EGSB_BAF集成系统实现厌氧氨氧化_甲烷化和短程硝化反硝化_张代钧

EGSB-BAF集成系统实现厌氧氨氧化、甲烷化和短程硝化反硝化张代钧1,2,阎青1,祖波1,31.重庆大学环境科学系,重庆4000302.重庆大学,西南资源开发及环境灾害控制工程教育部重点实验室,重庆4000303.重庆交通大学河海学院,重庆400074摘要:将膨胀颗粒污泥床(EGSB)和曝气生物滤池(BAF)集成,EGSB出水进入BAF进行短程硝化,BAF出水外回流至EGSB反应器为后者提供亚硝态氮,在不需外部投加亚硝态氮的条件下,实现厌氧氨氧化、甲烷化和短程硝化反硝化的耦合,系统地处理Q(氨氮)为50mgPL和Q(CODCr)为500mgPL的合成废水.结果表明:当外回流比为200%时,系统CODCr,氨氮和总氮的去除率分别为9214%,9714%和8016%;出水Q(氨氮),Q(亚硝态氮),Q(硝态氮)和Q(CODCr)分别为1105,4130,2156和3513mgPL;CODCr,总氮和氨氮的去除负荷速率分别为11770,01137和01164kgP(m3#d).与传统的活性污泥过程相比,EGSB-BAF集成系统回收甲烷1103LPd,占系统CODCr去除量的3710%;在系统总氮的去除过程中,厌氧氨氧化途径占3519%,短程反硝化途径占4714%,全程反硝化途径占1617%.关键词:EGSB-BAF集成系统;厌氧氨氧化;甲烷化;短程硝化反硝化中图分类号:X703文献标志码:A文章编号:1001-6929(2009)04-0467-06AnaerobicAmmoniumOxidation,MethanogenesisandShortcutNitrification-DenitrificationbyEGSB-BAFIntegratedSystemZHANGDai-jun1,2,YANQing1,ZUBo1,31.DepartmentofEnvironmentalScience,ChongqingUniversity,Chongqing400030,China2.KeyLaboratoryofSouthwestChinaResourcesExploitation&EnvironmentalDisasterControlEngineering,StateMinistryofEducation,ChongqingUniversity,Chongqing400030,China3.SchoolofRiverandOceanEngineering,ChongqingJiaotongUniversity,Chongqing400074,ChinaAbstract:Anaerobicammoniumoxidation,methanogenesisandshortcutnitrification-denitrificationweresuccessfullycoupledinasystemintegratingEGSBandBAFreactorswithoutaddingNO2--Nintheinfluent.TheeffluentofEGSBwastreatedbyshortcutnitrificationinBAF,whiletheeffluentofBAFwasrecycledtoEGSBtoprovideNO2--Nforthelatter.AsyntheticwastewatercontainingQ(CODCr)of500mgPLandQ(NH4+-N)of50mgPLwastreatedbytheEGSB-BAFintegratedsystemwithdifferentouterrecycleratiosused.TheexperimentalresultsdemonstratedthattheremovalefficienciesofCODCr,NH4+-Nandtotalnitrogenreached9214%,9714%,and8016%respectivelyattheouterrecycleratioof200%.TheQ(NH4+-N),Q(NO2--N),Q(NO3--N),andQ(CODCr)intheeffluentofthesystemwere1105,4130,2156,and3513mgPLrespectively.TheremovalloadingratesofCODCr,totalnitrogenandammoniumwere11770,01137,and01164kgP(m3#d)respectively.Comparedwiththeconventionalactivatedsludgeprocess,theEGSB-BAFintegratedsystemreclaimedCH4of1