MAP法去除毛皮加工废水中氨氮的实验研究

322Vol．32．No．220133JOURNALOFXUCHANGUNIVERSITYMar．20132011－11－10PCRRF090161985—[e-mail]13957341066．1671－9824201302－0084－04MAP12*1．3410002．314001、pH、．130mg/LpH=10nMg∶nP∶nN=1．3∶1．1∶120min94%COD．MAPX794．031A、、1．S2－、Cr3+、CODBOD2．．3－4．．．5－6．．MAP．11．1NH4Cl、Na2HPO4·12H2O、MgCl2·6H2O、MgO、NaOH．CODCr1150～1380mg/L、122～160mg/L、145～180mg/L、SS400mg/L．TA6-25B-6DS20KpH－．1．2Na2HPO4·12H2OMgCl2·6H2OMg2++NH+4+PO3－4+6H2O=MgNH4PO4·6H2O↓322MAP．、pH、、、．22．1MAPMgO、MgCl2·6H2OMgSO4·7H2ONa2HPO4·12H2ONaH2PO4·2H2O．nMg∶nP∶nN=1∶1∶1pH920min100/．31．1/mg/L/mg/L/%MgOH3PO413647．9464．8MgCl2Na2HPO413623．5182．7MgCl2NaH2PO413630．0278．9MgSO4Na2HPO413624．9381．7MgSO4NaH2PO413628．6579．0MgOH3PO464．8%．MgOMgOH2MgNH4PO47－8．MgOH3PO4PO3－4Mg3PO42MgOH2．Na2HPO4·12H2ONaH2PO4·2H2O．MgCl2·6H2OMgSO4·7H2ONa2HPO4·12H2O．、、MgCl2·6H2ONa2HPO4·12H2O．2．2pH2pHpH/mg/L/%7．864．9052．38．438．2471．99．024．3682．19．517．8386．910．015．4188．710．940．5570．211．453．7260．525±1℃、136mg/L、nMg∶nP∶nN=1∶1∶1100/10minpHNH+4pH2．pH5．6pH＞8．2pH8pH10pH．pH＞10MgOH2pH＞11Mg3PO42．pH=1015．41mg/L88．7%．pH10．2．325±1℃145mg/LpH10．nMg∶nN=1∶1Na2HPO4·12H2O3．PO3－4．nP/nN．nP/nN1．191．3%nP/nN1．1．58201333nP/nNnP/nN/mg/L/%115．9589．01．112．6291．31．210．7392．61．39．4393．51．49．1493．7nP/nN=1．1MgCl2·6H2O4．nMg/nN＞1．3．nMg/nN1．37．83mg/L94．6%．、nMg∶nP∶nN1．3∶1．1∶1．4nMg/nNnMg/nN/mg/L/%/%111．0292．492．01．110．1593．095．41．29．1493．797．21．37．8394．698．81．47．5494．899．02．425±1℃145mg/LpH10nMg∶nP∶nN=1．3∶1．1∶1NH+4．100/10min、20min、30min、40min、50min、60min5．．20min8．12mg/L94．4%．20min．5/min/mg/L/%107．9894．5208．1294．4306．6795．4407．9894．5506．9695．2607．6894．731MgCl2Na2HPO494%．．2pH．130mg/LpH=10nMgnPnN=1．3∶1．1∶120min94%．3COD．1．J．201128134－39．68322MAP2．J．20042129－13．3．J．200926626－29．4．J．200830427－32．5．J．200934424－26．6．MAPJ．200839633－36．7．J．199242413－14．8．J．201092114－117．RemovalofAmmoniaNitrogeninFurProcessingWastewaterbyMAPMethodCAOLiu1ZHAIZhi-cai2*1．FacultyofResourceandEnvironmentalEngineeringJiangxiUniversityofScienceandTechnologyGanzhou341000China2．CollegeofBiologicalChemicalSciencesandEngineeringJiaxingUniversityJiaxing314001ChinaAbstractAchemicalprecipitationmethodwasemployedtoeffectivelyremovehighconcentrationammonianitrogeninthewastewaterfromfurmakingindustry．SomeimportantfactorssuchastypeofprecipitatorspHval-ueofwastewateramountdistributionofreagentsandreactiontimeonremovalefficiencywereallexamined．Theresultsshowthattheremovalrateofammonianitrogenisover94%atconditionsthatthemeanconcentrationofanamonicanitrogenis130mg/LpH=10nMg∶nP∶nN=1．3∶1．1∶1andreactiontimeis20minwhichisfavorableforthepostbiodegrationofCODandstandarddischargeofammonianitrogen．KeywordsMAPmethodfurprocessingammonianitrogenwastewatertreatment78