Analyses on pollutants removal in municipal wastewater reclamation plant with multistage A/O process
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摘要: 北京市某城市污水厂在传统的A 2/O工艺基础上特别增设多级A/O(MAO)工艺强化脱氮除磷效果。以该污水厂各工艺单元出水为研究对象,通过对水质常规理化指标、紫外吸收光谱及其相关参数分析,并结合多元数据统计学手段,分析该工艺对城市污水中污染物的去除效果,特别是溶解性有机物(DOM)的去除。经MAO工艺强化后CODCr、DOC、TN、TP和N$H^{+}_{4}$-N的去除率分别为95.14%、89.70%、94.53%、97.26%和99.74%,达到GB 18918—2002《城镇污水处理厂污染物排放标准》一级A标准;增设MAO工艺后,提高了对DOM的去除率,DOM分子量和团聚化程度显著提高,化合物的稳定性增强。对污水再生过程处理单元水质化学指标与紫外光谱参数的相关性分析表明,芳香环上取代基类型以脂肪链为主时对脱氮除磷促进作用更加明显。
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关键词:
- 多级A/O(MAO)工艺 /
- 脱氮除磷 /
- 城市生活污水 /
- 再生 /
- 溶解性有机物(DOM) /
- 低碳源
Abstract: A municipal wastewater treatment plant(MWWTP) in Beijing City based on the traditional A 2/O process was added with multi-stage A/O(MAO) to enhance the nitrogen and phosphorus removal effect. The effluent from different units of the MWWTP was studied, and the removal effects of the pollutants in the wastewater especially for dissolved organic matter(DOM) by the enhanced process were analyzed, by analyzing the basic water quality indicators, ultraviolet absorption spectrum and related parameters, and combined with multi-variate statistic analysis. After treatment of the MAO-enhanced process, the average removal rate of chemical oxygen demand, dissolved organic carbon, total nitrogen, total phosphorus, ammonia nitrogen were 95.14%, 89.70%, 94.53%, 97.26%% and 99.74%, respectively, which met first class A of Urban Sewage Treatment Plant Pollutant Discharge Standards(GB 18918-2002). With the addition of multi-stage A/O units, the removal rate of DOM was increased. At the same time, the molecular weight of DOM and the degree of agglomeration increased significantly; the stability of the compounds increased. The correlation analysis of water quality index and ultraviolet fluorescence spectrum shows that the removal of nitrogen and phosphorus is more obvious when the type of substituent is mainly aliphatic chain in the aromatic ring. -
[1] CHANG J, LEE W, YOON S . Energy consumptions and associated greenhouse gas emissions in operation phases of urban water reuse systems in Korea[J]. Journal of Cleaner Production, 2016,141:728-736.
doi: 10.1016/j.jclepro.2016.09.131[2] LEVINE A D, ASANO T . Recovering sustainable water from wastewater[J]. Environmental Science & Technology, 2004,38(11):201A-208A.
doi: 10.1021/es040504n pmid: 15224722[3] MENESES M, PASQUALINO J C, CASTELLS F . Environmental assessment of urban wastewater reuse:treatment alternatives and applications[J]. Chemosphere, 2010,81(2):266-272.
doi: 10.1016/j.chemosphere.2010.05.053 pmid: 20580058[4] RICE J, WESTERHOFF P . Spatial and temporal variation in de facto wastewater reuse in drinking water systems across the USA[J]. Environmental Science & Technology, 2015,49(2):982-989.
doi: 10.1021/es5048057 pmid: 25544250[5] MICHAEL-KORDATOU I, MICHAEL C, DUAN X , et al. Dissolved effluent organic matter:characteristics and potential implications in wastewater treatment and reuse applications[J]. Water Research, 2015,77:213-248.
doi: 10.1016/j.watres.2015.03.011 pmid: 25917290[6] TAO J, SKYLLBERG U, BJÖRN E ,et al. Characteristics of dissolved organic matter(DOM) and relationship with dissolved mercury in Xiaoqing River-Laizhou Bay estuary,Bohai Sea,China[J]. Environmental Pollution, 2017,223:19-30.
