含镉废水处理方法的比较

236201012POLLUTIONCONTROLTECHNOLOGYVo.l23,No.6Dec.,2010,(南京师范大学地理科学学院,江苏南京210024):,,:;;:X703:AComparisonAmongVariousTreatmentMethodsofWastewaterContainingCadmiumSHENPing,ZHUGuowei(SchoolofGeographyScience,NanjingNormalUniversity,Nanjing,Jiangsu210024,China)Abstract:Basedontheintroductionofphysica,lchemicalandbiologicaltreatmentmethodsofwastewatercontainingcadmium,throughcomparison,thispapercametoaconclusionthatbiologicalstrengthentechnologyhavegreatdevelopmentpotentialityinthetreatmentofwastewaterwithcadmium.IttookafurtherexpoundoncadmiumpollutioninKuiriver.Keywords:cadmium;wastewatercontainingcadmium;treatment:2010-09-16;:2010-10-27:(1987),,,,2002!(GB3838-2002)∀0.001mg/L,#~∃0.005mg/L,%0.01mg/L!(GB5084-92)0.005mg/L!(GB8978-1996)0.1mg/L!(CJ3082-1999)0.1mg/L,,,(0.1mg/L[1]),,,,,,,,1:;;1.1物理化学修复技术,1.1.1,(CaO)[Ca(OH)2](,CaO)(CaO&MgO),,,Mg(OH)2MgO,,,,,2010121.1.2,,Na2SNaHSH2S[2][3],,pH,99.6%,,H2S,,,1.1.3,,pH,1.1.4,[Cd(CN)4]2-Cd2+CN-,,Cd2+,CN-:Cd(OH)2HOC,lOH-Cd2+Cd(OH)2,HOCl,CN-CO2-3N2,[Cd(CN)4]2-,CO2-3Ca2+CaCO31.1.5,pH9~10,,,,,,,0.1mg/L[4]1.1.6,,-,,(FBE),,98.0%[5]96~99%[6]1.2植物修复技术(PhytoreMediation),,,,,,,,,Cd[7],CdCdCd,Cd[7],(Gymnocorovisspilanthoides)(Myriophyllumaquaticm)(Oenanthejavanica)3(Cd2+0.51.05.010.0mg/L)3:3,,33[3]1.3生物强化技术,,,,,,,,,,,,,,,,2,11,,57236,,,,1,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,3,27km,,,,1994,20t,65%,,,∋(3.1奎河水环境现状2008,,,,,%,20042005,,3.2奎河水污染原因分析,,,22,23.3最近几年奎河镉污染情况15,[8]34,Cd,,3mg/kg25.600.32.634mg/kg0.160.3021.003.00582010123.4近年来奎河水环境的改造-废水处理,,,,,,4,,%,,[][1]Pulford,ID,WatsonC.Phytoremediationofheavymetal-contaminatedlandbytrees-areview[J].EnvironmentInternationa,l2003,29:529-540.[2].[J].,1997,(5):18.[3],,,.3[J].,2008,01(1):52-55.[4].[J].,1995,(2):15.[5].[J].,1996,16(6):3-5.[6].[M].:,1992,83-85.[7],,,.Cd[J].()2005,28(3):325-327.[8],,,[J]..2004,20(6)45-48.(上接第47页),,,,,3.2积极推广环保先进适用技术,,;,,,,3.3大力发展环保产业,,,,,,,3.4积极争取各项扶持政策,,,,;,4,,,,,,,[][1]!,,200891[2],(2008),2009518[3],()2008∗48),20081023[4],()()2008∗38),200882059