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INDUSTRIALWATER&WASTEWATERVol.45No.2Apr.,2014,,,,,(,100039)-,、、,,[1]。《“”》“”,,[2-4],、(PAH)N、SO,,CODCr、NH3-N[5-6]。,,,。,、[7-9]。,:以煤制气废水为研究对象,考察臭氧接触时间和臭氧通量对色度和UV254去除效果的影响,研究了臭氧-活性炭工艺在煤制气废水深度处理中的应用效果及影响因素。结果表明,与臭氧直接氧化相比,臭氧催化氧化对色度和UV254的去除效果显著提高,最佳臭氧接触时间为2h,最佳臭氧通量为5L/min,在此试验条件下连续运行该工艺深度处理煤化工废水,进水SS浓度和pH值对处理效果有较大影响,CODCr和色度去除率分别为89.95%和86.50%,出水CODCr的质量浓度小于30mg/L,色度为30度,远优于GB8978—1996《污水综合排放标准》中一级标准的要求,达到废水回用相关标准的要求。:深度处理;煤制气废水;臭氧;臭氧催化氧化:X703.1;X743:A:%1009-2455(2014)02-0014-05Experimentalstudyonadvancedtreatmentofcoalgasificationwastewaterbyozone-activatedcarboncombinedprocessLIUYing,CHENXue,CHENWen-ting,XUKui-jiang,SHENGFei,ZHANGBao-lin(BeijingLucencyEnvir-tech.Co.,Ltd.,Beijing100039,China)Abstract:Takingcoalgasificationwastewaterastheresearchobject,theinfluenceofozonecontacttimeandfluxonchromaandUV254removalwereinvestigated.Theapplicationperformanceofozone-activatedcarbonprocessinadvancedtreatmentofcoalgasificationwastewaterandtheinfluencingfactorsthereofwerestudied.Theresultsindicatedthat,ozonecatalyticoxidationhadabetterremovaleffectonchromaandUV254comparedtoozoneoxidation.Undertheoptimalconditionthattheozonecontacttimeandfluxwere2hand5L/minrespec-tively,thesaidprocesswascontinuouslyruntotreatcoalgasificationwastewater,theresultsshowedthat,thetreatmenteffectwasobviouslyaffectedbyinfluentSSconcentrationandpHvalue,theremovalratesofCODCrandchromawere89.95%and86.50%respectively,themassconcentrationofCODCrintheeffluentwaterwaslowerthan30mg/Landthechromawas30Pt-Counit.Theeffluentwaterqualitywasmuchhigherthanthespecifica-tionofgrade1inGB8978—1996Integratedwastewaterdischargestandard,andcouldmeettherequirementofrelatedstandardforwastewaterreuse.Keywords:advancedtreatment;coalgasification;ozone;ozonecatalyticoxidation·14·pH/ρ(CODCr)/(mg·L-1)ρ(SS)/(mg·L-1)4.8~7.3240~72045.2~139.145~9211Tab.1Characteristicsofcoagulationsedimentationtankeffluentfromcoalgasificationwastewatertreatmentprocess121-Fig.1Flowoftheozone-activatedcarbonprocesstreatingcoalgasificationwastewater,、,-,。11.1废水来源与水质,--,1。1,CODCr,GB8978—1996《》,HG/T3923—2007《》、GB/T19923—2005《》。1.2试验装置1,,,175、155130L,,。3,。CF-YG20,,,20g/h。,700~800m2/g。2,CODCr,,。1.3催化剂及投加方式2,ZZGZ。ZZ3~5mm,,10~15mm;GZ3~5mm,。2(MnO、MnO2)、。,,10kg。1.4试验方法2,1,2,2,,。2-,,,、、CODCr。1.5分析方法CODCrHACHDRB200COD,pHHACH-phc10103pH,UV254HACHDR6000,。22.1臭氧通量对处理效果的影响,1h,3、4、5L/min,、UV254。2.1.12。2,3、45L/min,380、280440,150。5L/min,,65.9%。