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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
    Abstract5498)      PDF(pc) (1095KB)(2549)      
    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)
    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
    Abstract5724)      PDF(pc) (1468KB)(3708)      
    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(25)
    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
    Abstract5815)      PDF(pc) (824KB)(1823)      
    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)
    Distribution Characteristics and Contamination Assessment of Arsenic in Surface Sediments of Lake Chaohu, China
    YU Xiu-juan HUO Shou-liang ZAN Feng-yu ZHAO Guang-chao XI Bei-dou
    Journal of Environmental Engineering Technology    2012, 2 (2): 124-132.   doi: 10.3969/j.issn.1674-991X.2012.02.019
    Abstract3673)      PDF(pc) (1232KB)(916)      
    Different fractions of arsenic of surface sediments taken from Lake Chaohu were studied using BCR sequential extraction procedure, and the pollution level of Arsenic was evaluated. The results indicated that the total content of arsenic was higher than the background value obtained from the statistics of 663 sediment samples in 9 lakes in a regional eco-geochemical survey. The pollution mostly existed in the east and west part of the lake while lower content in the middle part. It was found that Arsenic was distributed mainly in residual fraction, being attributed to 68.64%-79.24% of total arsenic. The contents of soluble fraction, reducible fraction and oxidisable fraction were 1.18-2.82, 0.73-2.01 and 0.05-1.06 mg/kg, respectively. The relative average proportion of the three fractions was 3.83:2.90:1. The total content of arsenic was higher in the west part of the lake than that in the east part, while the oxidisable fraction of arsenic was higher in the east part of the lake. The contents of arsenic were closely related with the pollution loads of organic matter and nutrients of the drainage area, which indicated that the residual fraction of arsenic might be transformed to the soluble and reducible fractions. Furthermore, the pollution level of the sediments in Lake Chaohu was evaluated by Hak?nson’s index, Geoaccumulation index and Sediment quality guidelines. The results showed that arsenic pollution and its potential risk were lower. Therefore, it would not cause a serious threat to the surrounding environment and organisms in short term.
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    Cited: Baidu(22)
    Distribution, Sources and Risk Assessment of Polycyclic Aromatic Hydrocarbons in Sediments from Zhushan Bay Littoral Zone, Lake Taihu
    CHEN Ming-hua LI Chun-hua YE Chun XU Shi-hong
    Journal of Environmental Engineering Technology    2014, 4 (3): 199-204.   doi: 10.3969/j.issn.1674-991X.2014.03.033
    Abstract2099)      PDF(pc) (721KB)(747)      

    Surface sediment samples were collected from lakeside zone of Zhushan Bay, Lake Taihu, of which 10 samples were collected from the littoral zone and one sample was collected from the center of the lake. The concentrations of 16 US EPA-priority-controlled polycyclic aromatic hydrocarbons (PAHs) were analyzed by GC-MS. The results showed that PAHs content varied from 61.2 to 2 032.3 ng/g, and the mean value was 1 131.5 ng/g. The spectra of PAHs showed that 4 rings and 5-6 rings were predominant ones in littoral zone, accounting for 28.6% and 60.9%, respectively, while 2-3 rings PAHs were predominant in the center of the lake, accounting for 88.1%. The source of PAHs in littoral zone sediments was mainly attributed to high-temperature combustion of coal, oil and other fossil fuels, but that in center of the lake was mainly attributed to oil spill. No significant PAH ecological risk was found in littoral zone of Lake Taihu according to ecological risk assessment. However, some PAH concentrations exceeded the effects range low (ERL) in some sampling sites. Potential harmful effects on organisms might exist, and ecological risk should be prevented.

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    Cited: Baidu(22)
    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
    Abstract6322)      PDF(pc) (1187KB)(1999)      
    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(20)
    Application of High Frequency Power Supply for ESP in the Power Industry of China and Its Potential for Energy Saving and Emissions Reducing
    ZHU Fa-Hua, LI Hui, WANG Qiang
    Journal of Environmental Engineering Technology    2011, 1 (1): 26-32.   doi: 10.3969/j.issn.1674-991X.2011.01.005
    Abstract6063)      PDF(pc) (982KB)(1494)      
    The mechanism for energy saving and emissions reducing of High Frequency Power Supply for ESP was analyzed. Its research and application at home and abroad were introduced, and its advantages compared with traditional power supply were pointed out. As one case, the dust-collector retrofit of Unit 8 of Shanghai Waigaoqiao Power Plant was studies for investigating the energy saving and emissions reducing effect. During daily operation after the retrofit of applying High Frequency Power Supply for ESP, the dust emissions decreased by 59.5%, from 42 mg/m3 to 17 mg/m3, and the energy consumption decreased by 71.7%. According to this application case and the successful experience in coal-fired units of other power plants, the potential of energy saving and emissions reducing in the power industry of China was analyzed. On the base of related statistical data from the power industry in 2009, if all the ESP adopted the High Frequency Power Supply, the electricity consumption of the ESP would decrease by 3.15 billion kW·h, equal to saving 1.077 million tons equivalent coal, and the total dust, SO2, NOx, CO2 emissions would decrease by 1.2-2.1 million tons, 10.7 thousand tons, 6.462-9.693 thousand tons, 3.10 million tons ,respectively.
