化学沉淀法处理超高浓度含磷废水的研究兰吉奎

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,(,510632)[],、pH、、。,,n(Ca)∶n(P)=1.18∶1、pH=9、30min、30min,99.98%,13.68%,,。[];;[]X703.1[]A[]1005-829X(2011)01-0058-03Researchonthechemicalprecipitationtreatmentofwastewatercontainingultra-highconcentrationofphosphorusLanJikui,PanYongzhang(DepartmentofEnvironmentalEngineering,JinanUniversity,Guangzhou510632,China)Abstract:Calciumchloridehasbeenusedforremovinghighlyconcentratedphosphorusfromwastewater.Theinfluencesofvariousfactors,suchasthedosageofcalciumchloride,reactiontime,pH,precipitationtimeonthephosphorusremovalefficiencyareinvestigated.Calciumchloridehasgoodphosphorusremovalcapacity.Thephosphorusremovalratecanreach99.98%,whenn(Ca)∶n(P)=1.18∶1,reactiontime30min,pH=9,andprecipitationtime30min.Thephosphoruscontentintheprecipitateformedis13.68%orover,reachingthehighpurityofphosphoruscontentinphosphorusore.Thetechnologyisofsignificantimportancefortherecycleofwastewatercontainingultra-highconcentrationofphosphorus.Keywords:phosphorus-containingwastewater;calciumchloride;precipitation,、。,21〔1〕。,,〔2-3〕。,〔4〕,〔5〕。,,,,。1,,()、。〔6〕。,:5Ca2++7OH-+3H2PO4-Ca5(OH)(PO4)3↓+6H2O3Ca2++2PO43-Ca3(PO4)2↓Ca2++HPO42-CaHPO4↓,、。,、、、、〔7〕。,,〔8〕。22.1:、、、、、、、,。31120111IndustrialWaterTreatmentVol.31No.1Jan.,201158:pHS-3CpH,;YX-280,;721,;GZX-9140MBE,;JB-2,;SHA-C,。2.2〔9〕;〔10〕:30℃48h,1.0000g,,,。2.3,9500mg/L。,pH,,,,。33.150mL,10%pH9,,30min30min,,1。11,,。1.18∶1,,,n(Ca)∶n(P)=1.18∶1。3.2pH50mL,10%pH,n(Ca)∶n(P)=1.18∶1,30min30min,,2。〔11-12〕,pH2~7,H2PO4-;2pHpH7~12,HPO42-PO43-。pH7,H2PO4-,〔Ca5(OH)(PO4)3〕,OH-,,。pH9,HPO42-PO43-,,;,,。pH,,pH>11,。pH9。3.350mL,10%pH9,n(Ca)∶n(P)=1.18∶1,,30min,,3。3,,。3,30min,,,30min。3.450mL,10%pH9,n(Ca)∶n(P)=1.18∶1,30min,50mL,(),4。2011-01,31(1)594,。4,,,15min5mg/L;30min,,,1mg/L。30min。3.5,:10%pH9,n(Ca)∶n(P)=1.18∶1,30min30min。,,1。11,,1mg/L,pH<9,。3.630℃48h,1.0000g,、1000mL,13.68%~15.82%。7.42%,13.1%〔13〕,。,。4(1):10%pH9,n(Ca)∶n(P)=1.18∶1,30min,30min,1mg/L,pH8.6。99.98%,。(2)13.68%~15.82%,74~81kg,,。(3),,,,。[][1]SaktaywinW,TsunoH,NagareH,etal.Advancedsewagetreatmentprocesswithexcesssludgereductionandphosphorusrecovery[J].WaterResearch,2005,39(5):902-910.[2]GenzA,KornmüllerA,JekelM.Advancedphosphorusremovalfrommembranefiltratesbyadsorptiononactivatedaluminiumoxideandgranulatedferrichydroxide[J].WaterResearch,2004,38(16):3523-3530.[3],,,.[J].,2008,39(1):58-61.[4],,,.[J].,2009,35(4):6-8.[5],,,.[J].,2009,60(9):2346-2350.[6],.[J].,2004,30(5):307-309.[7],.[J].,2006,22(9):93-96.[8]JohanssonL,GustafssonJP.Phosphateremovalusingblastfurnaceslagsandopoka-mechanisms[J].WaterResearch,2000,34(1):259-265.[9].[M].4.:,2002:243-248.[10],,,.[J].,2007,7(3):58-62.[11],,,.[J].,1998,27(2):24-26.[12]CarlssonH,AspegrenH,LeeN,etal.Calciumphosphateprecipita-tioninbiologicalphosphorusremovalsystems[J].WaterResearch,1997,31(5):1047-1055.[13],,,.[J].,2009,41(2):1-5.[](1985—),2008。E-mail:47551114@163.com。:,E-mail:tpyz@jnu.edu.cn。[]2010-12-07()12345/(mg·L-1)1.060.850.721.010.95pH8.748.638.738.558.68,:2011-01,31(1)60

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