AO1HO2工艺处理焦化废水硝化过程的实现及其抑制李媛媛

4　6环境工程学报Vol.4,No.620106ChineseJournalofEnvironmentalEngineeringJun.2010A/O1/H/O2李媛媛1　潘霞霞1　邓留杰1　任　源1　卢　彬2　韦朝海1＊(1.,510006;2.,510640)　　,A/O1/H/O2,,。,、,EC5034.26、278.573.24mg/L。(C/N4.3/1,pH8～8.5,DO4～4.5mg/L),5mg/L,//,,A/O1/H/O2。　　　　X703　　　A　　　1673-9108(2010)06-1231-07AchievementandinhibitionofnitrificationincokingwastewatertreatmentbyA/O1/H/O2processesLiYuanyuan1　PanXiaxia1　DengLiujie1　RenYuan1　LuBin2　WeiChaohai1(1.CollegeofEnvironmentalScienceandEngineering,SouthChinaUniversityofTechnology,Guangzhou510006,China;2.JingtianEnvironmentalProtectionTechnologyCo.Ltd.,Gguanzhou510640,China)Abstract　Toxicpollutantsfromcokingwastewaterhavenegativeimpactsonnitrifyingbacteriaandcanun-derminethestabilityofnitrificationprocess.ThisstudyinvestigatedawastewatertreatmenttechniqueofA/O1/H/O2basedonthewatermonitoringdata,severalmajorpollutantswerefoundtohaveinhibitoryeffectonnitrifi-cationinthesecondaerobicfluidizedbed.Theresultindicatedthatphenol,SCN-andquinolinecouldinhibitthenitrificationprocess,EC50valuesofthepollutantwere34.26,278.5and73.24mg/L,respectively.Inordertoreachtheoptimumoperatingconditionofthesecondaryaerationprocess,C/Nratioshouldbe4.3/1,pH8～8.5andDO4～5mg/L,underthisconditionammonialevelintheeffluentwaslessthan5mg/L.ItshowedthatthecokingwastewaterbiologicaltreatmentadoptingA/O1/H/O2couldholdstronganti-inhibitoryeffectoftoxicpollutantsandalsoachievedlow-powerhigh-performancenitrification.Keywords　cokingwastewater;nitrification;toxicpollutants:(20777018);(863)(2006AA06Z378);“”(2008BAC32B06-1):2009-08-11;:2009-09-28:(1985～),,,。E-mail:[e-mail]＊　　,,A2/O、A/O/AA2/O2,,。,,、、;,,,(31h),,[1]。[2],、、、、、,。[3～5],4,,。,,。2007,A/O1/H/O2。,,A/O1/H/O2,,,。1　、1.1　A/O1/H/O2。:A/O1,,;H/O2A/O,,;,,,。1。1　A/O1/H/O2Fig.1　A/O1/H/O2biologicalprocessforcokingwastewatertreatment1.2　FA2004();Spectrumlab22pc();pHS-3CpH();JPBJ-608();721()。、、,,,。1.3　,。3,,60～120mg/L,12326:A/O1/H/O2;COD,、,。65L,2L。1,,5,2min。18L,3,,,,MLSS3000～3500mg/L,3L。Na2CO3,pH8.0～8.5。,30±1℃。,DO4mg/L。10mL,4℃。《》,COD、、、。COD,4-,,N-(1-)-,,SCN-Fe3+。1.4　1.4.1　氨氧化抑制率计算[6],。:α=C0-A-C0-BC0-A×100%:A—t,mg/L;B—t,mg/L;C0—,mg/L;t—,th,h。1.4.2　半抑制浓度EC50计算1.4.1,,,。2　2.1　1.1,A/O1/H/O220084,3,20087～12,1。1　Table1　AverageconcentrationsofmajorindicatorsandremovalratesindifferentbiologicalprocessesCOD(mg/L)(%)(mg/L)(%)SCN-(mg/L)(%)NH+4-N(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。,,,4～5mg/L。,,。12334,。8911,。28。2　8NH+4-N、NO-2-NNO-3-NFig.2　NH+4-N,NO-2-NandNO-3-NconcentrationsofeffluentfromsecondaryaerobicnitrificationstageinAug.　　812,5mg/L,1873.8mg/L,235mg/L;12,224.2mg/L,,。,,1223SCN-100mg/L,COD。39～10,,,,,3。3　9～11Fig.3　NH+4-NandphenolconcentrationsofinfluentandeffluentfromsecondaryaerobicnitrificationstageduringSep.toNov.　　99,,。19206mg/L,1017,,(15mg/L),,12d,,,5mg/L,。2,,SCN-8,;912346:A/O1/H/O2。,、,3。2.2　COD,,[7]。,99%,,。1.3,,,,45。415～80mg/L,560mg/L。,,。,3h,3h。15mg/L,3h0.96%,,,15mg/L,。,15mg/L,,。,15mg/L,。2.3　,200～1000mg/L,0～580mg/L。1.3,,,,[8]。:120mg/L23h,15h,15h;110mg/L20.36%,230～380mg/L,,34.84%78.1%;,,,。,48mgN/L200mg/L。,,[9];,,。,,,,,,,。2.4　,1235460～120mg/L,0～150mg/L。1.3,,,,67。6,,18h,90mg/L23h。7,30mg/L,3.4%;30～60mg/L,40.8%;150mg/L,,。,。,、,[10]。GC/MS,40%[11],。,,,。2.5　,,,。1.4,、2,,EC50,23。2　Table2　Effectofinitialconcentrationsofdifferentpollutantsonnitrificationinhibitionrateincertainreactiontime(mg/L)3h(%)(mg/L)15h(%)(mg/L)18h(%)15.050.9611020.36303.4230.0736.9523034.846040.7548.9482.0638078.109056.9061.6590.2243089.1412073.9781.3093.1058089.6815092.123　EC50Table3　Curvefittingequationoftestedpollutantconcentrationsvs.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=0.998573.2412366:A/O1/H/O2　　3。EC50,,,,,;EC50278.5mg/L,110mg/L,,;[11]--。,,,。3　　A/O1/H/O2,、;3EC5034.26,278.573.24mg/L。A/O1/H/O2,A/O1,,H/O2,。,5mg/L,40mg/L,A/O1/H/O2。[1]..,2000,26(12):51～56[2],,,.A/O2GC/MS.,2006,26(11):1785～1791[3],,..,2007,33(2):46～49[4]JeongY.S.,ChungJ.S.Biodegradationofthiocyanateinbiofilmreactorusingfluidized-carriers.ProcessBiochem.,2006,41(3):701～707[5],,,..,1997,18(1):21～23[6],,,..,2008,29(10):2798～2803[7]NeufeldR.,GreenfieldJ.,RiederB.Temperature,cya-nideandphenolicnitrificationinhibition.WaterRes.,1986,20(5):633～642[8],,,.、.,2009,60(12):3089～3096[9]KimY.M.,ParkD.,JeonC.O.,etal.EffectofHRTonthebiologicalpre-denitrificationprocessforthesimulta-neousremovaloftoxicpollutantsfromcokeswastewater.BioresourceTechnology,2008,99(18):8824～8832[10],,,..,2007,27(7):1～7[11],,.A1-A2-O.,2002,22(1):34～391237