本文利用电絮凝(electrocoagulation,EC)强化动态膜生物反应器(dynamic membrane bioreactor,DMBR)处理模拟生活污水.试验过程中比较了DBMR、EC-DMBR及阴极负载动态膜生物反应器(cathode load electrocoagulation dynamic membrane bioreactor,CLEC-DMBR)运行效能.结果表明:电絮凝工艺显著提高了系统对总磷的去除率,对TP的去除率超过90％,对COD及NH3-N的去除效果影响较小;通过微生物活性检测分析表明,电絮凝对微生物活性有一定的促进作用,微生物活性与反应器内累积的溶解性微生物代谢产物(soluble microbial products,SMP)浓度负相关;进一步研究表明,CLEC-DMBR中存在的微小气泡改变了动态膜孔隙率,显著延缓了膜污染速率,其运行周期分别为DMBR的2.5倍及EC-DMBR的2.14倍.对各阶段动态膜剥离物红外扫描结果表明,EC装置的加入对于动态膜中微生物体系的物质构成无明显影响.
参考文献
| [1] | 张海丰,张再兴,张兰河.无排泥条件下膜生物反应器污泥混合液可滤性分析[J].化工进展,2011(12):2775-2780. |
| [2] | 赵学辉,戴海平,范运双.新型膜生物反应器及膜污染的研究进展[J].工业水处理,2009(03):8-11. |
| [3] | 范彬,黄霞,文湘华,于妍.动态膜-生物反应器对城市污水的处理[J].环境科学,2002(06):51-56. |
| [4] | Hongbo Liu;Changzhu Yang;Wenhong Pu .Formation mechanism and structure of dynamic membrane in the dynamic membrane bioreactor[J].Chemical engineering journal,2009(2/3):290-295. |
| [5] | Muhammad H. Al-Malack;G.K. Anderson .Formation of dynamic membranes with crossflow microfiltration[J].Journal of Membrane Science,1996(2):287-296. |
| [6] | Marco Panizza;Giacomo Cerisola .Applicability of electrochemical methods to carwash wastewaters for reuse. Part 2: Electrocoagulation and anodic oxidation integrated process[J].Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry,2010(2):236-240. |
| [7] | Yalcin Sevki Yildiz;Ali Savas Koparal;Sahset Irdemez;Buelent Keskinler .Electrocoagulation of synthetically prepared waters containing high concentration of NOM using iron cast electrodes[J].Journal of hazardous materials,2007(2):373-380. |
| [8] | S. Aoudj;A. Khelifa;N. Drouiche .Electrocoagulation process applied to wastewater containing dyes from textile industry[J].Chemical Engineering and Processing,2010(11):1176-1182. |
| [9] | Le-Clech P;Chen V;Fane TAG .Fouling in membrane bioreactors used in wastewater treatment[J].Journal of Membrane Science,2006(1/2):17-53. |
| [10] | 崔志广,李舒渊,夏俊林,薛涛,黄霞.电絮凝强化膜生物反应器除磷研究[J].中国给水排水,2009(07):1-4. |
| [11] | M.Yousuf A.Mollah;Robert Schennach;Jose R.Parga .Electrocoagulation (EC)-science and applications[J].Journal of hazardous materials,2001(1):29-41. |
| [12] | Philips S.;Rabaey K.;Verstraete W. .Impact of iron salts on activated sludge and interaction with nitrite or nitrate[J].Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies,2003(3):229-239. |
| [13] | De Freitas JM;Meneghini R .Iron and its sensitive balance in the cell.[J].Mutation Research: International Journal on Mutagenesis, Chromosome Breakage and Related Subjects,2001(1/2):153-159. |
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