10min,,,,,:-·15·INDUSTRIALWATER&WASTEWATERVol.45No.2Apr.,2014 102030405060/min2Fig.2Influenceofozonefluxonchromaremoval/50040030020010003L/min4L/min5L/min3L/min4L/min5L/min806040200-20/% 3UV254Fig.3InfluenceofozonefluxonUV254removal0102030405060/minUV2541.71.51.31.10.93L/minUV2544L/minUV2545L/minUV2543L/min4L/min5L/min403020100-10/%4Fig.4Influenceofozonecontacttimeonchromaremoval 20406080100120/min/8006004002000100806040200/%1h1h2h2h。2.1.2UV254、,,UV254C==C、C==O,CODCr[10]。,UV254CODCr0.9826,。UV2543。3,,5L/min,UV25435%,3L/min,UV25422.7%。(10min),UV254,。,,,。,,,UV254,UV254,UV25435.96%。·OH,,,[11-14]。2.2臭氧接触时间对处理效果的影响5L/min,4。4,,,1h,1h。2h,,1h75%83.3%。,UV254,1h33%42%。,2h。2.3催化剂对处理效果的影响,5L/min,2h,2,UV254。2.3.15。5,295%,12%。,,·16· 20406080100120/min5Fig.5Influenceofcatalystsonchromaremoval/8006004002000ZZ100806040200/%GZGZZZ20406080100120 /min6UV254Fig.6InfluenceofcatalystsonUV254removalUV2541.61.20.80.40ZZUV254UV254806040200-20/%GZGZUV254ZZ204060801001207CODCrFig.7RemovalratesofCODCrineachunitofconcontinuousadvancedtreatmentprocess 12ρ(CODCr)/(mg·L-1)806040200100806040200/%CODCr,150,30,20,。2.3.2UV254UV2546。6,2UV254,UV254,UV25470%~80%,30%。2,UV254,UV254,,·OH,,,。ZZ,,GZ。2.4臭氧-活性炭深度处理工艺连续性试验HRT2h,5L/min,133mg/L,CODCr、。2.4.1CODCr-CODCr7。7,CODCr74.5%,CODCr82.8%。CODCr,CODCr15.45%,CODCr89.95%,CODCr30mg/L,6.3mg/L。SS,921mg/L,,CODCr。,;,CODCr。SS45~56mg/L,,CODCr。SS,,SS。2.4.2-8。8,76.8%,,,10%,86.50%,30。,,,,,:-·17·INDUSTRIALWATER&WASTEWATERVol.45No.2Apr.,20148Fig.8Removalratesofchromaineachunitofcontinuousadvancedtreatmentprocess12/4003002001000100806040200/%CODCr ''',CODCr,,,,,,CODCr,CODCr。3dpH,pH5.02,44.4%。[15-16],pH,,,·OH,,,,pH7,[14-15]。3(1),UV254,2,2h,5L/min,30,95%,UV25470%~80%。(2)-。,CODCr89.95%86.50%,CODCr30mg/L,30,GB8978—1996,。(3)SSpH,SS,pH。(4),,。:[1],,.“”[J].,2012,43(5):1-6.[2].[J].,2012,32(3):34-38.[3],.[J].,2012,31():182-185.[4]WangZixing,XuXiaochen.TreatmentofLurgicoalgasificationwa-stewaterinpre-denitrificationanaerobicandaerobicbiofilmprocess[J].JournalofEnvironmentalChemicalEngineering,2013,1(4):899-905.[5]WangWei,HanHongjun.Recoverystrategiesfortacklingtheim-pactofphenoliccompoundsinaUASBreactortreatingcoalgasificationwastewater[J].BioresourceTechnology,2012,103(1):95-100.[6],,.[J].,2012,43(4):1-6.[7],,.[J].,2006,26(4):22-24.[8],,.[J].,2013,24(9):3390-3395.[9]FontanierV,FarinesV,AlbetJ,etal.Studyofcatalyzedozona-tionforadvancedtreatmentofpulpandpapermilleffluents[J].WaterResearch,2006,40(2):
本文标题:臭氧活性炭工艺深度处理煤制气废水试验研究刘莹
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