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[1-2]1。[3]、、、。CSM、、--、、、、。14～16℃CSMpH。11.1ACO-003T6PHS-25C。CSMw(SiO2)=0.9%w(Fe2O3)=0.98%w(Al2O3)=0.69%w(MgO)=0.34%。1.2SS150～300mg·L-1COD400～500mg·L-1PO43--P3～5mg·L-1NH4+-N30～50mg·L-1pH6.5～7.5。14～16℃1LCSM2min、MLSS/COD20min。SSCODHZ-HJ-SZ-0107PO43--PNH4+-N。1Fig.1Chemical-biologicalcoagulationprocess 11211.1500902.()150090CSMpH、。14～16℃-2.0hMLSS/COD=1.5～2.00.04m3·h-140min60mg·L-1。CSMpH。SSPO43--PCODNH4+-N。TQ314.253;X799.3A1000-3770(2011)12-0064-0042011-04-282009ZX07317-0081988－E-mailytzxguoxuan@126.comE-mailhitlwg@163.com3712201112TECHNOLOGYOFWATERTREATMENTVol.37No.12Dec.,201164DOI:10.16796/j.cnki.1000-3770.2011.12.01522.13、、、。2.1.1-。。2.0hMLSS/COD=2.50.04m3·h-140minCSM2。20～60mg·L-1CSMCODPO43--P60mg·L-1。。[4]。2.1.2[4]。MLSS/COD=2.50.04m3·h-140minCSM60mg·L-13。0.04m3·h-1。3COD3.0h。PO43--P0.5～3.0h。COD。。22.0h。2.1.3MLSS/CODMLSS/COD。BOD、、。2h0.04m3·h-140minCSM60mg·L-1MLSS/COD4。4CODMLSS/CODCODMLSS/COD=1.5。CODCODCOD2COD3Fig.3RemovalefficiencyofCODandPO43--Patdifferentsludge-activating-time0.00.51.01.52.02.53.03.54.0020406080100% h 2CSMFig.2RemovalefficiencyofCODandPO43--PatdifferentdosageofCSM020406080100120020406080100%CSMmgL 4MLSS/CODFig.4RemovalefficiencyofCODandPO43--PatdifferentMLSS/COD123456020406080100%MLSS/COD 65COD。。PO43--PMLSS/COD。。CSM。2.1.4-。。2hMLSS/COD=1.540minCSM60mg·L-15。5COD0.04m3·h-1。PO43--P0.02m3·h-10.04m3·h-1PO43--P。CODPO43--PCOD。0.04m3·h-1。2.1.5-。30min。2hMLSS/COD=1.50.04m3·h-1CSM60mg·L-16。6CODPO43--P2COD60minPO43--P30～50minCOD110minPO43--P70～80min。。140min。2.0hMLSS/COD=1.5～2.00.04m3·h-140min60mg·L-1。CODPO43--P100～150mg·L-10.1mg·L-1。2.2pH[5-6]、2。2.2.1pHpHpHSS、COD、PO43--PNH4+-N7。7pH。SSPO43--PpH5Fig.5RemovalefficiencyofCODandPO43--Patdifferentaerationmixingintensity0.020.040.060.080.10020406080100% m h 6Fig.6RemovalefficiencyofCODandPO43--Patdifferentreactiontime020406080100120140020406080100%min 7pHFig.7RemovalefficiencyofdomesticwastewateratdifferentpHvalueofrawwater24681012020406080100%pH 371266pH5～1095%99%CODpH3～6、7～810NH4+-NpH4。CSMpH。2.2.2320℃15℃8℃。8。8。SSPO43--P95%99%CODNH4+-N20℃15℃8℃。。SSPO43--PCODNH4+-N。314～16℃CSM2.0hMLSS/COD=1.5～2.00.04m3·h-140min。CSMpH。。SSPO43--P95%99%。CODNH4+-N20℃15℃8℃。[1],,,.[J].,2006,22(3):32-35．[2]XiaSQ,WangF,FuYG,etal.Biodiversityanalysisofmicrobialcommunityinthechem-bioflocculationtreatmentproccess[J].BiotechnolBioeng,2005,89(6):656-659．[3],,.-[J].,2000,16(7):29-32.[4].-[D].:,2006:46.[5],.CASS[J].,2002,20(2):16-18.[6],,,.[J].,2007(4):54-55.8Fig.8Removalefficiencyofdomesticwastewateratdifferenttemperatureofrawwater020406080100 %SSCODPO -PNH -NSTUDYONOPTIMIZATIONOFCHEM-BIOLOGICALCOAGULATIONPROCESSTREATINGDOMESTICWASTEWATERGuoXuan1,LiWeiguang1,2,TianWende1（1.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China;2.NationalEngineeringResearchCenterofUrbanWaterResources,Harbin150090,China）Abstract:Anewtypeofcoagulant-composite-silicate-magnesium-coagulant（CSM）wasusedinchem-biologicalcoagulationprocesstotreatdomesticwastewater,anditsoperatingconditionswereoptimized.Furthermore,itsadaptabilitytopHvalueandtemperatureofrawwaterwasalsoinvestigated.Theresultsshowedthat,theoptimisticchem-biologicaloperatingconditions:sludge-activating-time,2.0h;MLSS/COD,1.5～2.0;intensityofaerationmixing,0.04m3·h-1andreactiontime,40minandCSMdosage,60mg·L-1atthetemperatureof14～16℃.Chem-biologicalcoagulationprocesscouldexhibitwellatawiderangeofpHvalue.SSandPO43--Premovalhadlittlecorrelationwiththetemperatureofrawwater,butCODandNH4+-Nremovaldecreasedwithit.Keywords：domesticwastewater;chem-biologicalcoagulationprocess;composite-silicate-magnesium-coagulant67