35920179EnvironmentalEngineeringVol.35No.9Sep.2017CAST*1231.6100812.1000853.518172CAST、C/N1.4CAST。CASTCAST、、、C/NCOD、A。C/NCASTDOI10.13205/j.hjgc.201709009PILOTSTUDYOFCASTPROCESSTREATINGLOWTEMPERATUREMUNICIPALSEWAGEWITHLOWC/NRATIOZHANGYong1HANJing-long2RANZhi-lin31.SouthwestGeneralMunicipalEngineeringDesign&ResearchInstituteofChinaChengdu610081China2.ResearchCenterforEco-EnvironmentalSciencesofChineseAcademyofSciencesBeijing100085China3.SchoolofTransportationandtheEnvironmentShenzhenInstituteofInformationTechnologyShenzhen518172ChinaAbstractCASTprocesswasusedtotreatthemunicipalwastewaterinacityinnortheastChina.HoweverthemixtureofindustrialandgeothermalwastewaterdirectlydischargedtomunicipalpipeleadingtothelowinfluentC/Nratioof1∶4inwastewatertreatmentplantandwaterqualityfluctuatingfrequently.TheeffluentCODnitrogenandphosphoruscouldn’treachedthechinesewastewaterdischargestandardA.TheCASTprocesswasmodifiedbyoptimizingtheamountoffilleranditspositioncontrollingthesludgeageandincreasingtheloadetc.AdditionallythemodifiedCASTprocesscouldefficientlytreatlowinfluentC/Nratiowastewateratlowtemperatureandhadstronganti-shockability.TheeffluentCODandnitrogenphosphoruscouldreachChina’snationalwastewaterdischargestandardA.KeywordslowC/NratiolowtemperaturebiologicalnitrogenremovalbiologicalphosphorusremovalCAST*2014JCYJ201404181006336592015JCYJ20150417094158014。2017-05-080CASTcyclicactivatedsludgetechnologyCAST。25%、、。ρBOD530.28±9.86mg/LρBOD5200mg/L。、、CAST、。CODY61-678。C/N。9CAST11.1CASTBA3.92m27m3、1∶4.7∶29.8。1.5m3/h、、、、、pH、、15.0±1℃。CAST8h1h1h4h1h1hCAST4h1h1.5h1h0.5hSRT76d。1150mm150mm21m350%。1.21。1Table1DesigninfluentqualityandrealinfluentqualityatlowtemperatureρCOD/mg·L-1ρBOD5/mg·L-1ρSS/mg·L-1ρTN/mg·L-1ρNH+4-N/mg·L-1ρTP/mg·L-1/mg·L-1pHB/CC/N35020030040254——0.57593.330.325021.219.21.410938.10.321.42bio-contactoxidation。CAST3000mg/L24h、、。1.3COD、BOD5、NO-2-N、NO-3-N、NH+4-N、TP、SS、MLVSS、MLSS、SV9-10pHFiveEasypH。22.1Lawrence-McCarty。Lawrence-McCartydXadt=Y-dsd()t-KdXa1Xa=θcYS0-Set1+Kdθc2Xamg/LtHRTd-1dXadtmg/L·dY1mgmgSmg/LS0mg/LSemg/LdSdtmg/L·dKdd-1θcd。1。8h。tθc。、、、Lawrence-McCarty。。CAST54354h1h。2.2CODB/CρBOD5/ρCOD0.32COD。CODCODρCOD25~225mg/L、CODCOD。1—4COD60mg/LCODCOD1。135-6。C/NCOD。------COD——COD---☆---COD。1CASTCODFig.1CODremovalperformanceinpilotCASTprocess1COD。4g/L32~41d49~55dCOD2。。COD52~71CODA50mg/L。B/C、CODCOD。————。2CASTMLSSFig.2VariationofMLSSinpilotCASTprocess2.323。。C/N1.42TNTNA。。52~66CAST4—6。SS。2.4TP7TPTPA。。649CAST——SV/%——SV/%。3CASTFig.3ThesludgesettlingperformanceinpilotCASTprocess—■——●——▲—。4CASTFig.4AmmonianitrogenremovalperformanceinpilotCASTprocess——————。5CASTFig.5VariationofnitrateinpilotCASTprocess。TPρTP0.4mg/LCOD、TP。。31、C/N、B/C、、—■——●——▲—。6CASTFig.6ThetotalnitrogenremovalperformanceinpilotCASTprocess——————。7CASTTPFig.7ThetotalphosphorusremovalperformanceinpilotCASTprocessCAST。2BOD、、、。3B/CCOD。4CASTCASTTN。540%SSCAST。63749B4BMnO2-AC。1GhaediMKarimiFBarazeshBetal.Removalofreactiveorange12fromaqueoussolutionsbyadsorptionontinsulfidenanoparticleloadedonactivatedcarbonJ.JournalofIndustrial&EngineeringChemistry2013193756-763.2RobinsonTMcmullanGMarchantRetal.RemediationofdyesintextileeffluentAcriticalreviewoncurrenttreatmenttechnologieswithaproposedalternativeJ.BioresourceTechnology2001773247-255.3.-PVAD.2016.4.//FentonD.2016.5.D.2016.6.J.2015461230-34.7.、D.2007.8WangXLiY.Synthesisandformationmechanismofmanganesedioxidenanowires/nanorodsJ.Chemistry200391300-306.9ChenRongjiChirayilTZavalijPetal.ThehydrothermalsynthesisofsodiummanganeseoxideandalithiumvanadiumoxideJ.SolidStateIonics199686/87/8811-7.10.-J.200335125-27.11.J.200927220-23.12.J.200932820-22.13JiangLYLiuLXiaoSDetal.Preparationofanovelmanganeseoxide-modifieddiatomiteanditsanilineremovalmechanismfromsolutionJ.ChemicalEngineeringJournal2016284609-619.14HojandievM.Preparationofironoxide-impregnatedsphericalgranularactivatedcarbon-carboncompositeanditsphotocatalyticremovalofmethyleneblueinthepresenceofoxalicacidJ.JournalofEnvironmentalScience&HealthPartAToxic/HazardousSubstances&EnvironmentalEngineering2014497763-769.15.MnO2、J.20072871223-1226.16.J.2005444542-545.17YuJXLiBHSunXMetal.AdsorptionofmethyleneblueandrhodamineBonbaker'syeastandphotocatalyticregenerationofthebiosorbentJ.BiochemicalEngineeringJournal2009452145-151.18.BJ.2013323394-401.19SelvamPPPreethiSBasakaralingamPetal.RemovalofrhodamineBfromaqueoussolutionbyadsorptionontosodiummontmorilloniteJ.JournalofHazardousMaterials20081551/239-44.20.J.2012331147-155.1990-、。798875852@qq.com1974-、、。櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅jhzhao@tcu.edu.cn476TPTP。1MulbargerM.NitrificationanddenitrificationinactivatedsludgesystemsJ.WaterPollutionControlFederation19712059-2070.2BorregaardVR.Experiencewithnutrientremovalinafixed-filmsystematfull-scalewastewatertreatmentplantsJ.WaterScienceandTechnology1997361129-137.3HallinSPellM.MetabolicpropertiesofdenitrifyingbacteriaadaptingtomethanolandethanolinactivatedsludgeJ.WaterResearch199832113-18.4DoldPMurthySTakacsIetal.BatchTestMethodforMeasuringMethanolUtilizerMaximumSpecificGrowt