复合腐殖生物活性填料对活性污泥沉降性能的影响
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摘要
为了考察复合腐殖生物活性填料对活性污泥沉降性能的影响,通过内置填料、外置填料和对照组SBR污水处理工艺的对比运行,对3组反应器的运行效能、沉降性能、胞外聚合物和微生物群落分布进行了研究。结果表明:投加复合腐殖生物活性填料的SBR反应器相比对照组SBR反应器可加强氮、磷的去除效能,改善活性污泥的沉降性能;通过胞外聚合物分析,发现内置填料和外置填料活性污泥的胞外聚合物(多糖和蛋白质)含量一直低于对照组的;3个微生物群落主要分布在Saprospiraceae、Rhodocyclaceae、Comamonadaceae、Flavobacteriaceae、env.OPS_17、Spirochaetaceae等6个科内;内置填料微生物群落(8.09%)和外置填料微生物群落(2.86%)中的Saprospiraceae,要比对照组微生物群落(29.82%)的比例高,表明通过复合腐殖生物活性填料的作用,Saprospiraceae类群减少,胞外聚合物分泌降低,活性污泥沉降性能得到增强,这与反应器实际运行效果和胞外聚合物分析研究内容一致。
In order to investigate the influence of a complex humic biological filler on sludge settling properties,operational efficiency,settling properties,extracellular polymeric substances,and microbial community distribution were studied by running an ordinary SBR,an SBR with an internal complex humic biological filler,and an SBR with an external complex humic biological filler. The results showed that compared to the control SBR,adding a complex humic biological filler enhanced the nitrogen and phosphorus removal efficiencies,thereby improving the sludge settling properties. he polysaccharides and protein content reduced when biological filler was added. The microflora in the three reactors were Saprospiraceae,Rhodocyclaceae,Comamonadaceae,Flavobacteriaceae,env. OPS_17,and Spirochaetaceae. The amounts of Saprospiraceae in the internal( 8. 09%)and external( 2. 86%) reactors were lower than in the control group( 29. 82%),indicating that a complex humic biological filler could reduce Saprospiraceae content,decrease the amount of extracellular polymeric substances,and enhance the sludge settling properties,which is consistent with the actual operating results from reactors and extracellular polymeric substances analysis.
In order to investigate the influence of a complex humic biological filler on sludge settling properties,operational efficiency,settling properties,extracellular polymeric substances,and microbial community distribution were studied by running an ordinary SBR,an SBR with an internal complex humic biological filler,and an SBR with an external complex humic biological filler. The results showed that compared to the control SBR,adding a complex humic biological filler enhanced the nitrogen and phosphorus removal efficiencies,thereby improving the sludge settling properties. he polysaccharides and protein content reduced when biological filler was added. The microflora in the three reactors were Saprospiraceae,Rhodocyclaceae,Comamonadaceae,Flavobacteriaceae,env. OPS_17,and Spirochaetaceae. The amounts of Saprospiraceae in the internal( 8. 09%)and external( 2. 86%) reactors were lower than in the control group( 29. 82%),indicating that a complex humic biological filler could reduce Saprospiraceae content,decrease the amount of extracellular polymeric substances,and enhance the sludge settling properties,which is consistent with the actual operating results from reactors and extracellular polymeric substances analysis.