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    Cited: Baidu(19)
    The Control Requirements and Monitoring Methods for Mercury Emission in Coal-fired Power Plants
    LI Hui WANG Qiang ZHU Fa-hua
    Journal of Environmental Engineering Technology    2011, 1 (3): 226-231.   doi: 10.3969/j.issn.1674-991X.2011.03.037
    Abstract5039)      PDF(pc) (822KB)(1506)      
    The effect and harm of mercury to the environment and human health, as well as the mechanism of mercury generation and emission in coal-fired power plants, were introduced. The related policy and standards in China and in developed countries were compared, and the main monitoring methods for mercury in flue gas focused. The relatively mature monitoring methods included Ontario Hydro Method (OHM), 30A Method and 30B Method which were developed by US EPA. Combined with the monitoring experiences in China, it was suggested that the standard monitoring methods and equipments should be developed for mercury emission in coal-fired power plants by referring to the experience of developed countries, and the reduction targets and emission standards be formulated based on the emission monitoring data all over the country.
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    Cited: Baidu(19)
    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
    Abstract6091)      PDF(pc) (699KB)(2143)      
    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(19)
    Study on Current Status of Air Pollution Control for Coal-fired Power Plants in China
    ZHANG Jian-yu PAN Li YANG Fan LIU Jia
    Journal of Environmental Engineering Technology    2011, 1 (3): 185-196.   doi: 10.3969/j.issn.1674-991X.2011.03.031
    Abstract5016)      PDF(pc) (1383KB)(1227)      
    Power industry of China has made great achievements from 1978. By the end of 2010, the national installed power capacities and the electricity generation of China has reached 962.19 GW and 4.228 trillion kW·h respectively, ranking the second in the world since 1996. The air pollution of coal-fired power plants had been controlled significantly, and the emissions of major pollutants been controlled effectively, with the emission performance declining year by year. The emission performance of the dust emission, SO2 and NOx decreased to 1.0, 3.2 and 2.9 g/(kW·h) respectively in the end of 2009. The power industry took proactive responses toward climate change, and the cumulative emission reduction of CO2 of power industry was about 951 million tons from 2006 to 2009, compared to the 2005 level. Looking forward to the Twelfth Five-Year Plan period (2011-2015), the power industry should insist on the control roadmap of combining the source control and end-of-pipe treatment, and the key work on the regional joint prevention and the multi pollutant control to control the air pollutants; and insist on optimizing the power structure and enhancing the energy saving to deal with climate change.
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    Cited: Baidu(18)
    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
    Abstract2995)      PDF(pc) (689KB)(1831)      
    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(18)
    Analysis of the Variation Trend and Sources of Nitrogen and Phosphorus in Qinzhou Bay in the Last 30 Years
    XU Min HAN Bao-xin LONG Ying-xian
    Journal of Environmental Engineering Technology    2012, 2 (3): 253-258.   doi: 10.3969/j.issn.1674-991X.2012.03.039
    Abstract3022)      PDF(pc) (1516KB)(820)      
    Based on the monitoring data and historic information in Qinzhou Bay in the last thirty years, the variation trend of annual concentration and spatial distribution of DIN and DIP were analyzed. The correlation analysis and analysis of nutrient fluxes into the sea were applied to study the main sources of nutrient in Qinzhou Bay and the influencing factors of spatial distribution. The results displayed that the annual mean DIN concentration showed a wave of rising trend, the annual mean DIP concentration showed the down trend. Nitrate was the main component of DIN, with the proportion of 71%. The concentration of nutrients decreased from the inner bay to the baymouth. Land-source was the main source of inorganic nitrogen, and the nutrients carried by the river contributed more than 78% of the nutrients into the sea.
