北京航天城污水处理厂CASS法工艺调试及运行

(1),,,(2)15min15min,,(3)(FeSO47H2O),,m3(4),,:712035:[phone]:1999O4O20CASS,,CASSCASS0,199612,19984,7297200m3/d,14400m3/d,8115%1810%015%,,:()11COD/mg/LBOD5/mg/LSS/mg/LpH/mg/L350250220615815518501530610815360205061081541111,,(CyclicActivatedSludgeSystem,CASS)1975,,1994,1121,,,,,CASS,,,1(m)CASS,SBR10Vol125No181999,,,,CASS24m24m,19125m3175m,4,,5m,415m(113m,117m),1134m,1/3,CASS22CASS2,,,CASS,24h,,,CASS;,:SVMLSSSVICODBOD5,,SVI=80mL/g100mL/g,SV=18%20%,MLSS=1200mg/L1800mg/L,,,,,:,CASS,211CASS,,CASS,,,,,,,,:10s,30s,10s,30s,,,,,,,,212CASS,CASS4h,2h,1h,1h,,,,4h,115h,1h,1h,015h213CASS,,,(PLC)Vol125No18199911,4CASS1();1,,,214,CASS,:CODCr=70mg/L80mg/L,BOD5=30mg/L35mg/L,pH=618715;CODCr=20mg/L,BOD5=7mg/L,SVI=80mL/g100mL/g,SV=18%20%,pH=618715,CASS,,,,CASS3CASS,CASS:(1),,,,10%25%,20%35%(2),,,,,10%25%,,(3),(4),,SBR,CASS,(),[1],,,,,,,CASS,(5)CASS,,CASS,:PWM,,,;;,;7200m3/d,58,30(6),1..,1995,15(2):131134:10002847022:[phone](O):1999O3O3199925,6,1999712Vol125No181999WATER&WASTEWATERENGINEERINGVol125No18August1999CONTENTSBiologicalPretreatmentofSlightlyPollutedRawWaterinHuinanWaterworks,ShanghaiZhangHuaetal(1)Abstract:ThetributariesofHuangpuRiverhavebeenheavilypollutedandtheinletwaterofPudongWaterworksisgoingtodeterioration.InordertoimprovethequalityofdrinkingwaterabiologicalpretreatmentprocesswasaddedtothenewdesignedHuinanWaterworksonthebasisofscientificresearchesforyears.Thedesignparametersandessentialsarepresentedinthispaper.StudyonMembranePollutionofUndergroundWaterPurificationZhaoGuangyingetal(5)Abstract:Thestructureandcharacteristicsofinorganicscaleformedonthesurfaceofmembraneinmagnetictreat2ment2ionexchangesofteningprocesshavebeenexaminedbyscanningelectronicmicroscope(SEM)andenergyspec2trometer(ES).Alsothemorphosisandelementalcompositionofthescalearediscussedandtheselectablepre2treatmenttechniquesandchemicalcleaningprocessesareevaluated.ProcessDesignofCrRemovalforDrinkingWaterXuLiang(8)Abstract:ACrremovalprocessfordrinkingwaterwasdesignedandappliedintheXianyangInternationalAirportinXianatthebeginningof1990s.Thequalityoftheoutputwaterofthisfacilityisrightfairandstableintheforgoingeightyearssinceitwasputintooperation.CASSWastewaterTreatmentProcessforBeijingSpaceFlightCenterWangShouzhongetal(10)Abstract:Theengineeringsituationandtechnologicalprocessespeciallytheset2upandtrialrunningofBeijingSpaceFlightCenterWTParepresented.Finallysomepersonalviewsonthespecialcharactersofcyclicactivatedsludgesystem(CASS)processaredescribedpractically.ApplicationofSelf2PrimingJetAeratorforOxidationDitchZhuMouxi(13)Abstract:Thedualfunctiondemandstoaerationdevicesforoxidationditchareclarifiedandthemechanismofbothstirringandflowdrivingofself2primingjetaeratoraredescribed.Thefeasibilitytoadopttheself2primingjetaeratorforsmallandmedium2sizedoxidationditcheshasbeendiscussed.OntheSchemestotreatUrbanRefuseLand2fillingLeachingLiquidShenYaoliangetal(18)Abstract:Twokindsofprocessschemestotreaturbanrefuselandfillleachingliquidnamelythein2siteorout2sitetreatmentsarediscussedandcompared.Finallyaprocesswithin2sitephsico2chemicaltreatmentinthelandfillyardandout2sitebiologicaltreatmentcombinedwiththeurbanwastewateroutsidethelandfillyardhasbeenrecognizedasmoste2conomicalandreasonableforLeachingliquidtreatmentinthiscountry.PrioronOptimizingOperationofWaterworksDuYuzhuetal(22)Abstract:Theessentialitytooptimizetheoperationofwaterworksandmainfactorswhichinfluencethespecificcostofwateroutputaredescribed.Consequentlythemethodstoimplementoperationaloptimizationbyrearrangementofabovementionedinfluencingfactorsandtheeffectofoptimizationarepresented.SludgeDisposalinSludgeDryingBedofWaterworksChengXietal(25)Abstract:Theoperationandinfluencefactors,designmethodandprincipleofoptimalmanagementofsludgedryingbed(SDB)aresummarizedanddiscussed.OnthebasisoftheevaluationonthefeatureandprospectofSDBdisposaltheauthorsconsiderthatSDBisworthyasaneconomicalandpracticaloperationforsludgedisposalinwaterworksinthiscountry.