--郑志军1,王奎涛1,张炳烛1,高金龙1,刘晓青2(1., 050018;2., 050018) :,--,。,COD5000mg·L-13000mg·L-1,(PAM)COD1200mg·L-1,,48h,120mg·L-1。GB13456-92COD150mg·L-1。 :;;;; :X703 :A :1671-9905(2009)07-0048-03 、,,,70%,40%。,,,[1~2]。,。、。,[3]。,[4],,,、[5~6]。,--。1 试验内容1.1 ,1。:(1981-),,,。:13582038554;E-mail:zhengzhijun11@126.com:(1962-),,,,、,:13930106065;E-mail:xiaoyuan41@126.com:2009-01-14 1 /mg·L-1CODCN-NH3-NpH5000~4500700~80018~2050250~300320200~3008~91.2 1.2.1 ClO2:5NaClO2+4HCl※4ClO2+5NaCl+2H2O 1.76%ClO2。1.2.2 PAM;1+1;30%NaOH;PHS—25;BP310S;;;(,,)。1.3 1。1.76%,,38 720097 Technology&DevelopmentofChemicalIndustry Vol.38 No.7Jul.2009COD;,pH,(PAM),,COD;,,,,COD。COD。1 --Fig.1 schematicdiagramofthechlorinedioxidecatalyticoxidation-coagulation-aerobicaerationprocess2 实验结果及讨论2.1 ,pH2~3。,pH,H+,,;pHClO2,,,pH=3。,,,,ClO2,ClO2。 2ClO2COD,CODClO2,ClO2176mg·L-1,COD,ClO2176mg·L-1,COD3200mg·L-1。2 ClO2CODFig.2 EffectofdifferentamountClO2onCOD2.2 (PAM),pH≈5~6,COD。3 PAMCODFig.3 EffectofdifferentamountPAMonCOD 3PAMCOD,PAM,PAM,,;PAM,,,,PAMCOD,PAM100mg·L-1,COD1270mg·L-1。2.3 2.3.1 ,:,,,,。2.3.2 497 ,:-- 6L,20~40℃,pH5~6。,,10min,,COD。,COD150mg·L-1,,,,;COD150mg·L-1,,COD,4。4 CODFig.4 EffectofdifferentruntimeonCOD 4,48hCOD120mg·L-1,GB13456-92《》COD150mg·L-1。3 结论(1),pH=3,,:ClO2176mg·L-1,COD5000mg·L-13000mg·L-1;pH5~6,PAM100mg·L-1,COD1270mg·L-1;48h,COD120mg·L-1。(2),——,,COD,;、,,。:[1] ,.[J].,2004,29(2):51-53.[2] ,.[J].,2008,44(2):29-31.[3] ,,.[J].,2002,25(6):40-42.[4] ,,.[J].,2002,3(5):49-53.[5] ,,,.[J].,1997,13(1):14-17.[6] ,,.[J].,2002,3(9):63-65.TreatmentofCokingWastewaterbyChlorineDioxideCatalyticOxidation-Coagulation-AerobicAerationProcessZHENGZhi-jun1,WANGKui-tao1,ZHANGBing-zhu1,GAOJin-long1,,LIUXiao-qing2(1.CollegeofChemicalEngineering,HebeiUniversityofScienceandTechnology,Shijiazhuang050018,China;2.ShijiazhuangLvyuanEnvironmentalProtection&TechnicalDevelopmentCo.Ltd,Shijiazhuang050018,China)Abstract:Accordingtothequalitycharacteristicofthecokingwastewater,somebasicrunningparametersweregotthroughthetreatmentofcokingwastewateratthepilotscalebythetechnologyofchlorinedioxidecatalyticoxidation-coagulation-aerobicaeration.TheexperimentalresultsshowedthattheCODofcokingwastewaterwasfallfrom5000mg·L-1to3000mg·L-1bychlorinedioxidecatalyticoxidation,theCODdecreasedto1200mg·L-1bypolyacrylamide(PAM)coagulationtreatment.Thenbiochemicalprocesswasappliedatlaterstage,andtheresidencetimewascontrolledat48h,CODofthewaterdraindecreasedto120mg·L-1.Aftertreatment,thecokingwastewatercouldmeetthestatestandardsfordischargeofwastewaterdrainage(GB13456-92).Keywords:cokingwastewater;chlorinedioxide;coagulation;aerobicaeration;biochemicalprocess50 38