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    Cited: Baidu(16)
    Investigation on Pollution Situation and Countermeasures in Poyang Lake
    WANG Sheng-rui SHU Jian-min NI Zhao-kui FENG Ming-lei LIU Zhi-gang PANG Yan FANG Hong-ya
    Journal of Environmental Engineering Technology    2013, 3 (4): 342-349.   doi: 10.3969/j.issn.1674-991X.2013.04.054
    Abstract2520)      PDF(pc) (1615KB)(754)      
    Based on the water quality and human activity data in Poyang Lake in over twenty years, the evolution trend of water quality, the pollution characteristics and the severe situation were analyzed systematically, and the corresponding prevention and control measures proposed according to various pollution factors. The results show that the water quality of Poyang Lake is in the middle nutritional level with the trend of decreasing in recent years. In terms of spatial distribution of water quality, the pollution level in south area is more serious than that in north area, and in terms of the temporal distribution, the high water period is better than that in low water period. The serious water pollution, the huge population pressure and the construction of ecological and economic zones and water control projects yield great potential threats to the water quality in Poyang Lake. The key measures to solve the water pollution problem in Poyang Lake were proposed, such as optimizing the Three Gorges Reservoir and the regulating scheme in "Five Rivers" basin, adjusting the industrial structure and reducing the pollutant discharge, and establishing basin-specific environmental access thresholds and pollutant discharge standards.
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    Cited: Baidu(16)
    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
    Abstract4878)      PDF(pc) (643KB)(3432)      
    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)
    Analysis of Air Quality Over China and Suggestions on Air Quality Daily Report Improvement
    MENG Xiao-yan WANG Rui-bin DU Li LI Jian-jun XIE Shu-yan ZHENG Hao-hao
    Journal of Environmental Engineering Technology    2011, 1 (3): 249-254.   doi: 10.3969/j.issn.1674-991X.2011.03.041
    Abstract4034)      PDF(pc) (699KB)(1360)      
    Based on China's air quality condition analysis, it was shown that while the control of SO2 and PM10 had achieved positive progress, complex atmospheric pollution problems such as haze, photochemical pollution had been increased. The existing API system of air quality daily report had shown its limitations. Also, based on the data collected from the monitoring sites in the cities of Tianjin, Shanghai, Chongqing, Guangzhou and Ningbo, the impacts of adding different monitoring factors into the existing air quality daily report system on the fine days were evaluated using three estimation programs. It was thus proposed that monitoring factors such as O3 and PM2.5 should be added to the existing air quality daily report system.
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    Cited: Baidu(13)
    Evaluation on Implementation of China's Emission Standards
    SONG Guo-jun HAN Yun-lei HE Ya-qi WANG Chen
    Journal of Environmental Engineering Technology    2011, 1 (3): 275-280.   doi: 10.3969/j.issn.1674-991X.2011.03.046
    Abstract4182)      PDF(pc) (882KB)(1362)      
    Emission standards implementation was a process that the relevant government departments urged the dischargers to carry out emission standards to achieve the objectives of 'compliance emission'. The implementation of China’s emission standards had realized the status of initial compliance emission and promoted the environmental protection and technology advancement in some degree. However, it still had some problems, for instance, the emission monitoring schemes could not fully judge the dischargers’ reaching the status of 'continuous compliance emission'; indemnificatory of implementation means was not strong enough; implementation efficiency was low, evaluation and update mechanism were lack. It was recommended that corresponding emission monitoring schemes should be designed to achieve the status of 'continuous compliance emission', permit system be completed to guarantee effective implementation of emission standards, and the mechanisms of assessment and update of emission standards be established to promote the pollution control technology advancement timely and reasonably.
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    Cited: Baidu(11)
    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
    Abstract2975)      PDF(pc) (975KB)(1643)      
    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(11)
    Study on UV-Fenton Treatment of Concentrated Water from Nanofiltration of Bio-treated Landfill Leachate
    XU Su-shi WANG Cheng-wen WANG Di DU Song
    Journal of Environmental Engineering Technology    2013, 3 (1): 65-70.   doi: 10.3969/j.issn.1674-991X.2013.01.012
    Abstract3636)      PDF(pc) (763KB)(966)      
    The treatment effect of concentrated water from nanofiltration of bio-treated landfill leachate was investigated through UV-Fenton process, and different factors on TOC removal such as H2O2 dosage, ferrous salt dosage, pH, temperature and reaction time were also studied. The results showed that UV-Fenton process could effectively remove the organic pollutant components. The H2O2 and FeSO4•7H2O dosage had a significant effect on TOC removal. The removal rate increased from 53.3% to 69.8% with H2O2 dosage increasing from 1 665 mg/L to 13 320 mg/L, and increased from 57.4% to 71.7% with FeSO4•7H2O dosage increasing from 367 mg/L to 5 500 mg/L. UV-Fenton system had a buffer effect on pH variation, and removal rate had a minor change with initial pH ranging from 2.0 to 6.0. With the temperature increasing from 20 to 60 ℃, TOC removal rate decreased slowly. TOC removal rate had a sharp increase in first 30 min and increased slowly later and, after 2 h, TOC removal rate no longer increased basically.
