MAP法处理医药中间体生产废水中氨氮的研究周露

©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.()JOURNALOFHEFEIUNIVERSITYOFTECHNOLOGYVol.33No.3Mar.2010:2009203211;:2009206211:(1985-),,,.MAP,,(,230009):MAP,pH,:pH10,10min,1111.0,11;,90%:;;MgNH4PO46H2O:X787:A:100325060(2010)0320429203StudyofMAPmethodtodealwithammonianitrogeninthemedicalwastewaterZHOULu,ZHOUYuan2xiang,SONGJing(SchoolofResourcesandEnvironmentalEngineering,HefeiUniversityofTechnology,Hefei230009,China)Abstract:ThispaperstudiestheMAPmethodtodealwithammonianitrogeninthemedicalwastewaterafterthebiologicaltreatment.ThroughthepilotstudyofthepH,reactiontime,molarratioofmagnesiumandnitrogen,andthemolarratioofphosphorusandnitrogen,thebestconditionforthereactionisdeterminedasfollows:thepHvalueis10,thereactiontimeis10min,themolarratioofmagnesiumandnitrogenis1111,andthemolarratioofphosphorusandnitrogenis11.Ammonianitrogenremovalratecanbeupto90%.Keywords:chemicalprecipitation;ammonianitrogenremovalrate;MgNH4PO46H2O081190mg/L,(),1800mg/L[1],MAP,,[2][3,4],,90%[5][6]MAP,,1MgSO47H2ONa2HPO412H2O,MgNH4PO46H2O(struvite(magnesiumammoniumphos2phate),MAP,)6,,1171,245141,,,,100,©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[7]MAP,,,,MgNH4PO46H2OKSP=21510-13,MAP[8,9]:Mg2++HPO42-+NH4++6H2OMgNH4PO46H2O+H+(1)2:PHS23pH,UV754N2[10]100mL,,pH8910,11,1111.0,1121.0,1131.0,1141.0,Na2HPO412H2O,100mL,10,20,30min,30min,3311pHpH11pH1,pH,pH,1339165mg/L257mg/L,pH10,8018%,,pH8,PO43-,MgNH4PO4,Mg(H2PO4)2pH,MgNH4PO46H2O,NaOH,(1),pH,H+,,MgNH4PO4,Mg2+HPO42-NH4+,pH103122,2,1420mg/L89167mg/L,90%,10min,9217%,,,10min,,,MAP,;,10min2313333,nMgnN1111.0,79%,034()33©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:pH10,10min,1111.0,11,,,,MAP,[][1].[J].,2003,17(4):52-54.[2],.MAP[J].,2006,32(2):34-36.[3].[J].,2008,37(3):268-272.[4],,,.[J].(),2007,28(3):61-64.[5]BattistoniP,PavanP,CecchiF,etal.Phosphateremovalinrealanaero2bicsupernatants:modellingandperformanceofafluidizedbedreactor[J].WaterScienceandTechnology,1998,38(1):275-283.[6]TnayO,KabdasliI,OrhonD,etal.Ammoniaremovalbymagnesiumammoniumphosphateprecipitationinindustrialwastewaters[J].WaterScienceandTechnology,1997,36(2/3):225-228.[7],,.MAP[J].,2002,():66-69.[8],,.MAP[J].,2006,16(2):144-146.[9],,,.[J].(),2004,19(2):1-5.[10]GB7479-1987,[S].()1343,:MAP