溶济萃取法处理含硫酸及硫酸盐的废水

20032ENVIRONMENTALPROTECTIONOFCHEMICALINDUSTRY231,,,,,(,361005)[],,,,[];;;;[]X703[]A[]100621878(2003)0120025203(MMA)():NH4HSO444%,H2SO425%30%,H2O25%30%,,,,,,,11.1KCl,:KCl+H2SO4KHSO4+HCl(1)KCl+KHSO4K2SO4+HCl(2)2KCl+NH4HSO4K2SO4+NH4Cl+HCl(3)(1),,99.6%,(2)(3),,,,500600,H2SO4,,,HCl,(2)(3),K2SO41.2Cl-:;SO42-:;K+:;NH+4:1.3111,2::KCl,,,,,,K2SO4,:NH4Cl[]2001210208;[]2001211225[](1975),,,,,©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),,,,,,11KCl112115min20%,KCl58.40%,K2SO470.25%;K2SO4K2O53.3%,Cl-0.35%,K2SO4ZBG2100688(K2O50%,Cl-11.5%)2.2K2SO4,,,,,,,NaOH,:R3NHCl+OH-R3N+Cl-+H2ONaOH,,NaClCaCl2,;,95%,NH4Cl,,,,22115min1.410mol/L,HCl98%,N25.7%,GB294632(25.4%),NH4Cl,NH4Cl,,,,,,22,,,,1tK2SO41kg2.3,362200323©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(molL-1)1.911.090.362.260.55,,,1tK2SO40.837t,N10%,K2O50%,S,3,1tK2SO40.522tNH4Cl0.837t,,,1.467tKCl;,100,,,;,1tK2SO41350K2SO417002000/t,20000t,652.41252.44a):11;21;15min;;KCl20%b):11;5min;;1.410mol/Lc)K2SO4K2O50%,Cl-0.15%,K2SO4,NH4Cl,N10%,K2O50%d),,,,,,TreatmentofWastewaterContainingSulfuricAcidandSulfatebySolventExtractionProcessSunDaohua,HuYuelin,LiQingbiao,DengXu,HuangYili,WeiBin(DepartmentofChemicalEngineering,XiamenUniversity,FujianXiamen361005,China)Abstract:Industrialwastewatercontainingsulfuricacidandsulfatecanbetreatedbysolventextractionprocesstoproducepotassiumsulfatewithhighqualityasmainproduct,andammoniumchlorideandni2trogenour2phosphaticfertilizerasbyproducts.Theprocesscanrealizecomprehensiveandefficienttreat2mentofthewastewaterbasicallywithoutdischargingwastes.Keywords:wastewatertreatement;sulfuricacid;potassiumsulfate;extraction721.©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.