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    Cited: Baidu(11)
    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
    Abstract3674)      PDF(pc) (1223KB)(1829)      
    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)
    Screening of Priority Organic Pollutants in Groundwater of China
    ZHU Fei-fei QIN Pu-feng ZHANG Juan YAN Zeng-guang HOU Hong LI Fa-sheng
    Journal of Environmental Engineering Technology    2013, 3 (5): 443-450.   doi: 10.3969/j.issn.1674-991X.2013.05.069
    Abstract2346)      PDF(pc) (1033KB)(901)      
    The priority organic pollutants in groundwater were screened based on foreign and domestic research experience to meet the demand of monitoring and assessment in groundwater pollution of China. Acute toxicity, reproductive toxicity, carcinogenicity, endocrine disrupting activity, persistence, bioaccumulation, migration and occurrence frequency of pollutants were selected as assessment indicators. Analytic Hierarchy Process combined with Weighted Mark Method was used in quantitative screening of priority organic pollutants in groundwater. Sixteen categories including 85 organic pollutants were tentatively selected on the priority pollutants list, which contains 16 kinds of halogenated hydrocarbons, 13 kinds of polycyclic aromatic hydrocarbons, 20 kinds of pesticides and herbicide, 7 kinds of phenols, six kinds of chlorinated benzene, 6 kinds of BTEX, three kinds of nitrobenzene, 3 kinds of esters, 2 kinds of aldehydes, 2 kinds of anilines, 2 kinds of nitrosamines and dichloroacetic acid, acrylonitrile, PCBs, MTBE and acrylamide. The screening focused on considering the organic substances that widely distributed in the environment with high concentration and harmfulness to the environment.
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    Cited: Baidu(11)
    Environmental Risk Classification and Management for Chemical Industry Parks
    GUO Li-juan YUAN Peng SONG Yong-hui WANG Li PENG Jian-feng XU Wei-ning
    Journal of Environmental Engineering Technology    2011, 1 (5): 403-408.   doi: 10.3969/j.issn.1674-991X.2011. 05.067
    Abstract4610)      PDF(pc) (813KB)(1364)      
    In view of the importance of building up the environmental risk management system for chemical industry parks (CIPs) and in reference to US EPA’s general guidance on risk management programs for chemical accident prevention, the basic framework of environmental risk management for CIPs was proposed. The idea of risk classification was applied to the management of CIPs, and the three-level risk management solutions put forward. The method was applied to identify risks of a chemical industry park in Henan Province, in which the enterprises were classified into three risk levels. The results showed that two enterprises were of first-level environmental risk sources, one of second level and four of third level out of the 19 facilities in the park. For the enterprise with high-level risk, environmental risk receptor investigation, public participation and preparation of emergency response plans should be strengthened besides the daily risk management, so as to control the serious environmental pollution incidents within their incubation periods, and effectively prevent environmental pollution accidents and reduce environmental hazards.
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    Cited: Baidu(10)
    Influence of Peat on the Field Bioremediation Efficiency of Aged Oily Sludge in Oil Field
    LU Gui-lan WANG Shi-jie GUO Guan-lin WANG Xiang ZHANG Yu ZHANG Chao LI Fa-sheng
    Journal of Environmental Engineering Technology    2011, 1 (5): 389-395.   doi: 10.3969/j.issn.1674-991X.2011.05.065
    Abstract3545)      PDF(pc) (1010KB)(1033)      
    Peat was used as biosubstrate and mixed with aged oily sludge in the ratio of 1∶1, and the field experiment was conducted to study the influence of peat on the bioremediation of aged oily sludge by landfarming. The results showed that after 26 months of field test, the bioremediation efficiency of aged oily sludge was significantly enhanced by adding peat, and the total petroleum hydrocarbons (TPH) of oily sludge was reduced by 38.9%. The physicochemical properties of oily sludge was obviously improved, the salinity and alkaline concentration decreased significantly with the pH being reduced from 8.7 to 6.9 and salinity from 20.3 g/kg to 7.3 g/kg, the content of organic matter increased by 17.3%, and the available nutrient elements of N, P, K increased significantly. Compared with natural attenuation, the enhanced bioremediation of aged oily sludge with peat could increase microbial quantity and biodiversity.