引文
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[15]范拴喜.三株优势菌对多环芳烃的降解性能研究.污染防治技术,2010,23(1):1-6FAN S.X.Study on three predominant strains used in the degradation of polycyclic aromatic hydrocarbons.Pollution Control Technology,2010,23(1):1-6(in Chinese)
[2]王杰,彭永臻,杨雄,等.温度对活性污泥沉降性能与微生物种群结构的影响.中国环境科学,2016,36(1):109-116WANG J,PENG Y.Z.,YANG X.,et al.Effect of temperature on ativated sudge settleability and microbial community structure.China Environmental Science,2016,36(1):109-116(in Chinese)
[3]刘永红,贺延龄,刘宗宽,等.厌氧反应器内颗粒污泥沉降速率的测定与研究.工业用水与废水,2005,36(5):45-48LIU Y.H.,HE Y.L.,LIU Z.K.,et al.Measurement and study of settling velocity of granular sludge in anaerobic reactors.Industrial Water&Wastewater,2005,36(5):45-48(in chinese)
[4]周健,龙腾锐,苗利利.胞外聚合物EPS对活性污泥沉降性能的影响研究.环境科学学报,2004,24(4):613-618ZHOU J.,LONG T.R.,MIAO L.L.Effect of extracellular polymeric substances(EPS)on sedimentation of activated sludge.Acta Scientiae Circumstantiae,2004,24(4):613-618(in chinese)
[5]URBAIN V.,BLOCK J.C.,MANEM J.Bioflocculation in activated sludge:An analytic approach.Water Research,1993,27(5):829-838
[6]RYSSOV-NIELSEN H.The role of natural extracellular polymers in the bioflocculation and dewatering of sludge.Vatten,1975,1:33-39
[7]LIAO B.Q.,ALLEN D.G.,DROPPO I.G.,et al.Surface properoties of sludge and their role in bioflocculation and settleability.Water Research,2001,35:339-350
[8]YASUMOTO M.,SHOICHI N.Biochemical and physical properties of an activated sludge on settling characteristics.Water Research,1976,10(1):71-77
[9]周琪,林涛,谢丽,等.污水处理生物絮体絮凝沉淀机理分析的综述.同济大学学报(自然科学版),2009,37(1):78-83ZHOU Q.,LIN T.,XIE L.,et al.Review of mechanism of bionocculation and settleability of activated sludge bioflocs.Journal of Tongji University(Natural Science),2009,37(1):78-83(in chinese)
[10]刘艳,张立卿,邢嘉珅,等.SBR工艺污泥沉降性能的影响因素研究.中国给水排水,2008,24(7):104-108LIU Y.,ZHANG L.Q.,XING J.K.,et al.Study on influencing factors of sludge settleability in SBR.China Water&Wastewater,2008,24(7):104-108(in Chinese)
[11]高大文,辛晓东.MBR膜污染过程中微生物群落结构与代谢产物分析.哈尔滨工业大学学报,2014,46(2):26-32GAO D.W.,XIN X.D.Analysis of microbial community structure and metabolites during the MBR membrane fouling process.Journal of Harbin Institute of Technology,2014,46(2):26-32(in chinese)
[12]龙向宇.胞外聚合物及其表面性质对活性污泥絮凝沉降性能的影响研究.重庆:重庆大学博士学位论文,2008LONG X.Y.Influence of extracellular polymers and their surface characters on flocculation and settlement of activated sludge.Chongqing:Master Dissertation of Chongqing University,2008(in chinese)
[13]聂麦茜,张志杰,孙先锋,等.特效黄杆菌对蒽菲芘的降解性能研究.微生物学通报,2001,28(5):32-36NIE M.Q.,ZHANG Z.L.,SUN X.F.,et al.The study of degradation of anthracene phenanthrene and pyrene by effecctive flavobacterium.Microbiology China,2001,28(5):32-36(in Chinese)
[14]王银善,庞学军.黄杆菌p3-2的分离及降解有机磷农药的某些性质.环境科学学报,1985,5(3):315-320WANG Y.S.,PANG X.J.Isolation of Flavobacterium SP.p3-2 and its properties relevant to degradation of organophos-phorus Insecticides.Acta Scientiae Circumstantiae,1985,5(3):315-320(in Chinese)
[15]范拴喜.三株优势菌对多环芳烃的降解性能研究.污染防治技术,2010,23(1):1-6FAN S.X.Study on three predominant strains used in the degradation of polycyclic aromatic hydrocarbons.Pollution Control Technology,2010,23(1):1-6(in Chinese)