复合式厌氧反应器预处理低温城市合流制污水中试杨健

杨　健,　居志华,　吴　敏(同济大学环境科学与工程学院,上海200092)　　　:　采用有效容积为18.55m3的复合式厌氧反应器(AHR)处理低温、低浓度城市合流制污水,中试结果表明,在水温为9.5～12℃、水力停留时间为3.9h的条件下,对SS和COD的去除率分别达到了84.5%和36.13%;经处理后溶解性COD占总COD的比例由进水的49.69%提高到出水的73.08%,可生化性得到了明显改善;在COD/SO2-4值为1.60即SO2-4充足的情况下,硫酸盐还原菌(SRB)较产甲烷菌(MPB)占优势,对SO2-4的去除率高达73.26%。可见,采用AHR预处理低温城市合流制污水是可行的。　　:(863)(2003AA601020)　　:　复合式厌氧反应器;　城市合流制污水;　低温:X703.1　　:C　　:1000-4602(2007)05-0058-04Pilot-scaleTestofAnaerobicHybridReactorforPretreatmentofLow-temperatureCombinedMunicipalSewageYANGJian,　JUZhi-hua,　WUMin(SchoolofEnvironmentalScienceandEngineering,TongjiUniversity,Shanghai200092,China)　　Abstract:　Anaerobichybridreactor(AHR)withaneffectivevolumeof18.55m3wasusedtotreatlow-strengthandlow-temperaturecombinedmunicipalsewage.Thepilot-scaleexperimentresultsshowthattheremovalratesofSSandCODattain84.5%and36.13%respectivelywhenthehydraulicretentiontime(HRT)is3.9hoursandthetemperatureisbetween9.5℃and12℃.TheproportionofSCODintotalCODincreasesfrom49.69%intheinfluentto73.08%intheeffluent,andthebiodegrad-abilityisimproved.WhentheratioofCOD/SO2-4is1.60whichmeansthatSO2-4isabundant,sulfate-reducingbacteria(SRB)aremorepredominantthanmethane-producingbacteria(MPB)andtheremovalrateofSO2-4attains73.26%.Therefore,itcanbeconcludedthatAHRissuitableforpretreatmentoflow-temperaturecombinedmunicipalsewage.　　Keywords:　anaerobichybridreactor(AHR);　combinedmunicipalsewage;　lowtemperature　　。,:;;(COD1000mg/L);。,,[1～6]。18.55m3(AHR),。AHR58第23卷　第5期2007年3月　　　　　　　　　　　　中国给水排水CHINAWATERWASTEWATER　　　　　　　　　　　　　Vo.l23No.5Mar.2007,9,20051216—200626,53d。1　材料和方法1.1　AHR1。1　Fig.1　Schematicdiagramofapparatus　　UASB(AF),UASB。,,。,、2.5、1.4m,5.30m,18.55m3。2.60m;50mm,2.60m,9.20m3。,。,。UASB,:,;,;,SS。AHR、、4,,,,。,。,。50、100、180、220、270360cm。1.2　。()、,pH7.0～7.5,9.5～12℃,COD190～430mg/L(252mg/L),BOD572～250mg/L,SS45～180mg/L,TP2～4mg/L,TN27～56mg/L,NH3-N10～35mg/L,SO2-4110～220mg/L。COD/SO2-41.24～2.12,1.60。COD、BOD5、NH3-N、TN、TP、SO2-4《》。2　结果和讨论2.1　SS。,,,,SS。,Law-ler,,,,SS。,AHRSS,84.5%(1)。1　SSTab.1　SSremovalinAHRunderdifferenttemperatures2005813—96200597—2720051216—200626HRT/h5.64.03.9/℃27.5～29.520.5～30.09.5～12SS/%88.789.584.5　　1,SS,,AHRSS,。2.2　,COD、SS,,(2),。2,COD(SCOD)COD(S/C)49.69%73.08%,SCODCOD,、SCOD,。59杨　健,等:复合式厌氧反应器预处理低温城市合流制污水中试第23卷　第5期,,、,。2　、Tab.2　ComparisonofbiodegradabilitybetweeninfluentandeffluentCOD/(mgL-1)/(mgL-1)/%SCOD/(mgL-1)/(mgL-1)/%S/C/%/%25216136.131251176.149.6973.082.3　,(SRB)、、,SO2-4,S2-。(MPB),,。MPBSRB,。,SRBMPB。,,(50～200mg/L),SRB。