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,,,,(,317000),。、、、。,。[1]。、,。,,,。,,,,。[2],[3]。,、()3。---GB8978—1996《》,:,CaCl2。CaCl2pH,pH、n(N)∶n(P)、n(Mg)∶n(P)。,(P)374.50mg/L,pH10.0,CaCl25g/L,98%;pH10.0,n(N)∶n(P)=1,n(Mg)∶n(P)=1,97%。:;;;;:X787.031:A:%1009-2455(2011)04-0023-04Treatmentofhigh-concentrationphosphorus-containingpharmaceuticalwastewaterCHENChao-chao,JIANGSheng-tao,WANGYin-feng,DINGJia-yin,YINGXiu-jing(SchoolofLifeScience,TaizhouUniversity,Linhai317000,China)Abstract:Takingthehigh-concentrationphosphorus-containingwastewaterfromapharmaceuticalcompanyinTaizhouastheresearchobject,theeffectsofCaCl2sedimentationandstruvitecrystallizationonitstreatmentwereinvestigatedrespectively.TheinfluencesofCaCl2dosageandpHvalueontotalphosphorusremovalwerediscussed;besides,theeffectsofpHvalue,n(N)∶n(P)andn(Mg)∶n(P)onstruviteformationwerealsostudied.Theresultsofthetestshowedthat,whenthemassconcentrationofthetotalphosphorus(calculatedbyP)intheinfluentwaterwas374.50mg/L,thepHvaluewas10.0,theCaCl2dosagewas5g/L,theremovalrateofphosphorusreached98%.Undertheconditionthat,pHvaluewas10.0,n(N)∶n(P)=1,n(Mg)∶n(P)=1,97%ofphosphoruschangedintostruvite.Keywords:phosphorus-containingwastewater;phosphorusremoval;calciumsalt;phosphorusrecovery;struvite:2011-04-14;:2011-06-23INDUSTRIALWATER&WASTEWATERVol.42No.4Aug.,2011·23·INDUSTRIALWATER&WASTEWATERVol.42No.4Aug.,20111Fig.1Reactorstructure2CaCl2Fig.2EffectofCaCl2dosageonphosphorusremoval23456CaCl2/(g·L-1)/%98.598.097.597.096.53pHFig.3EffectofpHvalueonphosphorusremoval8.08.59.09.510.010.511.011.5pH/%1009590858075。,,,。CaCl2,CaCl2pH,2。11.1(100mL),1。1.2。,374.5mg/L,84.64mg/L,CODCr7360mg/L,pH4~5。1.3,pH;CaCl2NH4Cl、MgCl2·6H2O,,,,,,。1.4《》[4]。pHpH,。22.12.1.1CaCl2pH10.0,10min,CaCl2,2。n(Ca)∶n(P)=1.67,,n(Ca)∶n(P)[5]。2,CaCl22~5g/L,。5g/L,CaCl25g/Ln(Ca)∶n(P)=3.73。2.1.2pH、CaCl25g/L,pH,3。pH。pH,。0.1mg/L,pH10.5[6]。,pH9.0~10.5,CaCO3,,[7]。3,pH8.0~10.0pH,pH8.5~10.0。pH9.0~11.590%。pH10.0~11.0,,,,·24·,,,:4pHFig.4EffectofpHvalueonstruviterecovery8.08.59.09.510.010.511.011.5pH/%10090807060505n(Mg)∶n(P)Fig.5Effectofn(Mg)∶n(P)onstruviterecovery1234567n(Mg)∶n(P)ρ()/(mg·L-1)100806040200 /%100806040200pH>11.0,,[8]。,pH9.5~10.0。2.2、(MgNH4PO4·6H2O)。,,。Mg2+(Mg)、NH4+(N)PO43-(P),Ksp,。[9]:Mg2++NH4++PO43-+6H2O→MgNH4PO4·6H2O(1)MgCl2·6H2O、CaCl2、NH4Cl,(2)、(3)。5Ca2++3PO43-+OH-=Ca5(PO4)3OH↓(2)3Ca2++2PO43-=Ca3(PO4)2↓(3)2.2.1pH,n(N)∶n(P)∶n(Mg)1∶1∶1,pH,4。H+,pHNH4+PO43-,pH。,,pH10.3,,pH,[10]。[11]X-,pH9.0~10.0,pHMg(OH)2。MAPpH9.0~10.0。4,pH8.0~9.5pH,90%,pH10.0,,,95%。pH9.5~10.0。2.2.2,100mL,pH11.0,n(N)∶n(P)=1,n(Mg)∶n(P)。5。n(Mg)∶n(P)>1,。。,。Slough,,n(Mg)∶n(P)1.3∶1[12-14]。5,n(Mg)∶n(P)>1,,,97%。,,,。,n(Mg)∶n(P)=1。2.2.3,100mL,pH11,n(Mg)∶n(P)=1,。n(N)∶n(P)。6。P.Battistoni[15],PO43-、Mg2+、Ca2+NH4+,4;NH4+、PO43-Mg2+1∶1∶1,PO43-[16]。6,n(N)∶n(P)>1,NH4+,·25·INDUSTRIALWATER&WASTEWATERVol.42No.4Aug.,2011 6n(N)∶n(P)Fig.6Effectofn(N)∶n(P)onstruviterecovery12345n(N)∶n(P)ρ()/(mg·L-1)100806040200/%10080604020096%,,n(N)∶n(P)>1。,n(N)∶n(P),,,,n(N)∶n(P)=1。3(1),,,,。,,。(2):pH9.5~10.0,CaCl25g/L(n(Ca)∶n(P)=3.73),97%,。(3):,pH9.5~10.0,n(N)∶n(P)=1,n(Mg)∶n(P)=1,97%。(4),,。:[1],,.[J].,2010,36(8):16-20.[2],,,.[J].,2009,35(4):6-8.[3],,,.[J].,2009,60(9):2346-2350.[4]《》.[M].:,2002.[5],,,.[J].,2009,25(15):82-85.[6],,,.[J].,2003,22(1):52-55.[7]BashanLE,BashanY.Recentadvancesinremovingphosphorusfromwastewateranditsfutureuseasfertilizer(1997-2003)[J].WaterResearch,2004,38(19):4222-4246.[8],.[J].,2011,30(1):58-60.[9],,,.[J].,2008,39(1):58-61.[10]SongYH,YuanP,ZhengBH,etal.Nutrientsremovalandrecoverybycrystallizationofmagnesiumammoniumphosphatefromsyntheticswinewastewater[J].Chemosphere,2007,69(2):319-324.[11],,.MAP[J].,2010,33(1):170-173.[12]Valsami-JonesE.PhosphorusinEnvironmentalTechnology[M].London:IWAPublishing,2004.[13],,.MAP[J].,2008,39(6):33-36.[14],,,.[J].,2010,30(5):897-907.[15]WastewaterPlanningUsersGroup.CodeofPracticefortheHydrau-licModelingofSewerSystems[M].theUK:WaPUGPublishing,2002.[16],,,.Mg2+、PO43-NH4+[J].,2007,23(19):6-14.:(1989-),,,,()yueduji2011@163.com。micalEngineeringJournal,2009,155(1-2):1-18.[15],,.-[J].,2010,30(1):1-7.[16].[J].,2010,41(4):50-53.[17],.[A].[C].:,2004.1-14.[18].()[M].:,2009.:(1981-),,,,,,()010-82368326()zhangchao_seu@163.com。(11)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!·26·
本文标题:高含磷制药废水处理试验研究陈超超
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