A2O曝气生物滤池深度生物脱氮除磷工艺分析陈永志

A2/O—1111221．1001242．130024A2/O—、。A2/O。A2/OA2/OC/N。、、《》GB18918—2002A。A2/O—C/NX703．1B1000－4602201110－0029－042008ZX07317－007－105、2008ZX07209－003“”QAK200802AdvancedBiologicalPhosphorusandNitrogenRemovalbyCombinedProcessA2/OandBAFCHENYong-zhi1PENGYong-zhen1WANGJian-hua1SUNHong-wei1HUOMing-xin2YANGWu21．KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentalRecoveryEngineeringBeijingUniversityofTechnologyBeijing100124China2．SchoolofUrbanandEnvironmentalSciencesNortheastNormalUniversityChangchun130024ChinaAbstractTheworkingprinciplesoperationmodesandcharacteristicsofthecombinedprocessofaerobic/anoxic/oxicA2/OandbiologicalaeratedfilterBAFareintroduced．Thenitrificationissep-aratedoutbyreducingsludgeretentiontimeSRTtoachievenitrificationinBAF．TheoperationofA2/OprocessatshortSRTisfavorableforphosphorusremovalanddenitrification．TheoperationofBAFatlongSRTisfavorableforthestableandeffectivenitrification．ThenitratenitrogenreturnedfromBAFprovidessufficientelectronacceptorfortheanoxiczoneofA2/OprocessthusthenecessaryconditionfordenitrifyingphosphorusremovalwhichgreatlyrelievestheinsufficiencyofcarbonsourceduringnitrogenandphosphorusremovalfromlowC/Nratiowastewater．Thesmall-scaletestresultsshowthatthecom-binedprocesscansimultaneouslyachievetheadvancedremovaloforganicmatternitrogenandphosphor-us．TheeffluentqualitymeetsthefirstlevelAcriteriaspecifiedinDischargeStandardofPollutantsfor·92·271020115CHINAWATER＆WASTEWATERVol．27No．10May2011MunicipalWastewaterTreatmentPlantGB18918－2002．KeywordscombinedprocessofA2/OandBAFadvancedbiologicalphosphorusandnitrogenremovallowC/NratiosludgeretentiontimeSRTinternalrecycledenitrifyingphosphorusremovalA2/O、、、12。A2/O、、3。、、45、、67。C/N95%《》GB18918—2002A。A2/O—A2/O、。。A2/O—、、。1A2/O—1.1A2/O—A2/O、、1。1A2/O—Fig．1SchematicdiagramofA2/O－BAFbiologicalsystem1.2①A2/O—、A2/OA2/O。、A2/O。②A2/OA2/OVFAsβ－PHAs·03·2710．watergasheat．com。PHAsC/N70%。DPAOs8。DPAOsPHAs、“”30%50%910。③A2/OTSS。1.3①、、、。②A2/O。③。④。⑤。⑥。21。1Tab．1InfluentcharacteristicsT/℃pHCOD/mg·L－1NH+4－N/mg·L－1NO－2－N/mg·L－1NO－3－N/mg·L－1TN/mg·L－1C/NTP/mg·L－114～167．3～7．6211～46665．5～71．30～0．220～0．9466．8～74．13．0～6．74．1～13．0157．434367．90．0040．0170．44．95．815～18℃A2/O96L/dHRT7．5hSRT15dMLSS4．0g/LDO1～2mg/L、DO0．1mg/LORP－350～－330mVORP－200～－150mVORP20～25mVDO4～5mg/LHRT0．5h。2。2Tab．2RemovalofvariouspollutantsunderdifferentinternalreturnratiosR=100%R=200%R=300%R=400%/mg·L－1/mg·L－1/%/mg·L－1/mg·L－1/%/mg·L－1/mg·L－1/%/mg·L－1/mg·L－1/%COD323．744．687．2273．146．282．1374．139．488．9335．844．986．1NH+4－N67．00．010068．10．998．667．20．299．769．90．998．8NO－3－N0．124．4—0．216．1—0．012．7—0．08．2—TN70．924．865．072．116．577．170．69．686．473．38．788．1TP5．70．394．75．90．296．65．90．198．35．90．198．32COD、NH+4－NTPATN200%·13·．watergasheat．comA2/O—2710TNGB18918—2002B300%400%TN9．68．7mg/LGB18918—2002AC/N、。A2/O—、、、C/N。3A2/O—、C/N、、GB18918—2002AA2/OA2/O。C/N。1．A2OC/NJ．200859123126－3131．2．A2/OJ．2006265722－727．3．A2/OJ．2003291322－26．4TairaHHiroshiTNaoyukiK．Advancedtreatmentofsewagebypre-coagulationandbiologicalfiltrationprocessJ．WaterRes200337174259－4269．5JinwooJTairaHHiroshiTetal．Developmentofbio-logicalfilterastertiarytreatmentforeffectivenitrogenre-movalBiologicalfilterfortertiarytreatmentJ．WaterRes20064061127－1136．6．J．2008241410－14．7．J．2009251292－95．8HuZRWentzelMCEkamaGA．Anoxicgrowthofphosphate-accumulatingorganismPAOsinbiologicalnutrientremovalactivatedsludgesystemJ．WaterRes200236194927－4937．9KubaTVanLoosdrechtMCMHeijnenJJ．Phosphor-usandnitrogenremovalwithminimalCODrequirementbyintegrationofdenitrifyingdephosphatationandnitrifi-cationinatwo-sludgesystemJ．WaterRes19963071702－1710．10BortoneGMasiliLibelliSTilcheAetal．AnoxicphosphorusuptakeinthedephanoxprocessJ．WaterSciTechnol1999405/[e-mail][e-mail]2010－12－01·23·2710．watergasheat．com