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272 Vol.27 No.220074SHANXICHEMICALINDUSTRYApr.2007:2006-11-16: ,,1979,2002,,。 要 玲(中北大学分校环境工程系,山西 太原 030008):MgSO4·7H2ONa2HPO4·12H2O,MgNH4PO4·6H2O。,pH、。:;;:TQ085+.412;O652.6 :A :1004-7050(2007)02-0061-03 ,。,。MgSO4·7H2ONa2HPO4·12H2O,MgNH4PO4·6H2O。,pH、、。1 1.1 仪器及试剂:480mg/L,1450mg/L,2560mg/L。:pHS-10;721。1.2 实验机理NH+4-NH3,:NH3+H2ONH+4+OH-,pH。pHNH3。MgSO4·7H2ONa2HPO4·12H2O,MgNH4PO4·6H2O(MAP),MAP。:Mg2++PO3-4+NH+4+H2OMgNH4PO4·6H2O↑1.3 实验方法,,,。MAP500mL,:1),200mL;2),,pH;3)14mol/L、10mol/L0.5mol/LNaOHpH;4)15min,,pH;5)MAP,N、P、Mg;6)MAPN、P、Mg。1.4 测定方法1):(GB7479-87)。2):(GB11893-89)。DOI:10.16525/j.cnki.cn14-1109/tq.2007.02.0223):EDTA。2 2.1 正交实验影响因素和水平设计pH、。(1)(2),3。1 123A1∶1∶11.5∶1∶12∶1∶1B71013C480.01450.02560.0 :A———n(Mg)∶n(P)∶n(N);B———pH;C———,mg/L。2 ABC111121223133421252236231731383219332K1232.64234.57193.36K2226.14266.07235.77K3232.16190.22261.81k177.5578.1964.45k275.3888.6978.59k377.3963.4187.27R2.1725.2822.82A1B2C32.2 讨论,4。pH5。6。2,BCA,pH,A1B2C3。n(Mg)∶n(P)∶n(N)=1∶1∶1、pH=10、2560mg/L,3 (N)/mg·L-1/%PO3-4(P)/(mg·L-1)Mg2+(Mg)/(mg·L-1)pH1180.0062.50342.50.426.872141.2590.2674.70.059.973515.0079.88552.00.0212.714235.0083.79198.81.976.945162.5093.6511.93.1510.186246.2548.70298.50.0212.847300.0088.28115.46.386.90885.6382.163.51.4310.459555.0061.7273.80.0412.724 n(Mg)∶n(P)∶n(N)/%1.0∶1∶177.551.5∶1∶175.382.0∶1∶177.395 pHpH/%778.191088.691363.416 /mg·L-1/%48064.45145078.59256087.2796.8%。3 1),pH、、。n(Mg)∶n(P)∶n(N)=1∶1∶1、pH=10、2560mg/L,96.8%。2)MAP,,。,MAP、,。:[1] .[M].2.:,1993:282.[2] , .[J].,·62· 200742001,21(6):47-52.[3] .[J].,2001(6):55-56.[4] KenichiEbata,KaoruIchimaru,KyojiTon.Ammoniaremovalfromwastewater[J].JapanKokai,1977,77(4):649.[5] HiroshiOno,NaokiOkads.Removalofammonicalnitro-genfromwastewater[J].JapanKokai,1977,77(155):860.[6] KatsuyukiKataoka.Treatmentofwasteregenerationso-lutionsinionexchangetreatmentofwastewater[J].JapanKokai,1978,78(67):675.InfluencingfactorsonchemicalprecipitationpretreatmentofhighstrengthammonianitrogenwastewaterYAOLing(DeptmentofEnvironmentEngineering,BranchofNorthUniversityofChina,TaiyuanShanxi030008,China)Abstract:Thefactorsofeffectonchemicalprecipitationpretreatmenthighstrengthammonianitrogenwastewaterwerestudiedinthispaper.Bycrossexperimentanalyzing,aconclusionwasobtainedthatpHvalue,medicinequantityandammonianitrogenconcentra-tionhadabviousaffectiontotheremoverateofammonianitrogen.Keywords:ammonianitrogenwastewater;chemicalprecipitation;crossexperiment2006。HWV。;,;。,、,、、,。,,、、、、,2、10、3060,。()凡投向我刊的论文,属于国家自然科学基金、国家各部委基金,以及其他重大或重要科研项目,请随稿提供项目名称、年度、编号。本刊对国家自然科学基金或其他基金资助课题的重点论文优先发表。凡投向我刊的论文,有获优秀论文奖、科技成果奖、专利等,请及时向我刊提供获奖证书、专利证书的复印件或有关证明,我刊将优先予以发表。·63· 20074 ,
本文标题:化学沉淀法预处理高浓度氨氮废水的影响因素要玲1
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