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512Vol．5No．12201112ChineseJournalofEnvironmentalEngineeringDec．2011CAST12121212121．3003842．300384CAST3CASTCAST3。30.48、0.150.04mg/L90.03%、96.91%99.07%CAST381.1%、77.1%79.7%。CASTX703A1673-9108201112-2697-06ResearchontheeffectofdifferentoperationmodesonphosphateremovalperformanceofCASTprocessZhangZhimou12YuJingjie12WangShaopo12LiuYanhui12SunLiping121．DepartmentofEnvironmental＆MunicipalEngineeringTianjinInstituteofUrbanConstructionTianjin300384China2．TianjinKeyLaboratoryofWaterQualityScienceandTechnologyTianjin300384ChinaAbstractThewastewaterwastreatedbythreedifferentoperationmodesofcyclicactivatedsludgetechnol-ogyCASTthelawofthephosphateremovalineachcyclewasinvestigated．OnthisbasistheproportionofthephosphateaccumulatingorganismsDNPAOstothephosphateaccumulatingorganismsPOAsineachop-erationmodesystemwasmeasuredandcompared．TheresultsshowedthatafterthestabilityoftheCASTsystemtheaveragephosphateconcentrationsofeffluentunderthreeoperationalmodeswere0．480．15and0．04mg/Lrespectivelytheaverageremovalratesofphosphorouswere90．03%96．91%and99．07%separately．ThephosphorousremovalinCASTsystemwasaccomplishedinthejointactionofthePAOsandDNPAOsthera-tiosbetweenDNPAOsandPAOsinthethreeoperationmodeswere81．1%77．1%and79．7%respectively．KeywordscyclicactivatedsludgetechnologyCASTphosphorousremovaldenitrifyingphosphateac-cumulatingbacteria508081282008ZX07209-00610JCYBJC053002010－07－172010－08－281986～。E-mailzzm19860929@163．comCASTSBR、、、、1。CASTCAST、、CAST、、、2-4。3CAST3。511.1CAST28.8L24.96L3.84L。1。1CASTFig.1SchematicdiagramofCASTreactor1．2、、、、、。NaHCO3。。1．3CAST14、、、。334h620%332。12h2h1h1h。21h0．5h1．5h1h1h。31h0．5h0．5h0．5h0．5h1h1h。3、、、、。32。1．41COD300mg/L50mg/L5mg/L。NaHCO3600mg/L。SRT13d4000mg/L0.2m3/hDO2～3mg/L20%。。2。2Fig.2SchematicdiagramofcyclemodesofCASTreactor896212CAST。33PAOsPAOsPAOs“”5。。2LSBR32L。COD15000mg/L10mL3h22SBR2SBR500mgPO3－4-P/L10mLSBR0.2m3/hSBR2000mgNO－3-N/L10mL。2SBRCAST。2CAST。1．5DOWTW340iCODNO－3-NPO3－4-PMLSSMLVSS。22.13、41、2、3。170d71～811.78mg/L830.48mg/L0.18mg/L。183。237d38～5240。70700.15mg/L0mg/L。270d。3300.04mg/L0g/L99.07%。3321。1。39962531。5～7。2．2511Fig.5Changesofphosphateandnitrateconcentrationsinatypicalcycleunderthefirstopreationmode180～240min、5～7。P-PPHBPHB、5。510～30min1.89mg/L3.51mg/L7.04mg/L1.71mg/L。2h。30～120min6.53mg/L。30～120min。120～180min3.4mg/L2.7mg/L。120～180min6.53mg/L180min4.77mg/L。90minPHB、6。。90～120min。120～180min。0～120min120～180min。6a20～30min0mg/L2.31mg/L6.48mg/L1。30～60min。60～150min150min10.87mg/L。150～180min。60～180min180min0.08mg/L。6b20～30min1.35mg/L1.84mg/L。30～120min0.3mg/L。120～180min。0～30min2.64mg/L0mg/L。30～120min120min12.91mg/L。120～180min12.90mg/L。007212CAST621Fig.6Changeofphosphateandnitrateconcentrationsinatypicalcycleunderthesecondopreationmode7a30～30min0.24mg/L1.02mg/L16.68mg/L30～120min5.66mg/L120min0.47mg/L120～180min。7b30～30min0.4mg/L7.10mg/L9.38mg/L。30～60min4.20mg/L1.86mg/L。60～90min。90～120min731Fig.7Changeofphosphateandnitrateconcentrationsinatypicalcycleunderthethirdopreationmode0.01mg/L120min8.25mg/L。120～180min0.90mg/L。8。823。11.755mgP/h2.163mgP/h1.755/2.163=81.1%。22.186mgP/h2.836mgP/h2．186/2．836=77.1%。32.425mgP/h3.042mgP/h2.425/3.042=79.7%。1072583Fig.8Curvesofphosphorusreleaseanduptakeunderthreeoperationmodes311、2、31、2、30.48、0.150.04mg/L90.03%、96.91%99.07%。33。231、2、381.1%、77.1%79.7%。1．CAST．200319189-912．．2004WangXingbo．Applicationofcyclicactivatedsludgesystemforcitywastewatertreatment．HarbinMaster’sDegreeThesisofHarbinInstituteofTechnology2004inChinese3．CASS．200319234-354．CASS．200612-13ZhangGuozhu．Applicationandoptimizationofcyclicacti-vatedsludgesystemCASSformunicipalwastewatertreat-ment．HarbinMaster’SDegreeThesisofHarbinInstituteofTechnology2006inChinese5KubaT．VanLoosdrechtM．C．M．Phosphorusremov-alfromwastewaterbyanaerobic-anoxicsequencingbatchre-actor．Wat．Sci．Tech．1993275-6241-2526．CAST．200916126-1272072