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    Cited: Baidu(9)
    Oxidative Degradation of Simulated Amantadine by the Fenton Processes and the Intermediates Analysis
    ZENG Ping SONG Yong-hui DRESELY Johanna HOFFMANN Erhard
    Journal of Environmental Engineering Technology    2011, 1 (6): 454-459.   doi: 10.3969/j.issn.1674-991X.2011.06.076
    Abstract3464)      PDF(pc) (646KB)(1033)      
    The oxidative degradation of amantadine by Fenton reagents was investigated to study the removal efficiency under different conditions to determine the optimum conditions. The results showed that when the amantadine at concentration of 500 mg/L was oxidized by Fenton reaction, the CODCr removal rate was around 30%-80% with good treatment effect. The ratio of BOD5 to CODCr increased from zero to around 0.1-0.4. The optimal conditions obtained were as follows: pH was 4-5, reaction time was 15 min, H2O2 was 3 000 mg/L and the mass ratio of H2O2 to Fe2+ was around 1.28. The intermediates analysis of amantadine oxidized by Fenton reagents showed that there was no amantadine detected in the reaction system after 5 min of reaction. After 30 min of reaction, almost all the intermediates were degraded completely.
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    Cited: Baidu(9)
    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
    Abstract4585)      PDF(pc) (832KB)(2682)      
    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(9)
    The Simulation of Acoustic Environment Impact in 1 000 kV Extra-high Voltage Substation
    LI Xue-liang XU Zhen ZHOU Ying WANG Fei ZHU Geng-fu ZHAO Gang
    Journal of Environmental Engineering Technology    2012, 2 (3): 264-270.   doi: 10.3969/j.issn.1674-991X.2012.03.041
    Abstract3062)      PDF(pc) (1823KB)(856)      
    The 1 000kV extra-high voltage electricity transmission and transformation project is one of most important projects in the services of interregional electricity supply. The extra-high voltage substation will obviously impact the outside acoustic environment by the running of transformers and reactors and other facilities. Therefore, it is necessary to take measures to reduce the noise impact on the outside acoustic environment in project design phase. Applying frequently-used techniques of acoustic insulation in large substations and converter stations, three schemes were programmed with Cadna/A to find out effects of noise reduction by the simulation of the acoustic environment outside and inside the substation. The results showed that in normal conditions, the distance of station boundary noise exceeding the standard limits would be over 200m, the project would cause nighttime noises of neighboring village to increase obviously, and the impacted neighboring area was more than 301 000 m2. If the reactors added the Box-in structure, the restricted land area exceeding the standard limit outside the substation would decrease by more than 75%. When both the transformers and reactors used the Box-in structure, the boundary noise of extra-high voltage substation could meet the standard, and the increment of nighttime noise in neighboring villages was less than 1 dB(A).
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    Research Progress on Screening of Environment Priority Pollutants
    PEI Shu-wei ZHOU Jun-li LIU Zheng-tao
    Journal of Environmental Engineering Technology    2013, 3 (4): 363-368.   doi: 10.3969/j.issn.1674-991X.2013.04.057
    Abstract2107)      PDF(pc) (836KB)(1337)      
    The principles, methods and determining of assessment parameters were emphatically described based on a review of previous priority pollutants screening programs both at home and abroad and, subsequently, several existing problems in the studies were pointed out. The findings revealed the list was not suitable for the present environment pollution status owing to the limitation of monitoring data, incomplete consideration of the factors and the lack of timely update. Therefore, future researches should be done corporately by the government, researchers, enterprises and the public, and it was suggested that ranking of priority pollutants should use the semi-determination scoring method based on the monitoring data.
