HAAAMCO污泥减量工艺的微生物与污泥特性唐良建

HA－A/A－MCO1121．4000842．400016、HA－A/A－MCO。。。、23。0．112gMLSS/gCOD。HA－A/A－MCOSOUR。HA－A/A－MCOX703A1000－4602201111－0025－05CharacteristicsofMicrobeandSludgeinHA-A/A-MCOSludgeReductionProcessTANGLiang-jian1ZENGYao1ZUONing21．EnvironmentalMonitoringStationofDadukouDistrictChongqing400084China2．SouthwesternHydraulicEngineeringResearchInstituteforWaterwayChongqingJiaotongUniversityChongqing400016ChinaAbstractInordertoimprovephosphorousandnitrogenremovalinsludgereductiontechnologiesanadvancedprocesscombiningexcesssludgereductionandphosphorousandnitrogenremovalwasdevel-opednamelythehydrolysisacidification－anaerobic/anoxic－multistepcontinuousoxicHA-A/A-MCOprocess．Thevariationofmicrofaunaspeciesandsludgecharacteristicswereanalyzedtorevealthesludgereductionmechanism．Theresultsshowthateffectivebiofaciesseparationandthepropagationofhighermicrobescanberealizedinaerationtankandthelowersludgeyieldcanbeachievedbymicrobialpredation．WhenthesystemoperatessteadilyspeciesandquantitiesofmicrobesineachreactiontankshowthefollowingobviousvariationcharacteristicsThespeciesandquantitiesofmicrobesinanaerobictankanoxictankandbacterialculturetankareequivalentbasicallyfreeswimmingciliatesarepredomi-nantandveryfewmetazoansexistFixedciliatesarepredominantinoxictankNo．2andtheamountsofrotiferandAeolosomahemprichiincreasegraduallyFixedciliatesandmetazoanrotiferandAeolosomahemprichiarepredominantinoxictankNo．3．Sludgeyieldshowsadowntrendwithbiofaciesseparationinaerationtankandtheincreasingamountofhighermicrobesandfinallystabilizesat0．112gMLSS/·52·271120116CHINAWATER＆WASTEWATERVol．27No．11Jun．2011gCOD．BesideslowerSOURofHA-A/A-MCOsystemiscausedbylowerorganicloadbutnotbymi-crobialpredation．KeywordsHA-A/A-MCOprocesssludgereductionmicrobialpredationbiofaciessepa-rationlowsludgeyield、1～3HA－A/A－MCO4A2/O。、HRTDO、→→→。。HA－A/A－MCO。11.1HA－A/A－MCO1。1HA－A/A－MCOFig．1FlowchartofHA-A/A-MCOprocess、、、、、。PVC50LHRT2．5h30LHRT1．5h15LHRT0．5～0．75h30LHRT1．5h40LHRT2h。、40%。HRT1hHRT1h。VFA。VFAVFA。13%56。、、、、、、。20L/hDO0．5～1．0、1．0～1．5、1．0～1．5mg/L、、、40%、150%、100%2%。60d5100～5800mg/L0．18～0．21kgCOD/kgMLSS·d。1.2、、·62·2711．watergasheat．com、、、NH4Cl、KH2PO4Na2CO3COD297～412mg/LTP7～11mg/L23～42mg/LTN31～57mg/LpH7～8。《》4。＞100μm10μL。5。22.11022。2Fig．2Speciesandquantityofmicrobesineachtank21、、、。1、2、32、13150/mL400/mL。。0．112gMLSS/gCOD12、3HRT、DO→→→。。2.210—123。3Fig．3QuantityofmicrobesinMCO3。、11～21、2、·72·．watergasheat．comHA－A/A－MCO27113、50/mL100/mL。1、23。3～412、50/mL200/mL3、150/mL250/mL。1112、3“+”“++”23。2、3→→23、。1、Tab．1VariationofpreponderantmicrobeprotonemaandcharacterofsludgeofMCOandsludgeyieldofHA-A/A-MCOprocess1～23～4123123、、、、、、、、、、、、－－－－+++Yobs/gMLSS·g－1COD0．3010．1965～67～8123123、、、、、、、、、、、、、、、、+++++－++Yobs/gMLSS·g－1COD0．1240．112Eikelboom574－、+、++、。5～6123、、。。+、++、++。7～81、、1900/mL2、3、、800/mL1400/mL。3150400/mL。。1Yobs0．301gMLSS/gCOD0．112gMLSS/gCOD。2.3·82·2711．watergasheat．comSOUR。SOUR21．1mgO2/gSS·h13．2mgO2/gSS·h。“”SOUR4。HA－A/A－MCOSOUR。4SOURFig．4InfluenceofCODincreaseonSOUR3①HA－A/A－MCO、12、3。②123。0．112gMLSS/gCOD。③HA－A/A－MCOSOUR。1．LSP＆PNRJ．200821105－109．2．J．20034144－52．3LowEWChaseHA．Reducingproductionofexcessbio-massduringwastewatertreatmentJ．WaterRes19993351119－1132．4．HA－A/A－MCOJ．201026516－2025．5．HA－A/A－MCOJ．2009251529－33．6．LSP＆PNRJ．200723335－39．7EikelboomDHVanBuijsenHJJ．MicroscopicSludgeInvestigationManualM．DelftTNOResearchInstitu-te1983．1957－。[e-mail]2011－01－07·92·．watergasheat．comHA－A/A－MCO2711