doi: 10.1016/j.envpol.2016.12.006 pmid: 28131480[7] STEDMON C A, BRO R . Characterizing dissolved organic matter fluorescence with parallel factor analysis:a tutorial[J]. Limnology & Oceanography Methods, 2008,6(11):572-579.
doi: 10.4319/lom.2008.6.572[8] 孙迎雪, 吴光学, 胡洪营 , 等. 基于达标保证率的昆明市污水处理厂出水水质评价[J]. 中国环境科学, 2013,33(6):1113-1119.
doi: 10.3969/j.issn.1000-6923.2013.06.021SUN Y X, WU G X, HU H Y , et al. Assessment of effluent quality of wastewater treatment plant in Kunming based on the percentile of standard compliance method[J]. China Environmental Science, 2013,33(6):1113-1119. doi: 10.3969/j.issn.1000-6923.2013.06.021[9] 王伟, 彭永臻, 孙亚男 , 等. 分段进水A/O工艺流量分配方法与策略研究[J]. 环境工程学报, 2009,3(1):89-92.WANG W, PENG Y Z, SUN Y N , et al. Study of influent flow distribution methods and strategies in step-feed A/O process[J]. Chinese Journal Environmental Engineering, 2009,3(1):89-92. [10] 尹子华, 盛晓琳, 刘锐 , 等. 多级A/O工艺强化处理城市污水的效果研究[J]. 环境科学, 2016,37(9):3460-3465.YIN Z H, SHENG X L, LIU R , et al. Enhanced pollutants removal in a municipal wastewater treatment plant with multistage A/O process[J]. Environmental Science, 2016,37(9):3460-3465. [11] SANCHEZ N P, SKERIOTIS A T, MILLER C M . A PARAFAC-based long-term assessment of DOM in a multi-coagulant drinking water treatment scheme[J]. Environmental Science & Technology, 2014,48(3):1582-1591.
doi: 10.1021/es4049384 pmid: 24417368[12] OSBURN C L, HANDSEL L T, MIKAN M P , et al. Fluorescence tracking of dissolved and particulate organic matter quality in a river-dominated estuary[J]. Environmental Science & Technology, 2012,46(16):8628-8636.
doi: 10.1021/es3007723 pmid: 22803700[13] LEYVA-DÍAZ J C, MUÑÍO M M, GONZÁLEZ-LÓPEZ J , et al. Anaerobic/anoxic/oxic configuration in hybrid moving bed biofilm reactor-membrane bioreactor for nutrient removal from municipal wastewater[J]. Ecological Engineering, 2016,3(6):449-458.
doi: 10.1016/j.ecoleng.2016.03.006[14] 侯迪波, 张坚, 陈泠 , 等. 基于紫外-可见光光谱的水质分析方法研究进展与应用[J]. 光谱学与光谱分析, 2013,33(7):1839-1844.HOU D B, ZHANG J, CHEN L , et al. Water quality analysis by UV-VIS spectroscopy: a review of methodology and application[J]. Spectroscopy and Spectral Analysis, 2013,33(7):1839-1844. [15] MARKECHOVA D, TOMKOVA M, SADECKA J . Fluorescence excitation-emission matrix spectroscopy and parallel factor analysis in drinking water treatment:a review[J]. Polish Journal of Environmental Studies, 2013,22(5):1289-1295. [16] BRIDGEMAN J, BIEROZA M, BAKER A . The application of fluorescence spectroscopy to organic matter characterisation in drinking water treatment[J]. Reviews in Environmental Science and Bio/Technology, 2011,10(3):277-290.
doi: 10.1007/s11157-011-9243-x[17] SGROI M, ROCCARO P, KORSHIN G V , et al. Use of fluorescence EEM to monitor the removal of emerging contaminants in full scale wastewater treatment plants[J]. Journal of Hazardous Materials, 2016,323(5):367-376.
doi: 10.1016/j.jhazmat.2016.05.035 pmid: 27233208[18] 吕清 . 连续流动分析-分光光度法测定水和废水中总氮[J]. 环境监测管理与技术, 2014(1):42-45.
