除砷技术现状与进展陈敬军

陈敬军,蒋柏泉,王　伟(　　330029)　:,,,。:　　　　　　　　1、、。()()。、、、、、、、、,;1.25,3500-7700,1986;1968;1980;(CDC)(LARC)。,0.01ms/L,0,05mg/l。(、、),;,。,,[1]。2、,,、、、、、。:2.1　混凝法(),。;(Fe(OH)2、Fe(OH)3、FeCl3、FeSO4)(Al(OH)3、AlCl3、A12(SO4)3),(Si02Al2O3),(PFSC)、()。,、,,。,1　20046　　　DOI:10.14127/j.cnki.jiangxihuagong.2004.02.001。(、)[2]。,,(As5+)(As3+),,(As3+)(As5+),。(CIO-)、(H2O2),(C12)、(O3)、Mn02。,[3]。,,。2.2　离子交换法,,,,。,,(,TiO2·H2O)()。,[4];Albuquerque[5]。2.3　直接沉淀法,。,:3H2SO4+SO2+3Fe3FeSO4+H2S+2H2O3S2-+As3+As2S3　　,,,S2-As3+.,As2S3,,[6、7、8]。As2S3,,,,。2.4　萃取法,(TBP),,:H3AsO4+H2SO4+TBP+nH2OH3AsO4·H2SO4·TBP·nH2O(1)H3AsO4+H2SO4+TBP+mH2OH3AsO3·H2SO4·TBP·mH2O(2)　　,,[10]。2　　　20042　,(A101),CO2。,,。2.5　反渗透法。(USEPA),,。(As5+)96-99%,(As3+)46-84%,,PH,[11]。,,。2.6　生物法,,,,,[12]。,,。,、。,、、,,,。3、,,。:①,。②,:,,1500。③:,。④;,。、,,。:[1],,·[J].,2002,29(5))[2],·[J].,1995,8(1)[3]J.Pattanayak,K.Mondal,S·Mathew,S.B.Lalvani·Apar-aletricevaluationoftheremovalofAs(v)andAs(Ⅲ)bycar-bon—basedadsorbents[J].Carbon,38(2000)3　20046　　　[4],·[J]。,1995,15(2)[5],,·Albuquerque[J].,2001,16(2)[6],,.·SO2[J].,1999,30(4)[7]·——[J].,1995,6[8]YanxinWang,EricJ.Reardon·Asiderite/1imestonereactortoremovearsenicandcadmiumfromwastewaters[J].ApplledGeochenistry,16(2001)[9]NikolaosP.Nikolaidis,GregoryM.Dobbs,JeffreyA.Lack-ovic'Arsenicremovalbyzero—valentiron:field,laboratoryandmodelingstudies[J].WaterResearch,37(2003)[10],·TBP(v)[J].,1996,46(2)[11]RobertY.Ning·Arsefiicreaovalbyreverseosnosis[J].De-salination,143(2002)[12],,·[J].,1997,19(2)StatusandProgressofarsenicremovalChenJing-jun,JiangBo-quan,Wang-Wei(EnvironmentalandChemicalEngineeringSchool,NanchangUniversuty,Nanchang330029,china)Abstract:Theharmfulnessofarsenicandthestatusofarsenicpollutionareintroduced,thevariousmethodsofarsenicremovalareemmphasised.Atlastthedisadyantagesaboutthetechnologiesofarsenicremovalaresum-marized,andtheviewbasedontheStatusispointedout.Keywords:arsenic-contaminatedWater;arsenicremoval:coagulation;ion-exchange;sedimentation;extrac-tion:reverseosmosis4　　　20042