A2O与BAF组合工艺处理焦化废水的试验研究郑俊

A2/OBAF12111．2430022．243061A2/OBAF、BAF。COD16．7%COD、、TN27．0%、32．2%、46．5%BAFCOD、、TN72．4%、89．7%、18．9%。COD、TN153．7、7．7、65．2mg/L《》GB8978—1996。A2/OX703C1000－4602201117－0082－03CombinedProcessofA2/OandBAFforTreatmentofCokingWastewaterZHENGJun12DONGLing1ZHANGShi-hua11．SchoolofCivilEngineeringandArchitectureAnhuiUniversityofTechnologyMaanshan243002China2．HuaqiEnvironmentProtectionScienceandTechnologyDevelopmentCo．Ltd．Maanshan243061ChinaAbstractThecombinedprocessofA2/OandBAFwasusedtotreatcokingwastewaterandthetreatmentefficienciesinanaerobicstageanoxicstageandBAFwereinvestigatedrespectively．There-sultsshowthattheremovalrateofCODis16．7%intheanaerobicstagetheremovalratesofCODam-monianitrogenandTNare27．0%32．2%and46．5%respectivelyintheanoxicstagetheremovalratesofCODammonianitrogenandTNare72．4%89．7%and18．9%respectivelyintheBAFwithstabletreatmentefficiency．ThesimultaneousnitrificationanddenitrificationexistinBAFreactor．Thefi-naleffluentconcentrationofCODammonianitrogenandTNare153．7mg/L7．7mg/Land65．2mg/LrespectivelyandtheconcentrationofammonianitrogenmeetsthefirstclasscriteriaspecifiedinIn-tegratedWastewaterDischargeStandardGB8978－1996．KeywordscokingwastewaterA2/OprocessbiologicalaeratedfilterBAF、。A/O、A2/O1COD。A2/OBAF。11.1、、、COD1147．5～1554．8mg/L1316．9mg/L134．8～206．2mg/L174．4mg/L189．7～225．5mg/L208．5mg/LpH6．4～7．9·28·271720119CHINAWATER＆WASTEWATERVol．27No．17Sep．20117．318～26℃22℃。1.21。A1、A2BAF150mm2500mm22L2300mm20LBAF2000mm18L。4～6mm0．89g/cm34．8m2/g35%≤5．4%≤0．5%。1Fig．1Schematicdiagramofexperimentalsetup。A1A1BAFA2A2BAFA2。。4～6L/h0．23～0．34m3/m2·hBAFDO4～5mg/L3∶1100%。1.3CODTN。22.1A1、A2CODA1COD1147．5～1554．8mg/LCOD932．7～1228．3mg/L16．7%。A1COD。A2COD580．4～777．4mg/L696．4mg/LCOD457．8～635．9mg/L27．0%A1COD。①A2A1②、。2.2A1、A2NH3－NA1、A2NH3－N2。2A1、A2NH3－NFig．2RemovalefficiencyofNH3－NinA1andA2stages2A1NH3－N134．8～206．2mg/LNH3－N152．8～226．3mg/LA1NH3－N。NH3－NA1NH3－N。A2NH3－N95．0～124．8mg/LNH3－N58．7～87．2mg/L32．2%。。①、A1A2NH3－N②A2NH3－N。2.3BAFBAFCOD3。3BAFCOD457．8～635．9mg/LCOD125．7～187．8mg/L153．7mg/L72．4%。BAFCOD。①BAFA1A2·38·．watergasheat．comA2/OBAF2717。②BAFCODCOD。③BAF、。3BAFCODFig．3RemovalefficiencyofCODinBAFBAFNH3－N75．3mg/LNH3－N7．7mg/L89．7%BAF。①BAFA1、A2NH3－N②BAFNH3－N。2.4TNTN189．7～225．5mg/L208．5mg/LTN51．2～73．1mg/L65．2mg/LTN65．4%75．5%。TNA2BAFA2TN120．6～167．5mg/L150．3mg/LTN68．4～93．9mg/L81．1mg/L。TNNH3－N10%NO－3－N90%。①A2COD/TN4．6∶1C/N8②A2/OEDNR2EDN=R/1+REDNRR=1A2TN46．5%EDN=50%。BAFTN18．9%。BAFDO0．1～0．5mg/LBAF。BAFDODO、、。BAFDO、。3A2/OBAFA1COD16．7%A2COD、、TN27．0%、32．2%、46．5%BAFCOD、72．4%、89．7%TN18．9%。COD、NH3－NTN153．7、7．7、65．2mg/LNH3－N《》GB8978—1996。1．A2/OJ．200723144－7．2．A2/[e-mail]2011－02－21·48·2717．watergasheat．com