doi: 10.3969/j.issn.1006-2009.2014.01.014LÜ Q . Determination of total nitrogen in water and wastewater by continuous flow analysis and spectrophotometric method[J]. The Administration and Technique of Environmental Monitoring, 2014(1):42-45. doi: 10.3969/j.issn.1006-2009.2014.01.014[19] 申颖洁, 廖日红, 战楠 , 等. 生物强化组合工艺处理河水的三维荧光及生物多样性分析[J]. 环境工程学报, 2013,7(1):125-131.SHEN Y J, LIAO R H, ZHAN N , et al. Excitation-emission matrix fluorescence spectra and microbial diversity analysis of river water in biological enhanced integrated process[J]. Chinese Journal of Environmental Engineering, 2013,7(1):125-131. [20] 申洋洋, 刘锐, 徐灿灿 , 等. 印染及染料行业废水生物处理系统中的AOX污染研究[J]. 环境科学, 2015,36(9):3304-3310.SHEN Y Y, LIU R, XU C C , et al. AOX pollution in wastewater treatment process of dyeing and dyestuff chemical industries[J]. Environmental Science, 2015,36(9):3304-3310. [21] ZHANG L Y, YE Y B, WANG L J , et al. Nitrogen removal processes in deep subsurface wastewater infiltration systems[J]. Ecological Engineering, 2015,77(23):275-283.
doi: 10.1016/j.ecoleng.2015.01.008[22] WU L N, LIANG D W, XU Y Y , et al. A robust and cost-effective integrated process for nitrogen and bio-refractory organics removal from landfill leachate via short-cut nitrification,anaerobic ammonium oxidation in tandem with electrochemical oxidation[J]. Bioresource Technology, 2016,212:296-301.
doi: 10.1016/j.biortech.2016.04.041 pmid: 27115616[23] ZHANG Z Y, LEI Z F, ZHANG Z Y , et al. Relationship between variation of nitrite-nitrogen concentration and removal efficiency for soil aquifer treatment process[J]. Journal of Fudan University, 2006,45(6):755-761. [24] WU L, ZHANG L, XU Y , et al. Advanced nitrogen removal using bio-refractory organics as carbon source for biological treatment of landfill leachate[J]. Separation & Purification Technology, 2016,170:306-313.
doi: 10.1016/j.seppur.2016.06.033[25] AKIZUKI S, TENG K W, AOKI Y , et al. Effects of substrate COD/N$O^{-}_{2}$-N ratio on simultaneous methanogenesis and short-cut denitrification in the treatment of blue mussel using acclimated sludge [J]. Biochemical Engineering Journal, 2015,99:16-23.
doi: 10.1016/j.bej.2015.01.009[26] HONG J M, HU M M, SUN R , et al. Unraveling characteristics of nutrient removal and microbial community in a novel aerated landscape-activated sludge ecological system[J]. Bioresource Technology, 2016,212:280-288.
doi: 10.1016/j.biortech.2016.04.042 pmid: 27111873[27] CHEN Y, PENG C, WANG J , et al. Effect of nitrate recycling ratio on simultaneous biological nutrient removal in a novel anaerobic/anoxic/oxic(A 2/O)-biological aerated filter(BAF) system [J]. Bioresource Technology, 2011,102(10):5722-5727.
doi: 10.1016/j.biortech.2011.02.114 pmid: 21459571[28] 李捷, 熊必永, 张杰 . 电子受体对厌氧/好氧反应器聚磷菌吸磷的影响[J]. 哈尔滨工业大学学报, 2005,37(5):619-622.LI J, XIONG B Y, ZHANG J . Effects of different types of electron acceptors on phosphate uptake in anaerobic-aerobic process[J]. Journal of Harbin Institute of Technology, 2005,37(5):619-622. [29] 苏婉琳, 韩萍芳 . 传统厌氧/好氧生物除磷与厌氧/缺氧反硝化除磷效能的比较[J]. 生物加工过程, 2011,9(6):49-53.SU W L, HAN P F . Comparison between traditional biological phosphorus removal by anaerobic/aerobic and denitrifying phosphorus removal by anaerobic/aerobic[J]. Chinese Journal of Bioprocess Engineering, 2011,9(6):49-53. [30] 余鸿婷, 李敏 . 反硝化聚磷菌的脱氮除磷机制及其在废水处理中的应用[J]. 微生物学报, 2015,55(3):264-272.
