含氰废水处理技术发展现状与试验研究

2009-01-07、HK06-007(1984-)。(1963-)。1002-1124200903-0019-05Sum162No.03ChemicalEngineer20093、。。[1]CN-0.5~3.5mg·kg-1USEPA0.06mg·kg-1。CN-HCN0.005mg·L-1HCN、、0.1mg·L-1HCN2～3min1h。GB8978-2000。、0.5mg·L-11.0mg·L-1。。0.05mg·L-10.005mg·L-1“”0.5mg·L-1。:0.02mg·L-10.01mg·L-1*150090CN--。COD87％CN-pHCN-。NaOHpH。。CN-X703.1TQ127.1AExperimentalresearchandrecentdevelopmentofthetechnologiesofcyanidecontainingwastewatertreatment*WANGHua-tongCUIChong-weiSchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnologyHarbin150090ChinaAbstract:Thispaperreviewedcyanidewastewaterhazardsandthecurrentdevelopmentoftreatmenttechnolo－giesforthiskindofwater,comprehensivelyandsystematically.ThewastewaterfromDaqingPetrochemicalCom－panyChemicalPlantwhichproducedacrylonitrilewastreatedbyfour-timesevaporation,butdidnotreachthee－missionstandards,takingCNintoaccount.Soweusedultrafiltrationanddual-reverseosmosisprocesstodealwiththepoint.Theresultsshowedthat:thecombinedtechnologycouldnotonlyremoveCODstably,towhichthere－movalefficiencywasat87%orhigher,butalsoremovedCNeffectively.IncreasingthepHvaluewasgoodtoCNremoval.InthisstudyNaOHwasusedtocleanthefouledmembranes.ThenthewashingwatercouldbeusedtoadjustthepHvalueoftherawwater.TheresultsofthestudylaidascientificbasisforacrylonitrilewastewatertreatmentKeywords:cyanidewastewaterultrafiltrationreverseosmosiscyanide0.20mg·L-10.1mg·L-10.5mg·L-1[2]。、CODmg·L-1。COD1000~2000mg·L-1CN-3~7mg·L-110mg·L-1。CN-。CN-。1[3]。1.11.1.1。1930。。。。HCN4~10。。1.1.2R2SO4。LSD-26312.08mg·mL-11.04mg·L-10.29mg·L-190.32%81.80%[4]。K.OsathaphanpH1012。200mg·L-1pH1012800.2mg·L-1。200mg·L-1100mg·L-10.2mg·L-1pH1080pH1290250400。ZnIIOH-。1.2meq·mL-10.9meq·mL-1pHpH[5]。。。。1.1.3。NaCN。。、Cr(VI)、TCr、TNiTCu93.77%、99.99%、99.83%、99.98%98.63%《》DB44/26-2001[6]。1.1.490。CuZnCN-NaOH。CuZn、、。、1/6。、、[7]。20*20093*1.1.5、。。。、、。、。1.21.2.1、、。。SO2-IncoInco80SO2Cu2+HCO3-、NH4+。SCN-SCN-CN-SCN-H2O2pH10~11、Cu2+。CNO-、NH4+。。。H2O2。O3,pH11~12,O3HCO3-N2。。。。O2。O2H2OH2O2H2O2。。1.2.2StefanSalixbabylonica。≤0.93mgCN/L。≥9.3mgCN/L。3.72mgCN/L216h。216h18.6mgCN/L。S.viminalis。。。[8]。。CO2、NH3。E.Mara觡ón。COD800~1870mg·L-1100~221mg·L-1SCN-198~427mg·L-1NH4+-N133~348mg·L-1CN11~21mg·L-199%SCN-97%COD63%NH4+-N98%TN90%99%。。。[9]。1.2.3。CN-CO2N2Cl-Cl2Cl2HClO。、、。。、、。CO2pH、、、、、、。。、、pH、、、、、、。。2009321pHpH8.5~11、。。、。。2.32.3.1COD2。