炼化污水的厌氧生物预处理技术
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摘要
炼化污水中污染源以难降解有机物为主,降低污水生物毒性,提高其可生化性是炼化污水达标排放的关键环节。为降低工艺运行成本及产泥量,同时为后续好氧生化处理提供优质水源,实验采用高效厌氧生物反应器处理炼化污水,探讨炼化污水厌氧处理过程中的COD去除率、能源转化效能、微生物菌群变化、可生化性及有机污染物降解效果。结果表明,该反应器对炼化污水COD平均去除率达70.01%,出水中大分子复杂难降解有机污染物转化为以小分子有机酸类为主的有机物,可生化性明显提高,为后续生物处理提供良好运行条件。
Refractory organics are the primary organic pollutants of refining wastewater. Reduction of biological toxicity and improvement of biodegradability is the key unit in treating refining wastewater. To reduce running cost and residual sludge,at the same time to provide favorable conditions for subsequent aerobic biochemical treatment,a highly efficient anaerobic biological reactor( ABR) was used as a pretreatment technology. The performance of high efficient ABR treating refining wastewater was investigated in terms of COD removal efficiency,energy conversion efficiency,change of microbial population,biodegradability and organic pollutants degradation efficiency. The result showed that the COD average removal efficiency was 70. 01%. The biodegradability of treated wastewater was improved and the major pollutants were converted to small organic acids creating favorable conditions for subsequent biological treatment.
Refractory organics are the primary organic pollutants of refining wastewater. Reduction of biological toxicity and improvement of biodegradability is the key unit in treating refining wastewater. To reduce running cost and residual sludge,at the same time to provide favorable conditions for subsequent aerobic biochemical treatment,a highly efficient anaerobic biological reactor( ABR) was used as a pretreatment technology. The performance of high efficient ABR treating refining wastewater was investigated in terms of COD removal efficiency,energy conversion efficiency,change of microbial population,biodegradability and organic pollutants degradation efficiency. The result showed that the COD average removal efficiency was 70. 01%. The biodegradability of treated wastewater was improved and the major pollutants were converted to small organic acids creating favorable conditions for subsequent biological treatment.
引文
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[9]Maríaángeles Martín,Inmaculada González,Antonio Serrano,et al.Evaluation of the improvement of sonication pretreatment in the anaerobic digestion of sewage sludge.Journal of Environmental Management,2015,147:330-337
[10]Yang X.N.,He J.G.,Gui F.Y.,et al.Effects of temperature on the degradation pathway of domestic sewage in upflow anaerobic sludge blanked reactor.Journal of Harbin Institute of Technology,2011,18(5):26-30
[11]戴世明.UASB及其衍生反应器的运行性能研究.安全与环境工程,2010,17(5):17-22Dai S.M.Study on the operating characteristics of UASB and three anaerobic reactors derived from UASB.Safety and Environmental Engineering,2010,17(5):17-22(in Chinese)
[12]Yi J.C.,Mei F.C.,Chung L.L.,et al.A review on anaerobic-aerobic treatment of industrial and municipal wastewater.Chemical Engineering Journal,2009,155:1-18
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[14]国家环境保护总局.水和废水监测分析方法(第4版).北京:中国环境科学出版社,2005
[15]Manjunath,N.T.,Mehrotra,I.,Mathur,R.P.Treatment of wastewater from slaughterhouse by DAF-UASB system.Water Research,2000,34(6):1930-1936