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    Research on Hazardous Waste Exemption Management at Home and Abroad
    HUANG Qi-fei YANG Yu-fei YUE Bo YANG Zi-liang LIU Feng HE Jie YU Hong-jin
    Journal of Environmental Engineering Technology    2013, 3 (1): 18-21.   doi: 10.3969/j.issn.1674-991X.2013.01.004
    Abstract2971)      PDF(pc) (597KB)(1277)      
    Hazardous waste management is especially important for solid waste management, in which the hazardous waste exemption management system is an effective method to reduce environmental risk of hazardous waste. The hazardous waste exemption management systems at home and abroad were investigated. The results show that the hazardous waste exemption management system in the United States is relatively completed, in which hazardous wastes exemption management can be divided into five types, i.e. categories excluding, conditional exemption for small generating sources, exemption for the low environmental risk, exemption under mixed and derived conditions, and exemption for individual waste generating sources. In Europe, the hazardous waste exemption management is far behind the mature system like the United States both on the techniques and mechanisms. In China, the architecture of hazardous waste exemption management system has not been formed. It was suggested that lessons should be drawn from hazardous wastes exemption management experience in developed countries, so as to study the hazardous waste management theories and practices, and to establish the hazardous waste exemption management system in China.
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    Analysis on Development Trend of Desulfurization and Denitration Technologies for Coal-fired Flue Gas
    ZHU Jin-wei ZHANG Fan WANG Hong-chang WANG Fan SHU Yun
    Journal of Environmental Engineering Technology    2015, 5 (3): 200-204.   doi: 10.3969/j.issn.1674-991X.2015.03.031
    Abstract1355)      PDF(pc) (733KB)(1001)      

    New emission standards in various industries have been enacted to put forward higher requirements towards the desulfurization and denitration equipments. The characteristics and application prospects of the existing pollution control technologies were analyzed and summarized. It is found that the existing main desulfurization and denitration technologies have many defects, such as regional ecological environment damage, production of new solid wastes, and competition for ammonia resource with agriculture, which is not exactly fitted to the needs of China’s national conditions and pollution control requirements. Therefore, the integrated technology of desulfurization and denitration with commercialization of by-products should be the main development trend for coal-fired flue gas. The technology can manufacture sulfuric acid, nitrate and nitrogen fertilizer with SO2 and NOx in the flue gas, so as to make up for China’s shortage of sulfur resources and avoiding waste of ammonia resources, and to provide a useful supplement for the agricultural fertilizer industry.

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    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
    Abstract5954)      PDF(pc) (912KB)(1830)      
    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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    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
    Abstract4528)      PDF(pc) (764KB)(1685)      
    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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    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
    Abstract6206)      PDF(pc) (836KB)(1918)      
    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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    Deep Purification of Contaminated River Water with High-rate Algal and Aquatic Combined Pond
    SONG Yong-hui PENG Jian-feng GAO Hong-jie LIU Wen-jie LIU Gui-ping
    Journal of Environmental Engineering Technology    2011, 1 (4): 317-323.   doi: 10.3969/j.issn.1674-991X.04.053
    Abstract3831)      PDF(pc) (783KB)(891)      
    The effect of deep purification of a river in Shenyang with high-rate algal and aquatic combined pond was investigated by analyzing CODCr, NH4+-N, TP and DO, etc.. The results showed that when the concentrations of DO, CODCr, NH4+-N, TN and TP in contaminated river water were 0.89-1.65 mg/L, 70-100 mg/L, 1.6-2.9 mg/L, 2.3-4.5 mg/L and 0.6-1.2 mg/L, respectively under HRT of 4 d and water depth of 0.5 m, by using the combined ponds, the average concentrations of DO increased to 5.88 mg/L, and the average concentrations of CODCr, NH4+-N, PO43--P, TN and TP in the treated river water decreased to 35.40 mg/L, 0.66 mg/L, 0.17 mg/L, 1.51 mg/L and 0.16 mg/L, respectively, which reached the Grade V standard of Environmental Quality Standard for Surface Water. On the other hand, the aquatic pond had high efficiency to remove algae from the outlet of algal pond and the average removal rate was 94.5%. The descending order of the purification of CODCr, NH4+-N and PO43--P was first-order high-rate algal pond, second-order high-rate algal pond, and aquatic pond; furthermore, the high-rate algal pond played a major role.
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    Some Thinkings on Lake Management in China
    JIANG Qi XI Hai-yan JIAO Li-xin NI Zhao-kui
    Journal of Environmental Engineering Technology    2012, 2 (1): 44-50.   doi: 10.3969/j.issn.1674-991X.2012.01.008
    Abstract2985)      PDF(pc) (1155KB)(706)      
    Based on analyzing the current situation and main existing problems of lake management in China, two strategy changes for lake management were put forward, i.e. change from multiple departments' separate management to watershed integrated management and change from water quality management to lake-watershed ecosystem management. Meanwhile, five specific measures for constructing a new lake management system were described: 1) setting up the lake-watershed integrated management system led by one department; 2) setting up the policy and regulation system for lake-watershed ecosystem management; 3) setting up the planning system based on lake-watershed ecosystem management; 4) setting up the measurement, standard and evaluation system for lake basins ecosystem; 5) enhancing the guarantee system setup for lake basins ecosystem management.
