DO对SBBR反应器污泥减量效能的影响窦艳艳

DOSBBR400045SBBRDO。DO3、57mg/LORP－16．68～－63．29、210．55～－51．37216．03～75mV0．163、0．0780．099kgMLSS/kgCOD·dDO5mg/L0．275cm0．225cm55%45%DODO5mg/LCOD、NH+4－N、TN37、3．02、17．61mg/L。DO5mg/L。DOSBBRX703A1000－4602201121－0015－04InfluenceofDOonSludgeReductioninSBBRDOUYan-yanZHOUJianHANYiQINGuang-xuKeyLaboratoryofThreeGorgesReservoirRegion’sEco-Environment＜MinistryofEducation＞ChongqingUniversityChongqing400045ChinaAbstractTheinfluenceofDOoncompositionofbiofilmmicro-environmentandsludgereductionwasinvestigatedbyredoxpotentialORPmicroelectrodesinSBBR．TheresultshowsthatwhenDOis3mg/L5mg/Land7mg/LtheORPsare－16．68to－63．29mV210．55to－51．37mVand216．03to75mVrespectivelyfromoutsidetoinsideinbiofilmandtheaveragesludgeyieldsare0．163kgMLSS/kgCOD·d0．078kgMLSS/kgCOD·dand0．099kgMLSS/kgCOD·drespectively．WhenDOis5mg/Lthesludgeyieldisthelowestthethicknessesofanoxiclayerandaerobiclayerare0．275cmand0．225cmrespectivelyandtheanoxicenvironmentandaerobicenvironmentare55%and45%respectively．DOhasasignificantinfluenceonpollutantsremoval．WhenDOis5mg/Ltheefflu-entconcentrationsofCODNH+4－NandTNare37mg/L3．02mg/Land17．61mg/Lrespectively．ConsideringsludgeproductionrateandpollutantsremovaleffecttheappropriateDOis5mg/L．KeywordsdissolvedoxygenDOconcentrationSBBRmicro-environmentsludgere-duction2008ZX07315－005。1SBBR、SBRCASSSBBR·51·2721201111CHINAWATER＆WASTEWATERVol．27No．21Nov．2011。2DODO1．8mg/L6．0mg/L0．28mgMLSS/mgBOD50．2mgMLSS/mgBOD5。Saby3OSAORPORP100mV－250mV23%58%ORP。DO。11.1SBBR110L。1Fig．1Schematicdiagramoftestdevice1.21。1Tab．1Qualityofrawwastewatermg·L－1CODNH+4－NTNPO3－4－PSS260～45032～5345～624．4～6．746～11540038495．17751.3DOSBBR。25℃45%1kgCOD/m3·d6．5h—6h—0．5h—DO3、57mg/LCOD、NH+4－N、TN、PO3－4－PORP。、、PAC。22.1DODODO3、57mg/L840．71、19．7926．70gDO5mg/LDO3、7mg/L51．39%25．88%。DO3、57mg/L0．163、0．0780．099kgMLSS/kgCOD·dDO5mg/LDO37mg/L51．82%20．52%。DO2。2DOCODFig．2VariationcurveofDOandCODinrunningperiodofreactorDODO57mg/LDO1h4．965．28mg/L1～2DO3DO5．146．02mg/L5．607．27mg/LDO3mg/L0．5hDO0．71mg/L0．33mg/L2hDO2．9mg/L。·61·2721．watergasheat．com2。0．5cmDO3mg/LORP－16．68～－63．29mV0．5cm100%DO5mg/LORP210．55～－51．37mV0．275cm55%0．225cm45%DO7mg/LORP216．03～75mV0．075cm15%0．425cm85%3。3DOORPFig．3EffectofDOconcentrationonORPdistributioninbiofilmDODO。DO3mg/LDO、DO3mg/L。DO4DO、。DO7mg/L5。2.2DODO3、5、7mg/LCOD52、3732mg/LDOCOD。DODO3、57mg/LNH+4－N23．15、3．023．18mg/L39．92%、92．05%91．63%TN26．55、17．6123．66mg/L46．11%、58．07%51．94%。DO3mg/LNH+4－NDO5mg/L55%45%NH+4－N、TNDO7mg/L15%TN。DO3mg/LDO3hPO3－4－PDO57mg/L0．5h4。4DOPO3－4－PFig．4VariationcurveofPO3－4－PunderdifferentDOinrunningperiodofreactorDODO。DO5mg/L。·71·．watergasheat．comDOSBBR27212。DO5mg/L、B0．00030．0002kgMLSS/kgCOD·d0．4%0．3%。2Tab．2ComparisonofPremovalandsludgeyieldbyvariouscoagulants/mg·L－1TP/mg·L－1/%/kgMLSS·kg－1COD·d－148．290．5289．60．000354．060．6686．80．0002PAC1001．7465．20．00043①DODO3、57mg/L0．163、0．0780．099kgMLSS/kgCOD·d。②DO。DO3mg/LORP－16．68～－63．29mV100%DO5mg/LORP210．55～－51．37mV55%45%DO7mg/LORP216．03～75mV15%85%。③DODO5mg/LCOD、NH+4－N、TN37、3．0217．61mg/LB。1．SBBRJ．200831598－100．2．J．2005262113－116．3SabySDjaferMChenGH．EffectoflowORPinanoxicsludgezoneonexcesssludgeproductioninoxic-settling-anoxicactivatedsludgeprocessJ．WaterRes200337111－20．4AbbassiBDullsteinSRabigerN．Minimizationofexcesssludgeproductionbyincreaseofoxygenconcentrationinactivatedsludgeflocsexperimentalandtheoreticalap-proachJ．WaterRes1999341139－146．5．SBBRJ．200824572－76．1983－。[e-mail]櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵2011－07－12201111、、、、、、。。。。·81·2721．watergasheat．com