12最适条件三维电极法处理印染废水

,,(,210098)[]pH:2530V120180minpH615715COD90%50%,BOD5/COD01210132pH,COD,[];;[]X70311[]A[]1006-1878(2004)02-0124-04[]2003-02-28;[]2003-06-30[](1979),,,(Three-dimensionalElectrodes),,(),,,,[16]pH,COD,,[7,8],1111,,,1StudyonTreatmentofXylene-containingWasteGasbyTricklingBiofilterPackedwithCeramicPelletsWangFengdan1,ChuQingdong2,LiuQiang1,MaGuangda1(11XianUniversityofArchitectureandTechnology,ShanxiXian710055,China;21BeijingInstituteofPetrochemicalTechnology,Beijing106217,China)Abstract:Twodifferentkindsofceramicpelletswereusedasfilteringmaterialoftricklingbiofilterforpurifyingxylene-containingwastegas.Theinfluencesofoperationparameterssuchasliquidflowrate,gasflowrate,influxgasload,NH3-Nconcentrationinnutrientliquidandtheheightoffilteringbedontheperformanceofthetricklingbiofilterwerestudied,andtheperformancesofthetwokindsofceramicpelletswerecompared.Theresultsshowthatthelessthegasentersintothebiofillterandthelowertheinfluxgasloadis,thehighertheremovalefficiencywillbegained.Togethigherefficiency,abundantnitrogensourceisneeded.Iftheconcentrationofxyleneishigh,itisnecessarytoincreasetheheightoffilteringbedtoreachtherequestofpurification.Usingceramicpelletswithlargespecificareaasfilteringmaterialcanshortenthetimeofbiofilmformation,reduceenergyconsumption,andincreasepurificationefficiency.Keywords:tricklingbiofilter;ceramicpellets;packing;xylene;wastegastreatment421ENVIRONMENTALPROTECTIONOFCHEMICALINDUSTRY20042421pH/104/(scm-1)COD/(mgL-1)BOD5/COD111550011495670121112,30cm1115cm18cm,()(),1,3L111;231;41();51;61113,,,,,,27h,,,114()pH;;[7]COD;DDS-11C2211(,25V)(,25V),2323,,COD,,,,2;3COD;212180min,,22/V152535,%829194COD,%451146210158164/(kWht-1)111972318368158,,;,,,COD2,25V,COD62101%,91%:,,5212.,,,,,,,COD,,,2530V,,21330V,,33/min153060120180240300,%5010801090109110931095109610COD,%18156251712918745146551085713155197/(kWht-1)5111010201174615973131991061233,,COD;180min,COD,;240min,COD,,120180min214Na2SO4()25V180min,,44104/(scm-1),%COD,%/(kWht-1)1149935210123120119695551082918821489556112351144,,,Na2SO4215pH25V180min,H2SO4()pH,pH,55,pH617713,pH6157155pHpH,%COD,%/(kWht-1)1115933218023120810924211621120713945510819140617944710519160216COD30V,COD,,66COD/min3060120180240300COD,%121352515953193541315513259148COD,%1615119128381976011868173661416,COD,3h,COD,COD,,217,BOD5/COD01210132,,322,621ENVIRONMENTALPROTECTIONOFCHEMICALINDUSTRY200424,,,,(),,,,,,,,,,,,,,COD4a):2530V120180minpH615715,(),,b),COD50%,90%,BOD/COD01210132COD,,COD,c),COD,1,,..,1997,(5):12192KreysaG,etal.CylindricalThree-dimensionalElectrodesunderLimitingCurrentConditions.JApplElectrochem,1993,23(7):7077143,,..,1998,18(1):584,,..,2002,8(3):3273325,..,1994,14(2):23256RagniniCAR,DiIRA,BizzoW,etal.RecycledNiobiumFeltasanEfficientThree-dimentionalElectrodeforElec2trolyticMetalIonRemoval.WaterRes,2000,34(13):326932767,,..,1996,22(3):30338..,1998,20(5):22419..(3).:,1989TreatmentofDyeingWastewaterbyThree-dimensionalElectrodeProcessHeGuojian,LiuXiaobo,WangDeguan(CollegeofEnvironmentalScienceandEngineering,HohaiUniversity,JiangsuNanjing210098,China)Abstract:Astudyonthetreatmentofdyeingwastewaterbythree-dimensionalelectrodeprocesswascarriedout.Theeffectsofaffectingfactorsontreatmentefficiency,suchasvoltage,electrolysistime,conductivity,influentpHandsoon,wereexamined.Thedeterminedoptimumprocessconditionsareasfollows:voltage2530V,electrolysistime120180min,influentpH615715.TheremovalratesoftheeffluentcolorityandCODareover90%and50%respectively.Thetreatmentefficiencyisaffectedsignificantlybyvoltage,electrolysistimeandinfluentpH.TheeffluentCODfromdifferentelectrodesaredifferent.Thepowerconsumptionisaffectedverymuchbytheinfluentconductivity.Keywords:three-dimentionalelectrode;electrolysis;dyeingwastewater7212.