低温SBR工艺活性污泥代谢特性研究
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2020-02-24 09:51:04
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中国环境科学2012,32(1):69-74ChinaEnvironmentalScience低温SBR工艺活性污泥代谢特性研究尹军,李瑞,张振庭,王建辉,王小龙(吉林建筑工程学院市政与环境工程学院,吉林长春130118)摘要:在(7±1)℃条件下,从污染物的去除效能、生物活性、污泥特性等方面,研究了低温SBR系统中活性污泥的代谢特性.结果表明:低温SBR系统在好氧阶段前40min能够将96%的COD去除,整个运行周期活性污泥对COD的代谢状况良好;由于低温的影响,活性污泥硝化反应过程受到抑制,反硝化过程无法正常进行;低温不是影响SBR反应器中聚磷菌P代谢过程的关键因素,在低温条件下聚磷菌对P的摄取、释放代谢状况良好;活性污泥2,3,5氯化三苯基四氮唑(TTc)和碘硝基四氮唑(INT)电子传递体系(ETS)活性呈现出周期性变化规律,TIC和INT-ETS活性能够有效表征整个运行过程活性污泥的代谢特性;稳定运行的低温SBR系统活性污泥表现出良好的沉降性,MLSS、MLVSS、以及MLlVss儿SS都高于常温SBR系统.关键词:污水处理;低温SBR;活性污泥;代谢特性;生物活性:沉降性中图分类号:X703.5文献标识码:A文章编号:1000—6923(2012)01—0069—06Activatedsludgemetabolicfeaturesinlowtemperaturesequencingbathreactor.YINJun。,LIRui,ZHANGZhen-ting,WANGJian-hui,WANGXiao—long(SchoolofMunicipalandEnvironmentalEngineering,JilinArchitecturalandCivilEngineeringInstitute,Changchun130118,China).ChinaEnvironmentalScience,2012,32(1):69~74Abstract:TheactivatedsludgemetabolicfeaturesofalowtemperatureSBRsystem(7±1)℃werestudiedforpollutantremovaleficiency,bioactivity,andthesludgefeatureaspects.ThelowtemperatureSBRsystemremoved96%ofCODwithin40minutesduringtheaerobicphase.Thewholeoperationcyclewasbenefici~toCODdegradation.Thenitrationprocesswasrestrainedandthedenitrifyingprocesswasunabletoworknormallyduetotheefectoflowtemperature.Thelowtemperaturewasnotthekeyfactorthatafectedthephosphorusmetabolicprocessofpoly-PbacteriaintheSBRreacto~asthepoly-Pbacteriacouldabsorbandreleasethephosphorusnormallyinthelowtemperatureenvironment.TheTTC(2,3,5-triphenyl-tetrazoliumchloride)andINT[2-(p-indophenols)-3-(p—nitropheny1)-5-phenyl·tetrazoliumChloride]ElectronTransportSystem(ETS)activitycanefectivelycharacterizetheoperationofactivatedsludgemetabolicproperties.Sludgeinthestableoperatedlow—temperatureSBRsystemshowedgoodsettling.MLSS,MLVSSandMLVSS/MLSSinthelowtemperatureSBRsystemwerehigherthanthatinnormaltemperatureSBRsystem.Keywords:sewagetreatment;towtemperatureSBR;activatedsludge;metabolicfeatures;bioactivity:setleabilitySBR污水处理工艺是一种简便、高效、耐冲击负荷能力强、运行方式灵活、具有同步脱氮除磷能力的活性污泥污水处理方法¨J.目前,国内外对于常温SBR工艺运行特征的研究已逐渐成熟,
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