冬季A2O工艺在城市污水处理厂的运行经验总结张俊

!!!!!!!!!!!!!!!!!!!!!!!!A2O215006A2O《》GB18918—2002A。＜12℃DO、、、。A2OTU992．3C1000－4602201818－0114－04OperationPracticeofA2OProcessinaMunicipalSewageTreatmentPlantinWinterZHANGJunSuzhouDrainageCompanyLimitedSuzhou215006ChinaAbstractTheA2Oprocessisappliedinthebio-poolconstructedinthefourthphaseofamunici-palsewagetreatmentplantinSuzhou．ThefirstlevelAcriteriainDischargeStandardofPollutantsforMunicipalWastewaterTreatmentPlantGB18918－2002shouldbeimplemented．Whenthewatertem-peraturewaslowerthan12℃inwinterthetotalnitrogenremovaleffectwasnotsatisfactory．Byadjus-tingtheDOattheendofaerationtankrefluxratiomulti-pointwaterintakeandinternalrecirculationpointithasachievedagoodnitrogenandphosphorusremovaleffectandtheeffluenthasmetthedis-chargestandard．KeywordsmunicipalsewagetreatmentplantA2Oprocesstotalnitrogennitrogenandphosphorusremoval1。、。A2O2151、3、5、41、3、5、7。A2OA2O、。A2OA2O1。厌氧缺氧好氧（硝化）二沉池进水出水混合液回流污泥回流剩余污泥a.传统A2O工艺·411·341820189CHINAWATEＲ＆WASTEWATEＲVol．34No．18Sep．2018缺氧厌氧好氧二沉池50%~70%进水出水30%~50%进水污泥回流（50%~100%）剩余污泥混合液回流（50%~1５0%）b.倒置A2O工艺1A2OA2OFig．1FlowchartoftraditionalA2OprocessandinvertedA2Oprocess1.16．0×104m3/d、1。1、Tab．1DesigninfluentandeffluentqualityCODBOD5SSTNNH3－NTP/mg·L－136018025050355．0/mg·L－150101015580．5/%86．194．496．070．085．777．190．01.2①36．65m×8．0m3．0m123．0×104m3/d。3250m3/h36．65m×8．0m×3．5m1225．54m3/m2·h4．26m3/m2·h16．1mm/s3．0L/s·m0．63h3000kg/d97．0%BOD510%SS20%TN2．5%TP。②245360m315。。1～23～58161410．0kW22．5kW。。。。32161250m3/h35kPa。。A/A/O“”——。③321135m3/min240kW80db。④1625m3/h242m×8．6m×4．0m41．12m3/m2·h0．86m3/m2·h3．55h3．28mm/s1．56L/s·m290m1．20L/s·m。4。。。541100%～150%938m3/h50kPa。321120m3/h90kPa。2A2O1～23～56～15。1100%75%160%。＜12℃60%。、。＜15℃12。。90min0．016mg/g·min·511·．watergasheat．comA2O34180．028mg/g·min30．218mg/g·min。。33.1A2OA2O3#。、DO、。3.1.145。160%200%。DO。3.1.2DODOHＲT。DODO。DO。13～159～126～8。11～15DO0．2mg/L。3.1.3。1#100%1#100%、2#30%。DOVFA。2、3。2Tab．2Indexesbeforeadjustmentmg·L－11#15#MLSSDOMLSSDONH3－NTNTP2017－01－2751100．5840105．650．7915．81．652017－01－2849801．5038604．052．4214．00．672017－01－2959800．1239408．030．2312．80．462017－01－3049500．2638406．261．3212．70．372017－01－3147200．3436504．850．6212．20．882017－02－0152200．1434205．780．8711．20．722017－02－0253200．1837204．322．3113．30．933Tab．3Indexesafteradjustmentmg·L－11#15#MLSSDOMLSSDONH3－NTNTP2017－02－0448600．2238400．360．16013．41．622017－02－0550600．2039000．510．24013．21．722017－02－0644800．1240600．410．50212．71．542017－02－0745200．1342200．420．23112．01．672017－02－0849400．1542600．310．47911．71．992017－02－0949000．1842000．330．60811．22．082017－02－1048200．1640400．320．2539．91．662017－02－1151500．1939700．290．19911．61．442017－02－1249500．2040100．340．56611．41．382017－02－1348200．1442200．430．2419．951．573.2A2OA2O2。缺氧厌氧好氧二沉池70％进水出水３０％进水70%混合液回流30%混合液回流污泥回流剩余污泥2A2OFig．2InvertedA2OprocessoftheWWTPA2O30%。70%30%。·611·3418．watergasheat．com50%。242．7mg/L4。4A2OTab．4IndexesoftheinvertedA2Oprocessafteradjustmentmg·L－11#15#MLSSDOMLSSDOTNTP2017－02－1756600．1844400．417．080．982017－02－1858900．1642700．327．860．972017－02－1960100．1742900．288．680．752017－02－2060600．1543800．198．640．932017－02－2159200．1944000．178．640．842017－02－2261400．1542600．257．570．442017－02－2362800．2045000．217．860．752017－02－2460600．2043800．197．570．422017－02－2561800．1643100．177．670．722017－02－2661300．1245400．245．720．822017－02－2760800．1347200．617．570．552017－02－2865000．3246200．117．710．794①A2O、、。DO＜0．5mg/L200%30%72．6%。②A2OA2O82%、A2O。1．D．2014．DongTao．OperationalTestofMicroporeAerationVaria-ble-SpeedoxidationDitchinaPilot-scaleandInfluenceFactorsofBiologicalPhosphorusＲemovalD．Xi’anXi’anUniversityofArchitectureandTechnology2014inChinese．2．J．2013762013－2018．CaoJiashunHouLianghaoFangFangetal．EffectoftemperatureandexternalcarbonsourceonsimultaneousnitrogenandphosphorusremovalJ．ChineseJournalofEnvironmentalEngineering2013762013－2018inChinese．3．A/OJ．200826356－58．WangShepingWangQingqingHuiLinglingetal．Thedeterminationofdenitrificationrateofstep-feedA/Oni-trogenremovalprocessJ．EnvironmentalEngineering200826356－58inChinese．4．OAOD．2015．MaHaoliang．ＲesearchontheDomesticWastewaterbytheTwo-pointInfluentOAOProcessD．ZhengzhouZhengzhouUniversity2015inChinese．5．A－A2/OJ．2016321936－39．LyuZhenDongYangShiYadongetal．Studyonopti-mizationofreturnsysteminA－A2/OprocessJ．ChinaWater＆Wastewater2016321936－39inChi-nese．1987－。[e-mail]2017－04－14·711·．watergasheat．comA2O3418