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    Establishing Nutrient Criteria Reference Conditions Based on Model Retrieval for Lake Qionghai
    ZHANG Li-bing ZHANG Zhan-yu HUO Shou-liang ZHAO Yan-guo JIN Ju-liang
    Journal of Environmental Engineering Technology    2012, 2 (3): 193-199.   doi: 10.3969/j.issn.1674-991X.2012.03.029
    Abstract3418)      PDF(pc) (896KB)(802)      
    Establishing lake nutrient reference conditions scientifically and reasonably is one of essential technical foundations for nutrient criteria determination. A system dynamics-based method, combined with several mathematical models, was undertaken to simulate the nutrient sources, distribution and movement in Lake Qionghai, Sichuan Province. The evolution process of nutrient concentrations and eutrophication levels in the past decades under different hydrological conditions was modeled by a system retrieval method. The results showed that the system simulation model calibrated by experiments was capable of describing the historical changes of lake eutrophication. Accordingly, this new method identified the reference total phosphorus values of 0.008-0.015 mg/L, reference total nitrogen values of 0.286-0.323 mg/L, reference chlorophyll-a values of 2.140-4.211 μg/L, and reference Secci depth values of 1.862-2.731 m for Lake Qionghai.
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    Study on Hazardous Materials and Environmental Protection Parameters of Vehicle Gasoline and Diesel Fuels in China
    YUE Xin PANG Yuan MA Yao BAO Xiao-feng WANG Ming-yu HUANG Xian-jiang
    Journal of Environmental Engineering Technology    2012, 2 (4): 325-332.   doi: 10.3969/j.issn.1674-991X.2012.04.051
    Abstract3512)      PDF(pc) (1140KB)(816)      
    Hazardous material contents of vehicle gasoline and diesel are important fuel quality parameteres. Fuel quality is of great importance to vehicle emissions and air pollution, and in turn is directly linked to the effective implementation of China 4, China 5 and stricter vehicle emission control standards, as well as the emission reduction of all in-use vehicles. It is necessary to study hazardous material control parameters and work out the control approaches in order to carry out the joint prevention and effective control of air pollution and to mitigate air pollution in cities and city clusters. The background of hazardous material control parameteres formulation and the international fuel quality standards were introduced, and the proposals on environmental management of fuel quality presented.
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    Water Quality Assessment for Heavy Metals in Rural Groundwater Sources around Shizhuyuan Polymetallic Mine in Chenzhou, Hunan Province
    XU Bing-bing XU Qiu-jin LIANG Cun-zhen LI Li JIANG Li-jia
    Journal of Environmental Engineering Technology    2013, 3 (2): 113-118.   doi: 10.3969/j.issn.1674-991X.2013.02.019
    Abstract2794)      PDF(pc) (1066KB)(914)      
    Water quality assessment for heavy metals in rural groundwater sources around Shizhuyuan Polymetallic Mine in Chenzhou, Hunan province in wet and dry seasons was carried out by using Single-factor Assessment Method and Nemerow Index Methods. The results showed that Fe, Mn, Ba , Zn , Cu , As, Pb , Ni, Cr , Cd and Hg were ubiquitous in rural groundwater sources. Mn, Fe and As were the main heavy metal pollutants in rural groundwater sources around Shizhuyuan mine area, with the detection concentrations exceeding Sanitary Standard for Drinking Water (GB 5749-2006) by 14.72, 1.73 and 1.61 times, respectively. The rural groundwater quality was poorer in dry season than that in wet season. The water quality in poor, good and excellent status in dry season accounted for 5%, 10% and 85% of the total rural groundwater sources, respectively, while in wet season it accounted for 5%, 5% and 90%, respectively.