[16]Enitan A.,Kumari S.,Swalaha F.,et al.Kinetic modelling and characterization of microbial community present in a full-scale UASB reactor treating brewery effluent.Microbial Ecology,2014,67(2):358-368
[17]胡纪萃,周孟津,左剑恶,等.废水厌氧生物处理理论与技术.北京:中国建筑工业出版社,2003
[2]Chen C.M.,Chen H.S.,Guo X.,et al.Advanced ozone treatment of heavy oil refining wastewater by activated carbon supported iron oxide.Journal of Industrial and Engineering Chemistry,2014,(20):2782-2791
[3]Yu L.,Han M.,He F.A review of treating oily wastewater.Arabian Journal of Chemistry,2013,1-9.doi:10.1016/j.arabjc.2013.07.020
[4]陈英,陈东,杨贺群,等.循环曝气生物氧化反应器处理炼厂重油裂解废水.浙江海洋学院学报(自然科学版),2013,32(1):43-48Chen Y.,Chen D.,Yang H.Q.,et al.Treatment of heavy oil cracking wastewater from petroleum refinery by circulating aerated bioreactor.Journal of Zhejiang Ocean University(Natural Science),2013,32(1):43-48(in Chinese)
[5]金育辉,吴敌,宋郭静,等.好氧颗粒污泥法处理石化废水.环境工程学报,2014,8(12):5335-5338Jin Y.H.,Wu D.,Song G.J.,et al.Treating petrochemical wastewater using aerobic granular sludge.Chinese Journal of Environmental Engineering,2014,8(12):5335-5338(in Chinese)
[6]谢文玉,钟理,陈建军,等.隔离曝气生物滤池预处理炼油废碱水.高校化学工程学报,2008,22(3):484-490Xie W.Y.,Zhong L.,Chen J.J.,et al.Pretreatment of alkaline wastewater from oil refinery using isolated biological aeration filter.Journal of Chemical Engineering of Chinese Universities,2008,22(3):484-490(in Chinese)
[7]王红叶,侯银萍,彭党聪,等.上流式厌氧污泥床反应器处理饮料废水.环境工程学报,2015,9(2):743-748Wang H.Y.,Hou Y.P.,Peng D.C.,et al.Treatment of beverage wastewater using upflow anaerobic sludge blanket reactor.Chinese Journal of Environmental Engineering,2015,9(2):743-748(in Chinese)
[8]王冰,韩洪军,刘硕,等.颗粒活性炭加速厌氧反应器污泥颗粒化的研究.中国给水排水,2011,27(11):72-74Wang B.,Han H.J.,Liu S.,et al.Speeding up sludge granulation in anaerobic reactor by adding granular activated carbon.China Water&Wastewater,2011,27(11):72-74(in Chinese)
[9]Maríaángeles Martín,Inmaculada González,Antonio Serrano,et al.Evaluation of the improvement of sonication pretreatment in the anaerobic digestion of sewage sludge.Journal of Environmental Management,2015,147:330-337
[10]Yang X.N.,He J.G.,Gui F.Y.,et al.Effects of temperature on the degradation pathway of domestic sewage in upflow anaerobic sludge blanked reactor.Journal of Harbin Institute of Technology,2011,18(5):26-30
[11]戴世明.UASB及其衍生反应器的运行性能研究.安全与环境工程,2010,17(5):17-22Dai S.M.Study on the operating characteristics of UASB and three anaerobic reactors derived from UASB.Safety and Environmental Engineering,2010,17(5):17-22(in Chinese)
[12]Yi J.C.,Mei F.C.,Chung L.L.,et al.A review on anaerobic-aerobic treatment of industrial and municipal wastewater.Chemical Engineering Journal,2009,155:1-18
[13]Ghangrekar,M.M.,Asolekar,S.R.,Joshi,S.G.Characteristics of sludge developed under different loading conditions during UASB reactor start-up and granulation.Water Research,2005,39(6):1123-1133
[14]国家环境保护总局.水和废水监测分析方法(第4版).北京:中国环境科学出版社,2005
[15]Manjunath,N.T.,Mehrotra,I.,Mathur,R.P.Treatment of wastewater from slaughterhouse by DAF-UASB system.Water Research,2000,34(6):1930-1936
[16]Enitan A.,Kumari S.,Swalaha F.,et al.Kinetic modelling and characterization of microbial community present in a full-scale UASB reactor treating brewery effluent.Microbial Ecology,2014,67(2):358-368
[17]胡纪萃,周孟津,左剑恶,等.废水厌氧生物处理理论与技术.北京:中国建筑工业出版社,2003