MAP法处理化肥厂废水

*MAP453000MAPpHMgCl26H2ONa3PO412H2OMg2+:PO43-:NH4+1.5:0.9:1pH8.5～9.52000mg/L15mg/L95%MAPO29A1008-7613200602-0031-020MAPMagnesiumAmmoniumPhosphate1MAPMgNH4PO46H2OMAPMg2+PO43-11.12000mg/LpH9.0pH1.21000mlpHMgCl26H2ONa3PO412H2O20min2～31.3Mg2++PO43-+NH4++6H2O→MgNH4PO46H2O↓1Mg2++HPO42-+NH4++6H2O→MgNH4PO46H2O↓+H+2Mg2++H2PO4-+NH4++6H2O→MgNH4PO46H2O↓+2H+3Ks=Mg2+NH4+PO43-=2.5×10-13423pHNaOH2322.1pHMAPpHpH9.5Mg2+OH-MgOH2pH11MgPO43pH7PO43-1pH7.5～10pH9.071pH750mg/LMg2+:NH4+:PO43-1.5:1:0.9NaOHpH1pH9.098%5mg/L1pH13202Vol.20,No.220063JOURNALOFXINXIANGTEACHERSCOLLEGEMAR,2006*2005-11-13.1976-1pHpH%mg/L7.58.08.59.09.598.288.388.188.088.06009901050130010002.21MgNH4PO46H2OMg2+:NH4+:PO43-1:1:1Mg2+PO43-1NH4+:PO43-1mg/LMg2+:NH4+1.5:12MgCl26H2ONa3PO412H2OpH9.02Mg2+:NH4+:PO43-%mg/L1.5:1:0.51.5:1:0.61.5:1:0.71.5:1:0.81.5:1:0.955596.2599.251.51.51.59.219.820.80.996.25%99.25%75mg/L15mg/L9.2mg/L19.8mg/LPO43-:NH4+0.9:1pH9.031.5100mg/L3Mg2+:NH4+:PO43-mg/Lmg/L1.0:1:0.91.2:1:0.91.5:1:0.9370165751.000.680.723MgNH4PO46H2O1.7MgNH4PO46H2O2451kg1.71kg2.21kgNaOH17.5kgMAPNPMgMAP198～330/MAP412000mg/L4MgNH4PO46H2O95%2MgCl26H2ONa3PO412H2OMg2+:NH4+:PO43-1.5:1:0.9pH9.02000mg/L15mg/L20mg/L31MiecczyslaB.etal.RecoveryofammoniumandnitrateionsfromwastewaterandtheirconversiontomineralfertilizersJ.CA1990113190-3392GB11893-89.S.3GB7479-87.S.4.A..C.1998.112.2320