the gas pressure of water seal tank of torch being over its safe pressure, the blocking of torch gas pipes and water seal tank pipes, and the pilot burner unable to move properly. By the development of equipment and adjusting of running date, these problems were solved. The possibility of reducing the number of pilot burners to save nature gas was raised and the methods of promoting the reliability of the separating burning control system discussed.
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    Study on Emission Reduction Effect of Motor Vehicle Emission Standards in China
    JI Liang YUAN Ying LI Gang WU Xue-fang
    Journal of Environmental Engineering Technology    2011, 1 (3): 237-242.   doi: 10.3969/j.issn.1674-991X.2011.03.039
    Abstract4507)      PDF(pc) (764KB)(1639)      
    The rapid development of automotive industry and the extraordinary growth of the vehicle population had brought about serious pollution problems in China. Through timely introduction of stricter emission standards for motor vehicles, vehicle emissions has decreased remarkably in China. Since implementation of China I emission standards, the emissions from each new vehicle had been reduced by 57%-96%. This has resulted in the decrease of average emission factors for the overall in-use vehicles, the effective control of the total emissions from motor vehicles and the improvement of the air quality in cities. Through implementation of strict vehicle emission standards in continual phases, emissions shows a downward trend, and a positive outcome of the total emission reduction is achieved.
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    Cited: Baidu(7)
    Engineering Remediation Techniques and Its Application for Volatile Organic Compounds-contaminated Sites
    YANG Bin LI Hui-ying WU Bin DU Ping LI Fa-sheng
    Journal of Environmental Engineering Technology    2013, 3 (1): 78-84.   doi: 10.3969/j.issn.1674-991X.2013.01.014
    Abstract2960)      PDF(pc) (975KB)(1596)      
    It is a big challenge to remediate the left contaminated sites which caused by the relocation of so many factories and companies, especially for the volatile organic compounds (VOCs)-contaminated sites. The engineering remediation techniques (ERTs), being relatively mature, have been widely used in foreign contaminated sites. However, there are few cases in China. It is still a challenge for those who remediate the contaminated sites to select the best available techniques based on their own economic and social development levels. In order to promote the application of ERTs in the contaminated sites of China, the major types and the technical principles of ERTs for VOCs were reviewed, and the technologies contents, remediation periods and costs compared. The engineering applications and development trends of various ERTs for VOCs were discussed, combined with the applications in US superfund sites in nearly 30 years.
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    Cited: Baidu(9)
    Treatment Status and Pollution Control Suggestions for Membrane Concentrated Leachate in China
    AI Hengyu MENG Bangbang LI Na YU Zhebin HUANG Qifei TIAN Shulei
    Journal of Environmental Engineering Technology    2016, 6 (6): 553-558.   doi: 10.3969/j.issn.1674-991X.2016.06.080
    Abstract1400)      PDF(pc) (1160KB)(1593)      

    Membrane filtration concentrated leachate is the by-product during treating landfill leachate by membrane technology. Compared with landfill leachate, it contains a higher concentration of organic pollutants, inorganic salts and metal ions, with poor biodegradability, and can result in more serious secondary pollution if without proper disposal. The typical treatment processes of membrane concentrated leachate at home and broad were analyzed, and the treatment effects, existing problems and current situation of engineering application of different processes, such as recharge, advanced oxidation, evaporation and “pretreatment + advanced oxidation + advanced treatment”, were discussed. According to the actual investigations, the safe disposal of membrane concentrated leachate in China was still at an early stage. Meanwhile, engineering application technologies, like advanced oxidation, submerged combustion evaporation (SCE) and mechanical vapor recompression (MVC/MVR) were only at laboratory or pilot scale. In order to ensure the safe disposal of concentrated leachate effectively, it was recommended that the concentrated leachate productions need to be reduced from the source; the existing processing techniques of concentrated leachate need to be improved and perfected; the resource utilization technology of concentrated leachate need to be developed; the secondary pollutants of the treatment of concentrated leachate need to be treated properly.

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    Biological Metabolic Transformation of Polybrominated Diphenyl Ethers and Tetrabromobisphenol A
    SHEN Meng-nan GAO Shi-xiang
    Journal of Environmental Engineering Technology    2015, 5 (5): 418-423.   doi: 10.3969/j.issn.1674-991X.2015.05.066
    Abstract1463)      PDF(pc) (868KB)(1590)      

    The distributions and sources of PBDEs and TBBPA in organism were analyzed, and the research progresses of reduction and oxidation metabolism of PBDEs and TBBPA in organisms were reviewed. The metabolism, pathways, and key enzymes involved in the biotransformation of them both in vivo and in vitro were explored. Directions for further studies on the bioaccumulation and biotransformation of PBDEs and TBBPA were proposed.

