CASS1112221.4300742.528000CASS。TP0.4mg/LTNTNTN《》GB18918—2002A。CASSX703C1000-4602201217-0121-03EffectofOperationModeofCASSProcessonDenitrificationEfficiencyCHAICheng-shan1TAOTao1LUOFeng1XUTing-guo2CUISong-yang2LEIMing21.SchoolofEnvironmentalScienceandEngineeringHuazhongUniversityofScienceandTechnologyWuhan430074China2.FoshanWaterGroupCo.Ltd.Foshan528000ChinaAbstractThecharacteristicsofCASSprocesswithaseparateanaerobiczonewereanalyzed.TheoperationmodeofCASSprocessintreatinglow-concentrationdomesticsewageinGuangdongProvincewasinvestigated.Settingupaseparateanaerobiczoneensuredsufficientanaerobictimeandadoptingin-termittentreturnsludgeensuredMLSSintheanaerobiczone.TheaverageconcentrationofeffluentTPwas0.4mg/L.TheincreasedconcentrationofinfluentTNresultedinincreasedconcentrationoftheef-fluentTN.ByplacinganoxiczonebeforeaerobiczonetheeffluentTNconcentrationmetthefirstlevelAcriteriaspecifiedinDischargeStandardofPollutantsforMunicipalWastewaterTreatmentPlantGB18918-2002.KeywordsCASSanaerobicprocessoperationmodedenitrificationCASSSBRSBR、、、CASS。CASSSBRCASSSBRCASS。CASSSBRSBRSBR1。CASSTN。11.120m3A、B、CD41。A/3A1、A2、A3。BD、·121·281720129CHINAWATER&WASTEWATERVol.28No.17Sep.2012、A。AB、CD。A、B、CD。。A2、A3、B、D4CASS。1Fig.1Schematicdiagramofpilot-scaleequipment1.2COD65~244mg/LNH+4-N15~35mg/LTP1.4~4mg/LTN15~40mg/L。1.3CODNH+4-NTPTN—NO-3-NNO-2-NN-1--。2CASS2.1CASS。SBR。10minSBR。SBR。SBR30min。SBR。SBR1m1/31.5。45min10000mg/L5min5min。1。1CASSTab.1MatrixsettingofCASS/minABD30、155、355、30、155、355、180min8m3/h。B、D、、、45min。1000~1500mg/L。2.2TPTPTP0.4mg/L《》GB18918—2002A。TP。CASS2.25h。2.3COD244mg/L65mg/LCOD100mg/L。CASSSBR。TN、22.54、17.53mg/LTN14.88mg/L《》GB18918—2002A4.26、·221·2817.watergasheat.com6.57mg/LTN33.31、23.93mg/LTN16.13mg/L2.80、10.27mg/L。TNTNTN。TNNO-3-N。1mgNO-3-NCOD2.86/1-YHYH。ASM1YH0.6721mgNO-3-N8.67mg。CODNO-3-N。COD103mg/LCOD51mg/LCOD90%。COD、。2。2CASSTab.2MatrixsettingofimprovedCASS/minABD30、155、355、30、1515455、355、SBR1/32/3NO-3-NNO-3-NNO-2-NN2TN。TN14.34mg/L《》GB18918—2002A。3①CASS。1000~1500mg/L。②CASSTP0.4mg/L。③CASSTNTN14.88mg/L《》GB18918—2002A。④TN30mg/LTNTNTNNO-3-N。TN14.34mg/L。1.CASS、UNITANK、J.201026245-46.2HenzeMGradyCPLJrGujerWetal.ActivatedSludgeModelNo.1.IAWPRCScientificandTechnicalReportNo.1M.LondonIAWPRC1987.E-mailchchsh522@163.com2012-03-12·321·.watergasheat.comCASS2817