ChoiRim:COD/SO2-41.7～2.7,SRBMPB;COD/SO2-42.7,MPB,;COD/SO2-41.7,SRB,MPB。COD,SO2-4(156.9mg/L),COD/SO2-41.60,SO2-4,SRB,MPB。SRB3。3　SRBTab.3　Distributionofsulfate-reducingbacteriaandfermentationbacteriaalongthealtitude/cmSRB/(g-1)/(g-1)502.0×1062.3×1071001.5×1064.1×1071803.7×1051.4×1072203.8×1071.6×1072704.8×1072.0×1063604.7×1046.5×106　　3,SRB,,,,。　　AHRSO2-442.6%～90.7%,73.26%,H2S,,AHR。2.4　CODAHR1.08～2.60kgCOD/(m3d),COD36.13%,:CODCOD(CODss),,CODssVFACH4,,COD。,CODCODssCOD。,。,COD423mg/LCODssCOD69.95%,COD64.3%。,(SMP)COD[7～9]。AHRUASBCOD4,COD,AHRCOD。4　AHRUASBCODTab.4　ComparisonofCODremovalefficiencybetweenAHRandUASBT/℃HRT/hVup/(mh-1)COD/(mgL-1)COD/%UASB115.8365037～38UASB27～184～14100～90045～47UASB37～2712～42205～32631～56AHR9.5～123.91.3425236.13　:　1、2、3WangK、deManA.W.A.Colli-vignarelli。3　结论①　SS,AHRSS,84.5%。②　,CODCOD49.69%73.08%。、,。③　COD,60第23卷　第5期　　　　　　　　　　　　　　中国给水排水　　　　　　　　　　　　。SO2-442.6%～90.7%,73.26%。④　(9.5～12℃),AHRCOD36.13%,UASB,AHRCOD。:[1]　SeghezzoL,ZeemanG,JulesBvanLier,etal.Areview:theanaerobictreatmentofsewageinUASBandEGSBre-actors[J].BioresourTechnol,1998,65(3):175-190.[2]　LettingaG,RebacS,ZeemanG.Challengeofpsychroph-ilicanaerobicwastewatertreatment[J].TrendsBiotechn-ol,2001,19(9):363-370.[3]　KalkerTJJ,MassJAW,ZwaagRR.Transferandac-ceptanceofUASBtechnologyfordomesticwastewater:Twocasestudies[J].WaterSciTechnol,1999,39(5):219-225.[4]MironY,ZeemanG,vanLier,etal.Theroleofsludgeresidencetimeinthehydrolysisoflipids,carbohydratesandproteinsduringtheanaerobictreatmentofdomesticsewage[J].WaterRes,2000,34(4):1705-1713.[5]　ZeemanG,LettingaG.Theroleofanaerobicdigestionofdomesticsewageinclosingthewaterandnutrientcycleatcommunitylevel[J].WaterSciTechnol,1999,39(5):187-194.[6]　ElmitwalliTA,SklyarV,ZeemanG,etal.Lowtempera-turepre-treatmentofdomesticsewageinananaerobichy-bridorananaerobicfilterreactor[J].BioresourTechnol,2002,82(3):233-239.[7]　SollfrankU,KappelerJ,GujerW.Temperatureeffectsonwastewatercharacterizationandthereleaseofsolubleinertorganicmaterial[J].WaterSciTechnol,1992,25(6):33-41.[8]　NachaiyasitS,StucheyDC.Effectoflowtemperaturesontheperformanceofananaerobicbaffledreactor(ABR)[J].JChemTechnolBiotechnol,1997,69(2):276-284.[9]SchienerP,NachaiyasitS,StuckeyDC.Productionofsol-ublemicrobialproducts(SMP)inananaerobicbaffledreactor:composition,biodegradabilityandtheeffectofprocessparameters[J].EnvironTechnol,1998,19(4):391-400.:13482634011E-mail:[e-mail]:2006-10-17(上接第57页),,130mg/LPFSTP1mg/L,PAM。②　,,PFS90～95mg/L,、、TP1mg/L,《》(GB/T19923—2005)。③　,12～14h;,。④　0.25～0.30/m3,。:[1]　.(4)[M]