地下水污染的原位修复技术PRB法李金英

———PRB李金英1　佟元清1,2　蔡五田1　郭彦威1　王秀明1(1.,071051;2.,430074)　原位修复地下水污染技术,具有经济、高效等特点。国外大量研究表明,此技术可以有效去除地下水中的重金属和有机污染物。本文主要介绍了原位修复技术中的PRB方法及其特点,并通过实验验证了其对地下水中重金属、有机物和三氮等污染物的去除效果,以此为基础,讨论了在我国开发应用该技术的前景及应注意的问题。　地下水污染　原位修复　PRB法0　,,。,(permeablereactivebarrier,PRB)。1998,50,。:PRB,。,、、、、。、()、。PRB,。PRB,。1　1.1　PRB系统的设计,PRB,,,(、),。、、。1.2　实验原理,,。,。,,。、,“”,。,,,。1.3　实验装置,80cm,10cm,1。1　8cm,0.5～1.0mm,、;,0.25mm,10cm;,12cm,、、1∶1∶0.5。1.4　实验模拟用水,1。1　mgLCODCrBOD5pHMnZnMg2+NO-3NO-2NH+4810.6326.07.68516.816.826.2256.346.811.229.6　　92　　　200612246DOI:10.13205/j.hjgc.2006.06.0311.5　室内模拟实验方法,,65cmd,2,(1),,CODCr、BOD5、、NO-3、NO-2、NH+4,。2　2.1　反应器介质对有机物的去除CODCr、BOD5。:(1),CODCr、BOD5,。Fe0,,CODCr。,Fe0,CODCr。(2),,。、,“”,,Fe0,。,Fe0。CODCr、BOD5、TCE()PCE()89%、85%、90%、87%(2)。2　mgLCODCrBOD5TCEPCE810.63264.62.889.248.90.450.36%89859087　　2.2　反应器介质对重金属的去除,,、。,。(3)。3　mgLMnZnCrSe16.826.22.62.81.182.880.260.36%93899087　　　　():、、、、、、、、、。2.3　反应器介质对三氮的去除Fe0,,NO-3。NO-3NH+4、N2、NO-2。,NH+4,NO-3NO-2,N2。,Fe0。,NO-3、NO-2、NH+4(4)。4　mgLNO-3NO-2NH+446.811.229.65.61.91.3%88.0383.0495.61　　3　(1),PRB,。PRB。,,,,。,。(2),,、。PRB、,。PRB。PRB;,、PRB,PRB,,93　　　200612246,,,;,PRB,,,。(3)PRB,,,,,,。,PRB。[1]　..,2003,34(7):11-13.[2]　..,2004,26,(2):97-100.[3]　.PRB.,2003,24(5):151-156.[4]　,..,2001,8(2):309-314.[5]　.TCE.,2001,12(2):40-44.[6]　,,..,2003,4(8):41-45.[7]　,..,2000,3:25-27.[8]　,.-,,1997,(1).[9]　USEPA.Permeablereactivebarriertechnologiesforcontamvalentinantremediation.EPA600R-98125,1998.[10]　P.Westerhoff.ReductionofNitrate,Bromate,andchloratebyZeroValentIronEnviron.Engin.,2003,129(1):10-16.　　071051　135　　(0312)31070962006-08-11(91)1　(t·d-1)(t·t-1)°BxpH℃(m·s-1)°BxMPa(m3·t-1)(t·d-1)(·-1)kW5014124.0802.060～650.50.34.06600CODCr(mg·L-1)CODCr%CODCr(mg·L-1)pH(t·d-1)(mg·m-3)(·t-1)(·t-1)14000099.9660.56.8158.42001001.5～7.0　　　　(3),,,,,,,,。(4)　,,CODCr,,,。[1]　MotonobuGoto,TakasuguNada.SupercriticalWaterOxidationfortheDestructionofMunicipalExcessSludgeandAlcoholDistilleryWastewaterofMolasses.TheJournalofSupercriticalFluids,1998,13:277-282.[2]　AntoniaM.Aerobic-anaerobicBiodegradationofBeetMolassesAlcoholicFermentationWasterwater.ProcessBiochemistry,2003,38:1275-1284.[3]　..,1999,(3):36-37.[4]　..,2005,36(2):33-36.[5]　..,1999,(19):148-153.　　