含氰含铬电镀废水的分类处理工程实例林华

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Engineeringexamplesoftheclassifiedtreatmentofchromium-containingandcyanide-containingwastewaterLinHua1,HuangMing1,2,XuLiwei1,2,TaoJixun1,ZhangXuehong1,ZhaoChengwei1(1.CollegeofEnvironmentalScienceandEngineering,GuilinUniversityofTechnology,Guilin541004,China;2.FacultyofUrbanConstructionandEnvironmentalEngineering,ChongqingUniversity,Chongqing400045,China)1,1,2,1,2,1,1,1(1.,541004;2.,400045)[],,、、、,,。,,,98%,《》(GB8978—1996)。[];;[]X703[]B[]1005-829X(2009)10-0063-03Abstract:Classifiedtreatmenthasbeenusedfortreatingtheelectroplatingwastewaterinamechanicalaccessoriesfactory.Theelectroplatingwastewaterisclassifiedintochromium-containingwastewater,cyanide-containingwastewater,mixedwastewaterandalkali-containingwastewater.Itisprovedthatchemicaltreatmentiseffectiveandstable.Theremovalratesofthemainpollutantsarehigherthan98%.Afterthetreatment,thewaterqualityoftheeffluentwaterreachestheFirstGradeDischargeStandardofWastewater(GB8978—1996).Keywords:electroplatingwastewater;chromium-containingwastewater;cyanide-containingwastewater,600t,、、、、、、、,〔1-2〕,。80,,《》(GB8978—1996)。1、,、、、,,,160m3/d,40m3/d,40m3/d,()80m3/d。,200m3/d,《》(GB8978—1996),1。22.1,。:[](40663002);(2005221)1pH()2.5~4.0/(mg·L-1)8.5pH()10~11.5/(mg·L-1)0.91/(mg·L-1)10.9/(mg·L-1)23/(mg·L-1)12.1/(mg·L-1)182910200910IndustrialWaterTreatmentVol.29No.10Oct.,200963——2009-10,29(10)。,、,、,。。(1),pH2.5,,Cr6+Cr3+,30min,。(2),NaClOCNO-,,NaClO,CNO-CO2N2〔3〕。(3),,pH。(4)、,,NaOHPAM,pH9~10,,,,pH6~9,,。2.2、2。33.1(1)。,pHpH=2.5,pH2.5,。,(ORP)ORP=250mV,。ORP250mV,。,,30min。。(2)。,pH10.5,NaOH,pH10.5,。,ORPORP=350mV,ORP350mV,。,。,,pHORPpH=7.5,ORP=640mV。30min,。(3)。,pHNaOH,pH10.5。PAM,。,,,。(4)pH。,pH,pH7.5,。(5)。,,,(g/kg):6.28、2.21、9.48。,。3.2200711,,,,,98%,《》(GB2,3.5m×4.0m×3.0m,35m3,8h,3.5m×4.0m×3.0m,35m3,8h,4.0m×1.6m×3.0m,19m3,8h,7.25m×4.0m×3.0m,87.0m3,8h,2.0m×1.5m×1.5m,4.5m3,0.5h,、1.5m×1.5m×1.5m,3.3m3,0.5h,2.25m×2.0m×3.0m,8h,D2m×5m,10m3/hpH,1.2m×1.2m×3.0m,4.32m3,4.0m×3.0m×3.0m,31m3,4.0m×3.0m×3.5m,27m3WQ10-10-1,1.0kW,4WQ15-10-1.5,1.5kW,1WQ15-10-1.5,1.5kW,1GB1000,0.55kW,6BMAY10/870-U-1,1.5kW,164——[](1984—),2006,。:0773-5896340,E-mail:linhua5894@163.com。[]2009-06-23()EngineeringdesignofrefractorypolypropyleneglycolwastewatertreatmentbycombinedbiochemicalmethodsZhongFei,PengBo(AppliedChemistryDepartment,NanjingChemicalEngineeringVocationalCollege,Nanjing210048,China),(,210048)[],,,,/。,GB8978—1996CODCr≤80mg/L,。[];;[]X703[]B[]1005-829X(2009)10-0065-04Abstract:Basedonthebiochemicalfeatureofpolypropyleneglycol(PPG)wastewaterandtreatmentexperiments,anewpretreatmentprocessbymembraneseparationhasbeenusedtorecoverhighmoleculePPGfromwastewaterbysplittingflowtreatmentinadvance.Then,thewastewateristreatedbydifferentbiochemicalmethods,suchasanaerobicandaerobiccombinedbiologicaltreatmentprocess.OperatingresultsindicatethattheprocessiseasytooperateandthetreatedwastewatercouldbeensuredtomeettherequirementsoftheFirstClassStandardGB8978—1996andtheprovincialstandard(Jiangsu,CODCr≤80mg/L).Keywords:polypropyleneglycol;membraneseparation;biochemicaltreatment2910200910IndustrialWaterTreatmentVol.29No.10Oct.,20093pH/(mg·L-1)/(mg·L-1)/(mg·L-1)/(mg·L-1)/(mg·L-1)/(mg·L-1)6.50~7.8910.912.18.50.9123187.580.020.040.060.010.20.066~90.51.50.51.02.00.58978—1996),3。3.3200m2,80,0.62/m3,1.95/m3,0.43/m3,0.10/m3,0.2/m3,3.30/m3。4(1),,、,。(2),,、,。(3)pHORP,,,、、,《》(GB8978—1996)。(4),,,。[][1],.[J].,2008,15(3):69-72.[2],.[J].,2004(2):69-71.[3],,,.[M].:,2002:192-196..............................................65——

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