288%82%。NaOHpH93.87%86%COD1700mg·L-193%。2.3.2CN-CN-1998RobertH.。1542μg·L-122μg·L-1[10]。、、CO2TiO2[11][12]。。So-hairI。19mg·L-1、60mg·L-199%[13]。22.12.1.110mLPerkin-ElmerOptima5300PVICPDIONEX4500iUV-25508080DowFILMTECBW30-4040K2Cr2O7H2SO4-Ag2SO4FeSO4HgSO4NaClAgNO3NaOHKIHgI2NH4ClNaOH。2.1.211Tab.1Determingitemsandmethods2.22.2.112.2.2、、ROROpH陴陴陴陴陴陴陴襚襚襚1Fig.1Engineeringflowsheet2500200015001005000COD/mg·L-1COD/%1008060402006-206-226-246-266-286-307-27-4/daCOD/%2500200015001005000COD/mg·L-1COD/%1008060402008-78-98-118-138-158-178-19/dbCOD/%CODCN-pHNH4+-N、Mn2+、Zn2+、Ca2+、Mg2+Cl-、SO42+2CODFig.2RemovaleffectofbuiltuptoCOD22*20093/mg·L-1TFe0.2030.000290.13Mn2+0.01680.012630.02058Ca2+0.5470.107136.12Mg2+0.050.0511.1NH4+-N17.629.710.01Cl-6.290.888.37SO43.130.56.963。3CN-Fig.3RemovaleffectofbuiltuptoCN-3CN-CN-56.82%CN-1.9mg·L-188.35%。2.3.32TFe。TFe。CODCN-99.88%。2Tab.2AnalysisresultsofinorganicionsdeminationofwastewaterinDaqingPetrochemicalIndustry2.3.4,,。0.1%NaOHpH12.4。pH,NaOHpH,。31、2COD93.87%3CN-88.35%4COD、CN-5pH。。1PeterKjeldsenBehaviourofCyanidesinSoilandGroundwa-ter:AReviewWater,Air,andSoilPollution1999115:279-307.2.J.2001,544-47.3.J.,2001216-19.4.J.2007,28251-52.5K.OsathaphanT.BoonpitakT.LaopirojanaV.K.SharmaRemovalofCyanideandZinc-CyanideComplexbyanIon-Ex-changeProcessWaterAirSoilPollut2008194:179-183.6.J.2006321259-61.7.J.200829445-50.8XiaozhangYu,StefanTrappPuhuaZhouPhytotoxicityofCyanidetoWeepingWillowTreesJ.EnvironSci.&PollutRes.2005122109-113.9E.Mara觡ónI.VázquezJ.RodríguezL.CastrillónY.FernándezCokeWastewaterTreatmentbyaThree-StepActivat-edSludgeSystemJ.WaterAirSoil.Pollut2008192:155-164.10RaimundHaberl,StefanoGrego,GfinterLangergraberCon-structedWetlandsfortheTreatmentofOrganicPollutantsJ.Soils&Sediments200332109-124.11.M.2002.12M.YangY.SunA.H.XuCatalyticWetAirOxidationofCoke-PlantWastewateronRuthenium-BasedEggshellCatalystsinaBubblingBedReactorJ.BullEnvironContamToxicol2007,79:66-70.13SohairI.Abou-ElelaHananS.IbrahimEnasAbou-TalebHeavymetalremovalandcyanidedestructioninthemetalplatingindus-try:anintegratedapproachfromEgyptJ.Environmentalist2008,28:223-229.*20093236.05.04.03.02.01.00.0CN-/mg·L-16050403020100-106-206-226-246-266-286-307-27-4/daCN-/%100806040200CN-/%9.08.07.06.05.04.03.02.01.00.0CN-/mg·L-18-78-98-118-138-158-178-19/dbCN-/%CN-/%