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    Making the River Steady, Protecting Water Quality and Improving Ecology: Eco-treatment Practice of Liaohe Conservation Area
    LI Zhongguo
    Journal of Environmental Engineering Technology    2013, 3 (6): 465-471.   doi: 10.3969/j.issn.1674-991X.2013.06.072
    Abstract1965)      PDF(pc) (3950KB)(1061)      

    Since the Liao River basin eliminated water quality worse than class V for COD in the mainstream in 2009, the water pollution control has acquired breakthrough progress. Currently, in accordance with the five main indicators of surface water (COD, NH3-N, BOD5, DO, pH) detection, the water quality has reached class IV and been relatively stable, the fish has been restored to 40 kinds, and the river marked fish, saury, has been reproduced. Liaoning Provincial Government designated the mainstream of Liaohe as conservation area and established a conservation bureau. This is the first administration to be set up in China carrying out integrated basin management. This has provided institutional guarantees for implementation of multi-objective integration to protect the mother river of Liaoning people. The eco-treatment technology and practice of Liaohe Conservation Area were introduced. It has great significance on implementing the state strategy of “construction of ecological civilization”, accomplishing coordinated growth between economy and environment, and realizing harmony between people and nature.

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    Bioaccessibility and Human Health Risk Assessment of Heavy Metals in Soils of Antimony Mine Area
    LI Ji-ning WEI Yuan ZHAO Long SHANGGGUAN Yu-xian CHEN Zhi-peng LI Fa-sheng HOU Hong
    Journal of Environmental Engineering Technology    2014, 4 (5): 412-420.   doi: 10.3969/j.issn.1674-991X.2014.05.066
    Abstract2177)      PDF(pc) (1043KB)(1067)      

    The total contents and pollution status of heavy metals (Fe, Mn, Cu, Zn, Pb, Cd, As and Sb) were investigated in 29 soil samples collected from antimony mine area in Xikuangshan, Lengshuijiang City, Hunan Province. The simple bioaccessibility extraction test (SBET) was used to evaluate the bioaccessibility of heavy metals in soils. In addition, the human health risk assessment of the oral ingestion soil for adults was carried out based on the human health risk model. The results showed that As and Sb are the main pollution elements in the soils, and they have high homology and are easily affected by human activities. Bioaccessibility of soil heavy metals covered a wide range, the rate of bioaccessibility of heavy metals decreased in the order of Mn(36.7%) > Cd(30.7%) > Pb(24.4%)>Zn(23.1%) > Cu(12.0%) > As(5.89%) > Fe(3.88%) > Sb(2.13%), indicating that most of the heavy metals through oral ingestion could not be adsorbed by human body. The results based on total metal contents might overestimate the actual human health risks. After adjustment by bioaccessibility, the health risk values were greatly reduced, the average hazard index (HI) and total carcinogenic risk (TCR) values were reduced by 97% and 92%, respectively. Sb and As are two predominant contributors to human health risks. In addition, the hazard index values of some samples in tailing dam area were still higher than the risk threshold value after adjustment by bioaccessibility and deserved special attention.

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    Research Progress in the Toxicology of Silver Nanoparticles
    DENG Fu-rong WEI Hong-ying GUO Xin-biao
    Journal of Environmental Engineering Technology    2011, 1 (5): 420-424.   doi: 10.3969/j.issn.1674-991X.2011. 05.070
    Abstract4222)      PDF(pc) (730KB)(1552)      
    Due to its antibacterial properties, Silver nanoparticles has been widely used in various fields, such as environment, agriculture and medicals, etc. Previous studies had investigated the health effects and action mechanism of silver nanoparticles in vivo and in vitro studies. However, due to the limitation of study design or research conditions, the previous research results were still insufficient and the health effects and action mechanism of silver nanoparticles still unclear. The research progress in toxicology of silver nanoparticles in recent years was reviewed, and the lack of current research as well as future research prospects discussed.
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    Design of the Pollutant Emission Standard System of China in Context of Circular Economy
    SONG Guo-jun HAN Yun-lei WANG Chen LI Yan-xia
    Journal of Environmental Engineering Technology    2011, 1 (3): 215-220.   doi: 10.3969/j.issn.1674-991X.2011.03.035
    Abstract4385)      PDF(pc) (914KB)(1047)      
    Based on the principle of circular economy and marginal cost emission control, a framework of pollutant emission standard system including the control cost, extent and speed elements was brought forward. The system covered the whole pollutant life cycle and was composed of four parts, i.e. environmental protection technical policy for raw materials, environmental protection technical policy for production, end-of-pipe treatment policy and emission standards, and technical policy for waste disposal. The individual control extents of the four sub-policies depended on marginal control costs, with preferential implementation for lower cost control links. The emission standards would be graded based on the technical advanced degrees, which could promote continuous improvement for environmental technology and provide correct predications to the society. By establishment of the standard development and updating mechanism, the emission standard system could identify automatically the priorities of implementation fields and thus be optimized and adjusted by itself at an appropriate speed.
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