化学混凝UASB工艺处理城市生活污水聂丽君

14　1Vol.14　No.120042JOURNALOFMAOMINGCOLLEGEFeb.2004:1671-6590(2004)01-0018-03—UASB聂丽君1,刘长青2,李红梅2,高明峰2(1.,525000;2.,100083)　:　UASB在处理城市生活污水中有着广泛的应用前景;但在运行过程中,未充分降解的悬浮物易在UASB反应器中堆积,导致已颗粒化的厌氧污泥的活性降低,影响处理效果。作者采用化学混凝预处理法来探讨对UASB的运行影响。通过实验得知化学混凝实现了去除进水中的SS,在FeCl3的投入量为70mg/L,HRT为2h时,UASB的COD去除率达50%～60%。:　UASB反应器;化学混凝;生活污水:X703.1　　　　　　　:A　　,〔1,2〕,(UpflowAnaerobicSludgeBlan-ket,UASB)、、、〔3〕,;,,UASB,,,UASBSS;,0.1mm,,、、、,。1　化学混凝—UASB工艺流程及设备　　　　—UASB1。,SS,UASB。UASB10mm,14L,22:1,,,。图1　化学混凝—UASB工艺流程图2　UASB反应器试验条件　　,1。,:2003-11-29;:2003-12-10　:(1971-),,,,.2。1　,℃pHCOD,mg/LCODd,mg/LSS,mg/L11～256～8120～50070～20060～700　　　　　　　　:CODCOD,CODdCOD。2　VSS/SS,%,gVSS,gVSS/L0.4595168.312.03　UASB反应器运行效果　　UASB,6,,,3。3　dHRTh10-3m3/dm3/m2.h,kgCOD/m3.d6012280.190.71.2209.5350.240.91.5206560.391.42.4404840.582.13.6、CODCODd,〔4〕。2,3。图2　UASB进出水COD浓度及其去除率曲线　　　　　　图3　UASB进出水CODd浓度变化曲线2,,HRT=12hHRT=9.5h,,COD,60%;HRT=6hHRT=4h,,COD100mg/L,83.9%,,UASB。3,UASBCODd,,UASB,SS,,,UASB。,UASB,SS。4　化学混凝试验　　UASBSS,UASB。,。,61L。FeCl3,0mg/L,20mg/L,40mg/L,60mg/L,80mg/L,100mg/L,191　　　　　　　　　　:—UASB70mg/L,COD55%〔5〕。(70mg/L),20L,,HRT2h,4,。,5。4　,min20310202050　　　　　:17min,2h。5　、CODCOD,mg/LCOD,mg/LCODd,mg/LCOD,%379225151405,70mg/L,COD40%,(55%),;CODCODd,CODs,,SS。5　化学混凝—UASB工艺运行效果　　—UASB1。HRT2h,70mg/L,,CODCODd,4、5。图4　UASB进出水COD浓度及其去除率曲线　　　　图5　UASB进出水CODd浓度及其去除率曲线,70mg/L,UASB(HRT=2h),COD50%～60%,CODd40%～50%,SS。6　结论　　(1),UASB,4～6h;(2)70mg/L;(3)70mg/L,HRT4h2h,—UASBCOD50%～60%,CODd40%～50%;(4)CODs,,UASB。〔〕〔1〕　.〔M〕.:,1998.469-490.〔2〕　Collivignarelli.Anaerobic-AembicTreatmentofMunicipalWastewaterswithFull-ScaleUpflowAnaerobicSludgeBlanketandAttachedBiofilReac-tors.Wat.sci.Tech〔J〕.,1990,22:475-482.(下转第24页)20　　　　　　　　　　　　　　　　　2004〔〕〔1〕　.《》.,2003-03-26().〔2〕　..(),2002,18(2):131-134.〔3〕　,..,2000,(4):29-32.〔4〕　,..,2000,19(3):23-26.〔5〕　..,1998,(4):22-23.〔6〕　..,2002,26(3):65-69.CurrentSituationandCountermeasuresoftheTreatmentForHouseholdGarbageinMaomingCityYANGJian-she,YINAi-guo,GAOHua-ye,LIYu-ke(MaomingCollege,Guangdong,525000,China)Abstract:ThisistoanalyzetothecurrentsituationofcityhouseholdtreatmentinMaoming,GuangdongProvinceinthispaper.Theresultsshowthateachpersonproduces1.2kgwasteonaverageperday,andthedailytotalismorethan350t.ButtherehasonlyonewastedisposalsitenamedJintang,withatreatingcapacityofabout100twasteperday,whichcannotsatisfytherequirementofthewastetreatment.Thereisnoequipmenttoclassifyhouseholdgarbage,andnotenoughmoneytoputin.Andrecyclingresourcerateisverylow.Thesources,amountsandphysicalcharac-teristicsofliferubbishofMaomingcityarestudiedcarefullyinthisarticle,andsomecountermeasuresandsuggestionsbasedontheactualsituationofthecityhavebeenputouthere.Keywords:cityhouseholdgarbage;currentsituation;countermeasure;Maomingcity(上接第20页)〔3〕　、、.UASB〔M〕.:,2002.〔4〕　《》.〔M〕.:,1994.〔5〕　.UASB〔M〕..2003.55(3):37-38.AStudyofChemicalCoagulationandUASBProcessonTreatingUrbanSewageNieLi-jun1,LiuChang-qing2,LiHong-mei2,GaoMing-feng2(1.MaomingCollege,Maoming,Guangdong525000,China;2.SchoolofChemicalandEnvironmentalEngineering,CUMT,Beijing100083,China)Abstract:UpflowAnaerobicSludgeBlanket(UASB)processhasabroadprospectofapplicationtotreatinglowcon-centrationsewagedue.SuspensiorsundegradedsufficientlytendtocompileinUASBreactorduringthedisposeoflow-concentratesewagewithUASBprocess,whichleadstotheactivedecreaseofanaerobicsludgeexistinginparticlemorphology,thereforeaffectingthetreatmenteffectofUASBprocess.ChemicalcoagulationisappliedtopretreatsewageforstudyingitsinfluenceontherunningofUASBprocess,theresultsshowthatchemicalcoagulationcansuc-cessfullyremovetheSSininletwater,whenthedoseofFeCl3is70mg/L,HRTistwohours,andtheremovalrateofC0Disabout50%～70%,satisfactoryresultsareobtained.Keywords:UASBreactor;chemicalcoagulation;sewage24　　　　　　　　　　　　　　　　　2004