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©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(,400045)://NaOH/,,120160m3/d,pH3.55.5Mn550700mg/LSS200260mg/L,pH6.57.5Mn0.81.5mg/LSS516mg/L,(GB89781996),1875,1.73/m3:;;;:X703.1:C:1000-4602(2007)10-0062-03StudyonChemicalPrecipitation/CoagulationSedimentationProcessforSequencingBatchTreatmentofElectrolyticManganeseWastewaterHEQiang,WANGRen2chao,CHAIHong2xiang,HANQiao(MOEKeyLabofThreeGorgesReservoirRegionsEco2Environment,ChongqingUniversity,Chongqing400045,China)Abstract:Alimeneutralization/plateandframefilterpress/NaOHreactionprecipitation/coagula2tionsedimentationprocesswasusedforsequencingbatchtreatmentofmanganese2containingwastewaterfromelectrolyticmanganeseplant.Theresultsshowthatwhentheinfluentflowrateis120to160m3/d,pHis3.5to5.5,concentrationofMnis550to700mg/LandSSis200to260mg/L,theeffluentpHis6.5to7.5,concentrationofMnis0.8to1.5mg/LandSSis5to16mg/L.TheeffluentqualitycanachievethefirstclassrequirementofIntegratedWastewaterDischargeStandard(GB8978-1996).Theinvestmentindexofonetonis1875yuanandoperationcostis1.73yuan/m3.Keywords:manganese2containingwastewater;chemicalprecipitation;coagulationsedimenta2tion;sequencingbatchoperation4108t,4,200583104t,1t100m3[1],,,2005,,[2],,pH=9.599.76%[3]PAC,,pH=8.510,397mg/L0.2mg/L,,,[4]26231020075CHINAWATER&WASTEWATERVol.23No.10May2007©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:3011:30,120160m3/d160m3/dpH3.55.5,Mn550700mg/L,SS200260mg/L,(GB89781996),pH69Mn2mg/LSS70mg/L2,,++NaOH+,11Fig.1Flowchartofmanganese2containingwastewatertreatmentprocess211,160m3,40m3,,pH110.2,1h,NaOHNaOH,pH120.2,1.5h0.1%PAM2.5mg/L10min,2h,,pH7.00.5,10%PAC200mg/L,1.0h0.1%PAM2.5mg/L10min2hNaOH,,212,,,,95%,NaOH,,,,,213()121()Tab.1Mainstructures(LBH)/(mmm)/7.06.04.013.53.54.01NaOH3.53.54.013.53.54.012Tab.2Mainequipment/=40r/min,P=1.5kW3=20r/min,P=0.55kW3Q=80m3/h,H=80kPa,P=3.5kW1Q=20m3/h,H=80kPa,P=1.5kW2S=50m2,P=5kW13,,,10%()NaOH36:/2310©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(mgL-1)60818.29.11.4pH3.811.913.27.3SS/(mgL-1)246123,(GB89781996)430,1875/m344Tab.4ChemicaldosageduringoperationmgL-150%12000NaOHNaOH360PAM2.5490PAC200PAM2.5:1.26/m3,0.14/m3,0.33/m3,1.73/m35Mn550700mg/LSS200260mg/LpH3.55.5,NaOH,Mn0.81.5mg/LSS516mg/LpH6.57.5,(GB89781996)+NaOH+,pH,,,:[1],,.[J].,2004,11(1):18-19.[2],,,.[J].(),1997,18(4):60-62.[3].[J].,1995,14(3):36-38.[4],,./[J].,2002,20(1):25-27.:(023)6512098013608319163E-mail:hq0980@126.com:2007-01-2220062006,,()(1,:100),200624(),,2006,::106301201090050868:,:5221300070,,:022-27832819:()462310