废水中回收磷技术研究进展姜世坤

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--●Vol.27,No.820098ChinaResourcesComprehensiveUtilization、,。。,,[1],《》(GB8978-1996)《》(GB18918-2002)。,。。11.1HAP(,),,、pH。,HAPCa5OH(PO4)3OH,,K=10-55.9(25℃)。,,,,,。(1)(2):5Ca2++7OH-+3H2PO4-→Ca5OH(PO4)3+6H2O(1):5Ca2++CO32-→CaCO3(2)Ca(OH)2CaO,Ca5OH(PO4)3[2],Ca2+,CaCO3,[3]。,,(CaCO3)1.4~1.5[4]。1.2HAP1.2.1pHCa(OH)2pH,pH。pH9.5,80%,,5。,。10,HAP。Ca(OH)2pH,1LpH7.59.5,Ca(OH)2210mL,,,、:2009-04-05:2008ZX07207-005。:(1984-),,,,。,,,(,130021):,,、、。:;;(HAP);(,MAP):X703.1:A:1008-9500(2009)08-0035-03AdvancesinPhosphorusRemovalfromWasteWaterJiangShikun,YinJun,ZhaoYuxin,ZhangJukui(TheKeyLaboratoryofJilinProvinceWaterPollutionControlandResourceUtilization,Changchun130021,Chian)Abstract:Thisarticleintroducesandanalyzesthreekindsofmethodswhichphosphorusrecoveryfromphosphoricwaterinpresentlydomesticandforeignarestudyedandapplicated.Itnarratestechnicalprinciple,maincraftinfluencingfactorsandresearchdevelopmentofcalciumphosphate,molysite;calorizationprecipitationandstruvite.Keywords:phosphorusrecovery;chemistryprecipitationmethod;calciumphosphate(HAP);struvite(magnesiumammoniumphosphate,MAP)35--●。Ca(OH)2,NaOH,5%。NaOH,,,1LpH7.59.5,1mol/L(40mg/L)NaOH10mL。1.2.2pH,CO2,pHCO2,、。30min,pH,10min,pH8.4,30minpH8.6,,pH1。pH8.6,50%,,pH9.5>80%。,pH,。pH,,。。2Fe3+、Al3+2.1Fe3+Al3+。,(3)、(4)、(5)(n=0,l,2)[4]::Me3++HnPO43-n→MeP04+nH+(3):Me3++3HCO3-→Me(OH)3+3CO2(4)Me3++3OH-→Me(OH)3(5)2.2,,pH。,pH,pH,Me(OH)3,HnPO43-nMe3+,Me(OH)3,,。Fe,,,[5]。(3)、(4),,,()::CakMem(H2PO4)f(OH)h(HCO3)c:Mex(OH)y(HCO3)z,,,Fe、Al,Ca,CaMg。33.1(MAP)、,,。,,MgNH4PO4·6H2O,,,[6]。Mg2+(Mg)、NH4+(N)PO43-(P),KSP,,(6)。Mg2++NH4++PO43-+6H2O→MgNH4PO46H2O↓(6)0℃0.023g/L。,2.5×10-13。pH,pH。Mg2+(Mg)、PO43-(P)Mg2+/PO43-。,、、,pH、Mg/P、、。3.23.2.1,Lee[7],1min,10min。Booker。,,。3.2.2,。Stratful[8],pH10、318mg/L、836--●80mg/L、60~150mg/L,30~80mg/L,;,。pH。3.2.3、、1,,。,。、pH。pH9.0、、1.3,。,,、1.3。3.2.4pH,pH7.5~10,;pH10,Mg3(PO4)2(Ksp=9.8×10-25);pH11,Mg(OH)2。,pH8.0~10.7,pH。pHCO2。3.3,20%~50%,,。、,,。、。3.4。,、、()、[9]。,、,,。[10-11],,,。、,。,、,。,、、。4,。,,、,,;。1,.()[M].:,1999.2LMontastruc,CAzzaro-Pantel,BBiscans,eta1.Athermochemicalapproachforcalciumphosphateprecipitationmodelinginapelletreactor[J].ChemicalEngineeringJournal,2003,94:41-50.3,,.[J].,2003(5):19.4Metcalf&Eddy,Inc.WastewaterEngineeringTreatmentandReuseFourthEdition[M].:,2002.5.[M].:,1994.6,,.[J].,,2007,26(4).7LeeSI,WeonSY,LeeCW,etal.Removalofnitrogenandphosphatefromwastewaterbyadditionofbittern[J].Chemosphere,2003(51):265-271.8StratfulI,ScrimshawMD,LesterJN.Conditionsinfluencingtheprecipitationofmagnesiumammoniumphosphate[J].WaterRes.,2001,35(17):4191-4199.9,.———[J].,2003,29(1):20-24.10,.MAP[J].,2006,32(2):34-36.11,,.MAP[J].,2006,16(2):144-146.(/):837

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