doi: 10.13343/j.cnki.wsxb.20140329YU H T, LI M . Denitrifying and phosphorus accumulating mechanisms of denitrifying phosphorus accumulating organisms (DPAOs) for wastewater treatment:a review[J]. Acta Microbiologica Sinica, 2015,55(3):264-272. doi: 10.13343/j.cnki.wsxb.20140329[31] HAN Y, ZHANG W, LU W , et al. Co-immobilization of Pseudomonas stutzeri YHA-13 and Alcaligenes sp.ZGED-12 with polyvinyl alcohol-alginate for removal of nitrogen and phosphorus from synthetic wastewater[J]. Environmental Technology, 2014,35(22):2813-2820.
doi: 10.1080/09593330.2014.923516[32] 吕冬梅, 彭永臻, 赵伟华 , 等. A 2O-BAF工艺反硝化聚磷效果的影响因素 [J]. 中国环境科学, 2015,35(11):3266-3274.LÜ D M, PENG Y Z, ZHAO W H , et al. Factors influencing the denitrifying phosphorus removal efficiency of A 2O-BAF process [J]. China Environmental Science, 2015,35(11):3266-3274. [33] HU Z R, WENTZEL M C, EKAMA G A . Anoxic growth of phosphate-accumulating organisms(PAOs) in biological nutrient removal activated sludge systems[J]. Water Research, 2002,36(19):4927-4937.
doi: 10.1016/S0043-1354(02)00186-0 pmid: 12448537[34] DIGNAC M F, GINESTET P, RYBACKI D , et al. Fate of wastewater organic pollution during activated sludge treatment:nature of residual organic matter[J]. Water Research, 2000,34(17):4185-4194.
doi: 10.1016/S0043-1354(00)00195-0[35] SUN F, SUN B, HU J , et al. Organics and nitrogen removal from textile auxiliaries wastewater with A2O-MBR in a pilot-scale[J]. Journal of Hazardous Materials, 2015,286:416-424.
doi: 10.1016/j.jhazmat.2015.01.031 pmid: 25603291[36] GE S, PENG Y, WANG S , et al. Enhanced nutrient removal in a modified step feed process treating municipal wastewater with different inflow distribution ratios and nutrient ratios[J]. Bioresource Technology, 2010,101(23):9012-9019.
doi: 10.1016/j.biortech.2010.06.151 pmid: 20650632[37] ZHANG M, PENG Y, WANG C , et al. Optimization denitrifying phosphorus removal at different hydraulic retention times in a novel anaerobic anoxic oxic-biological contact oxidation process[J]. Biochemical Engineering Journal, 2015,106:26-36.
doi: 10.1016/j.bej.2015.10.027[38] ESSANDOH H M, TIZAOUI C, MOHAMED M H , et al. Soil aquifer treatment of artificial wastewater under saturated conditions[J]. Water Research, 2011,45(14):4211-4226.
doi: 10.1016/j.watres.2011.05.017 pmid: 21700308[39] MANNINA G, CAPODICI M, COSENZA A , et al. Carbon and nutrient biological removal in a University of Cape Town membrane bioreactor:analysis of a pilot plant operated under two different C/N ratios[J]. Chemical Engineering Journal, 2016,296:289-299.
doi: 10.1016/j.cej.2016.03.114[40] ZANETTI F, DE LUCA G, SACCHETTI R . Performance of a full-scale membrane bioreactor system in treating municipal wastewater for reuse purposes[J]. Bioresource Technology, 2010,101(10):3768-3771.