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    Research on Decomposition of Carbon Dioxide by High Frequency Dielectric Barrier Discharge
    ZHANG Fan,WANG Hong-chang, SHI Ying-jie, WANG Hong-mei, JING Peng, REN Hong-yan
    Journal of Environmental Engineering Technology    2011, 1 (1): 33-37.   doi: 10.3969/j.issn.1674-991X.2011.01.006
    Abstract6779)      PDF(pc) (657KB)(1583)      
    The greenhouse effect as well as its induced global warming is one of important global environmental issues. To control greenhouse gas CO2, the decomposition of CO2 by high frequency dielectric barrier discharge was studied. The effect of applied voltage, frequency, cooling method and CO2 concentration on the decomposition characteristic of CO2 was investigated. The results showed that the decomposition of CO2 could be enhanced by increasing applied voltage or frequency within limits. Circulated water cooling or air cooling to reactor was helpful to decomposition of CO2 for controlling the secondary reaction. Although decreasing the CO2 concentration by mixing it with inert gases could increase the decomposition of CO2, the energy efficiency reduced.
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    Cited: Baidu(2)
    Synergetic Treatment of Landfill Leachate in the Photoelectrochemical Process with Activated Carbon Fiber as Cathode
    XIAO Shu-hu SONG Yong-hui XIAO Hong-kang ZHANG Guo-fang
    Journal of Environmental Engineering Technology    2011, 1 (4): 353-358.   doi: 10.3969/j.issn.1674-991X.2011.04.060
    Abstract3929)      PDF(pc) (805KB)(1561)      
    Photoelectrochemical treatment of landfill leachate with activated carbon fiber (ACF) cathode and RuO2/Ti anode was carried out. Firstly, the treatment efficiencies were compared among electro-oxidation, electro-oxidation/electro-Fenton and  photoelectrochemical processes. Then the effects of initial pH and current intensity were studied in details. Simultaneously, the variations of organic speciation and biodegradability were investigated. The results showed that the degradation efficiency and rate were by far higher than the sum of electro-oxidation and electro-oxidation/electro-Fenton, thus the hybrid photoelectrochemical process presented a good synergetic effect. The formations of hydroxyl and chlorine radicals, which were disassociated from H2O2 and active chlorine by UV and Fe2+, were proposed to be the main mechanism. Current density was the control factor and the degradation rate of TOC increased gradually with current density. Under the conditions of initial pH value of 2.0~5.1, current intensity of 15.0 mA/cm2, and Fe2+ addition of 1 mmol/L, the removals of TOC reached about 80% within 300 min and the first-order kinetic constants ranged between 6.1×10-3 ~ 6.6×10-3 min-1. UV-Vis and gel permeation chromatography (GPC) spectra showed that the biorefractory humic and fulvic substances could be transformed into small molecules or even be mineralized, which resulted in the increase of biodegradability and the BOD5/COD reached about 0.42.
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    Cited: Baidu(2)
    Effect of Spatial Distribution on Inflow Ability of Non-point Source Pollutants into the Lake
    WANG Ya-kong YE Chun ZHANG Da-lei LI Chun-hua
    Journal of Environmental Engineering Technology    2015, 5 (6): 478-484.   doi: 10.3969/j.issn.1674-991X.2015.06.075
    Abstract1416)      PDF(pc) (3225KB)(1557)      

    Based on understanding and analysis of the migration mechanism of non-point source pollutants, the method of combining watershed unit and river network analysis was used to explore the impact of spatial locations on the inflow ability of non-point source pollutants into the lake. The distance weight was used to represent the impact degree of the polluting sources in the watershed on the lake water environment. With Zhushan Bay as case study, a river network model was constructed by ArcGIS, which was used for watershed unit division and origination-destination (OD) cost matrix analysis. The distance weight of non-point source pollution in watershed was thus calculated, and then tested by pollution contribution coefficients. The results show that the inflow ability of the pollutants into the lake is affected by the polluting source’s location or the migration route distance of the pollutants. The distribution of the same distance weight unit conforms to watershed unit, and the inflow coefficients of TN and TP into the lake are positively associated with the distance weight.

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    Cited: Baidu(1)
    UV-assisted Electrochemical Treatment of Landfill Leachate in a Continuous Flow Reactor
    XIAO Shu-hu SONG Yong-hui WAN Dong-jin ZHAO Xu XIAO Hong-kang
    Journal of Environmental Engineering Technology    2011, 1 (2): 95-100.   doi: 10.3969/j.issn.1674-991X.2011.02.016
    Abstract5154)      PDF(pc) (757KB)(1547)      
    A magnified continuous-flow integrated reactor was developed and UV-assisted electrochemical (UAE) oxidation was adopted to treat leachate from a municipal sanitary landfill after biological process. The effects of hydraulic retention time and applied electric current density on the removal of CODCr and NH3-N were investigated, and UAE process and single electrochemical process compared to observe the synergetic effect. Based on analysis of UV-vis spectra (200~500 nm) and GC/MS, it was found that many small organic molecules such as organic carboxylic acids were generated in the process, which could be responsible for the improvement of biodegradability. The results showed that UAE process could treat landfill leachate effectively. Without pH adjustment and electrolyte addition, 74.3% of CODCr and 94.9% of NH3-N could be degraded in the UAE process at a retention time of 85 min and electric current density of 21.2 mA/cm2. Simultaneously, the BOD5/CODCr of leachate could reach at about 0.6, and its biodegradability increased by about 12 times.
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    Cited: Baidu(4)