530001　185A121205　　(0771)2575169E-mail　[e-mail]2006-01-1794　　　200612246CLEANPRODUCTIONOFPTAEQUIPMENTLiXiaohong　DingYi　ZhangYanqiu(83)…………………Abstract　Throughimplementationofcleanproductionincluding`threewastes'treatment,resource'sintegrativeutilizationandreformofproductionprocessofterephthalicacid(PTA)equipment,itmakesenvironmentaltargetscomeintoreality;andpreferableenvironmental,economicalandsocialbenefitsarealsoobtained.Keywords　PTAequipment,`threewasters'treatment,resourceintegrativeutilization,reformofproductionprocess&equipmentandcleanproductionADVANCEDTREATMENTOFORGANICCOMPOUNDSINWATERUSINGACTIVATEDCARBONFILTERShiDongwen　ChenJianbo　XiDanlietal(85)………………………………………………………Abstract　Biologicallyactivatedcarbon(BAC)filtercouldeffectivelyremoveCODMn,UV254,chloroformformationpotentialanddichlorobromomethaneformationpotentialineffluent,however,freshlyproducedactivatedcarbon(FAC)filterperformedmuchbetterinremovaloftheseorganicsubstances.ThedibromochloromethaneformationpotentialintheBACfiltereffluentwouldriseaftertheadvancedtreatmentwhiletheFACfiltersometimeshasacertainremovaleffect.Keywords　biologicallyactivatedcarbonfilter,freshlyproducedactivatedcarbonfilter,formationpotentialandremovaleffectsCOMPARATIVETESTOFTREATINGDYEINGWASTEWATERBYCATALYZEDIRONINNERELECTROLYSISPROCESSWITHAERATIONANDTHATWITHOUTAERATIONZhaoJianguo　GuoYoucai　WangHuaiyu(88)…………………………………………………………………………………………………Abstract　Aerationandnoaerationareusedincatalyzedironinnerelectrolysis(CIIE)processtopretreatdyeingwastewaterrespectively.Colority,CODCr,phosphateandpHetcinthewastewateraremeasuredbeforeandafterpretreatment.TheresultsoftheexperimentsshowthattheremovalofCODCr,colorityandphosphateinwastewaterisincreasedremarkably;theCIIEprocesswithaerationisbetterthanthatwithoutaeration.Keywords　dyeingwastewater,catalysticironinnerelectrolysis,aeration&noaerationandtestNOVELCONCENTRATEDCOMBUSTIONMETHODANDITSAPPLICATIONINTREATMENTOFALCOHOLWASTEWATERLiShengchao　LiuMinghua　PanZhengxian(90)………………………………………Abstract　Byanalyzingthecharacteristicsofalcoholwastewaterandthecommonproblemsexistinginconcentratedcombustionmethods,anovelconcentratedcombustionmethod,inwhichflashvaporationandconcentrationwithhighflow-rate,large-volume,highvacuumandalternativespurtingandcombustionofconcentratedwastewater,wasusedtotreatalcoholwastewater.Meanwhile,aU-tubeflyashsettlerwasdesignedtoavoidashblockage.TheprojectpracticeshowedthatCODCrremovalrateofalcoholwastewatercanreach99.96%,andzero-emissionoforganicwastewatercanalsoberealized.Keywords　alcoholwastewater,concentratedandcombustionIN-SITURESTORATIONTECHNOLOGYOFGROUNDWATERPOLLUTIONLiJinying　TongYuanqing　CaiWutianetal(92)……………………………………………………………………………………………………Abstract　Thein-siturestorationtechnologyofgroundwaterpollutioniseconomicalandconvenient.Researcheshaveshownthatthetechnologycaneffectivelyel