doi: 10.1016/j.biortech.2009.12.091 pmid: 20093005[41] FALAHTI-MARVAST H, KARIMI-JASHNI A . Performance of simultaneous organic and nutrient removal in a pilot scale anaerobic-anoxic-oxic membrane bioreactor system treating municipal wastewater with a high nutrient mass ratio[J]. International Biodeterioration & Biodegradation, 2015,104:363-370. [42] 李璐璐, 江韬, 闫金龙 , 等. 三峡库区典型消落带土壤及沉积物中溶解性有机质(DOM)的紫外-可见光谱特征[J]. 环境科学, 2014,35(3):933-941.LI L L, JIANG T, YAN J L , et al. Ultraviolet-visible (UV-Vis) spectral characteristics of dissolved organic matter (DOM) in soils and sediments of typical water-level fluctuation zones of Three Gorges Reservoir Areas[J]. Environmental Science, 2014,35(3):933-941. [43] TEHRANI N C, D’SA E J, OSBURN C L ,et al. Chromophoric dissolved organic matter and dissolved organic? carbon from sea-viewing wide field-of-view sensor(SeaWiFS),moderate resolution imaging spectroradiometer(MODIS) and MERIS sensors:case study for the Northern Gulf of Mexico[J]. Remote Sensing, 2013,5(3):1439-1464.
doi: 10.3390/rs5031439[44] ZHU G, YIN J, ZHANG P , et al. DOM removal by flocculation process:Fluorescence excitation-emission matrix spectroscopy(EEMs) characterization[J]. Desalination, 2014,346:38-45.
doi: 10.1016/j.desal.2014.04.031[45] YANG X, ZHOU Z, RAJU M N , et al. Selective elimination of chromophoric and fluorescent dissolved organic matter in a full-scale municipal wastewater treatment plant[J]. Journal of Environmental Sciences, 2016,11(3):1-12. [46] WANG L, WU F, ZHANG R , et al. Characterization of dissolved organic matter fractions from Lake Hongfeng,Southwestern China Plateau[J]. Journal of Environmental Sciences, 2009,21(5):581-588.
doi: 10.1016/S1001-0742(08)62311-6 pmid: 20108658[47] WANG F L, BETTANY J R . Influence of freeze-thaw and flooding on the loss of soluble organic carbon and carbon dioxide from soil[J]. Journal of Environmental Quality, 1993,22(4):709-714.
doi: 10.2134/jeq1993.00472425002200040011x[48] 张甲珅, 曹军, 陶澍 . 土壤水溶性有机物的紫外光谱特征及地域分异[J]. 土壤学报, 2003,40(1):118-122.
doi: 10.11766/trxb200101160116[49] JAFFÉR, YAMASHITA Y, MAIE N , et al. Dissolved organic matter in headwater streams:compositional variability across climatic regions of North America[J]. Geochimica Et Cosmochimica Acta, 2012,94(4):95-108.
doi: 10.1016/j.gca.2012.06.031[50] GHERNAOUT D . The hydrophilic/hydrophobic ratio vs.dissolved organics removal by coagulation: a review[J]. Journal of King Saud University (Science), 2014,26(3):169-180.
doi: 10.1016/j.jksus.2013.09.005[51] SCIUBBA L, CAVANI L, GRIGATTI M , et al. Relationships between stability,maturity,water-extractable organic matter of municipal sewage sludge composts and soil functionality[J]. Environmental Science and Pollution Research, 2015,22(17):13393-13403.
doi: 10.1007/s11356-015-4611-7 pmid: 25940492[52] ZHU W, YAO W, DU W . Heavy metal variation and characterization change of dissolved organic matter(DOM)obtained from composting or vermicomposting pig manure amended with maize straw[J]. Environmental Science and Pollution Research, 2016,23(12):12128-12139.
doi: 10.1007/s11356-016-6364-3 pmid: 26971511[53] MAQBOOL T, QUANG V L, CHO J , et al. Characterizing fluorescent dissolved organic matter in a membrane bioreactor via excitation-emission matrix combined with parallel factor analysis[J]. Bioresource Technology, 2016,89(2):31-39.
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