AO1HO2工艺处理焦化废水硝化过程的实现及其抑制

©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1.,510006;2.,510640),A/O1/H/O2,,,,EC50341262781573124mg/L(C/N4.3/1,pH8815,DO4415mg/L),5mg/L,//,,A/O1/H/O2X703A167329108(2010)0621231207AchievementandinhibitionofnitrificationincokingwastewatertreatmentbyA/O1/H/O2processesLiYuanyuan1PanXiaxia1DengLiujie1RenYuan1LuBin2WeiChaohai1(11CollegeofEnvironmentalScienceandEngineering,SouthChinaUniversityofTechnology,Guangzhou510006,China;2.JingtianEnvironmentalProtectionTechnologyCo.Ltd.,Gguanzhou510640,China)AbstractToxicpollutantsfromcokingwastewaterhavenegativeimpactsonnitrifyingbacteriaandcanun2derminethestabilityofnitrificationprocess.ThisstudyinvestigatedawastewatertreatmenttechniqueofA/O1/H/O2basedonthewatermonitoringdata,severalmajorpollutantswerefoundtohaveinhibitoryeffectonnitrifi2cationinthesecondaerobicfluidizedbed.Theresultindicatedthatphenol,SCN-andquinolinecouldinhibitthenitrificationprocess,EC50valuesofthepollutantwere34126,27815and73124mg/L,respectively.Inordertoreachtheoptimumoperatingconditionofthesecondaryaerationprocess,C/Nratioshouldbe413/1,pH8815andDO45mg/L,underthisconditionammonialevelintheeffluentwaslessthan5mg/L.ItshowedthatthecokingwastewaterbiologicaltreatmentadoptingA/O1/H/O2couldholdstronganti2inhibitoryeffectoftoxicpollutantsandalsoachievedlow2powerhigh2performancenitrification.Keywordscokingwastewater;nitrification;toxicpollutants:(20777018);(863)(2006AA06Z378);(2008BAC32B0621):2009-08-11;:2009-09-28:(1985),,,E2mail:[e-mail]3,,A2/OA/O/AA2/O2,,,,;,,,(31h),,[1][2],,[35],©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:A/O1,,;H/O2A/O,,;,,,11A/O1/H/O2Fig11A/O1/H/O2biologicalprocessforcokingwastewatertreatment112FA2004();Spectrumlab22pc();pHS23CpH();JPBJ2608();721(),,,113,3,,60120mg/L,2321©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(12)2,,SCN-Fe3+1141.4.1[6],:=C0-A-C0-BC0-A100%:At,mg/L;Bt,mg/L;C0,mg/L;t,th,h1.4.2EC501.4.1,,,22111.1,A/O1/H/O220084,3,2008712,11Table1AverageconcentrationsofmajorindicatorsandremovalratesindifferentbiologicalprocessesCOD(mg/L)(%)(mg/L)(%)SCN-(mg/L)(%)NH+42N(mg/L)(%)pH1214301203.41248.2364700.66999.89574.4407.4291200.24649.13767.2108.5102650.07712.6722.496.47.2,COD,C/N4.3/1,pH,,Na2CO3pH8.08.5,,,45mg/L,,3321©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(15mg/L),,12d,,,5mg/L,2,,SCN-8,;94321©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[7],99%,,1.3,,,,4541580mg/L,560mg/L,,,3h,3h15mg/L,3h0196%,,,15mg/L,,15mg/L,,,15mg/L,213,2001000mg/L,0580mg/L1.3,,,,[8]:120mg/L23h,15h,15h;110mg/L20136%,230380mg/L,,34184%7811%;,,,,48mgN/L200mg/L,,[9];,,,,,,,,,2.4,5321©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[10]GC/MS,40%[11],,,,2.5,,,1.4,2,,EC50,232Table2Effectofinitialconcentrationsofdifferentpollutantsonnitrificationinhibitionrateincertainreactiontime(mg/L)3h(%)(mg/L)15h(%)(mg/L)18h(%)15.050.9611020.36303.4230.0736.9523034.846040.7548.9482.0638078.109056.9061.6590.2243089.1412073.9781.3093.1058089.6815092.123EC50Table3Curvefittingequationoftestedpollutantconcentrationsvs.ammoniaoxidationinhibitionrateandcalculationofEC50EC50(mg/L)y=-0.0002x3+0.0044x2+2.7511x-41.377R2=0.99534.26y=-3E-06x3+0.0025x2-0.4925x+47.644R2=0.9999278.5y=7E-05x3-0.0215x2+2.696x-59.629R2=0.998573.246321©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[11]22,,,3A/O1/H/O2,;3EC5034126,2781573124mg/LA/O1/H/O2,A/O1,,H/O2,,5mg/L,40mg/L,A/O1/H/O2[1]..,2000,26(12):5156[2],,,.A/O2GC/MS.,2006,26(11):17851791[3],,..,2007,33(2):4649[4]JeongY.S.,ChungJ.S.Biodegradationofthiocyanateinbiofilmreactorusingfluidized2carriers.ProcessBiochem.,2006,41(3):701707[5],,,..,1997,18(1):2123[6],,,..,2008,29(10):27982803[7]NeufeldR.,GreenfieldJ.,RiederB.Temperature,cya2nideandphenolicnitrificationinhibition.WaterRes.,1986,20(5):633642[8],,,..,2009,60(12):30893096[9]KimY.M.,ParkD.,JeonC.O.,etal.EffectofHRTonthebiologicalpre2denitrificationprocessforthesimulta2neousremovaloftoxicpollutantsfromcokeswastewater.BioresourceTechnology,2008,99(18):88248832[10],,,..,2007,27(7):17[11],,.A12A22O.,2002,22(1):343973