多级污泥厌氧消化工艺的开发王凯军

　王凯军　王晓惠　吴　冰　　　传统污泥厌氧消化技术复杂、费用较高,而延时曝气的低负荷工艺投资高、能耗高。介绍了多级污泥厌氧消化工艺的开发过程,该工艺由水解酸化、固液分离及UASB三段构成,经过试验研究和工程验证,表明该工艺可使污泥在较短的总停留时间(t=7d)达到稳定。　多级污泥厌氧消化　水解酸化　固液分离　UASB　污泥稳定　　,,。、,,。,20%～40%,。,,。,()、SBR。,、,。,、,;,、40%～50%,,,。kW1000,m3,70。10%,700,50%。,。,,;,、,,。。1　1.1　。。19779873。4286。。,20～30d。,。Ghosh,70,,,,。,,。Ghosh,。、、,。1.2　70,(AF)、(UASB)(FB)。34　　　　Vol.27　No.10　2001DOI:10.13789/j.cnki.wwe1964.2001.10.009,。。Jewell(AFEFB),5%。(),2～3h,,50%。,,。,。,。,70,:UASB、、。。1.3　,,,。,COD25～30g/L,35g/L,pH4.5～5.0。5000m3/d,10d。COD3.0kg/(m3·d),2.0～3.0kgSS/(m3·d)。,,COD5～6kgCOD/(m3·d)。COD,BODSS75.6%,90.8%45.5%。20d(20～30d)。1.0～1.5kgSS/(m3·d),COD2.0kg/(m3·d)。,。,。2　2.1　,,,,。、、,、。。(1)。()。UASB(),。(CSTR),CSTR。,。(2)。,。,,,UASB。。(3)。(80%～90%),。CSTRVFA,。UASB,UASB,。2.2　CSTR20L,。CSTR、,,CSTR。UASB(5L)。　Vol.27　No.10　200135　　　UASB,,,(1)。1　,,35℃。,VSS/TSS45%。,,。,CSTR10d,1d,UASB1d;:CSTR5d,1d,UASB1d。2.3　,。2。,15kgCOD/(m3·d)。UASB5kgCOD/(m3·d)。,UASBCODSS(3a)。(t)7d,COD85%,SS80%～85%;t=12d,CODSS95%。3b,CSTRHRT=5d,CODCOD,CODd/CODt35%～40%,;HRT=10d,,CODd/CODt55%。。CODd,CODd/CODt8.1%。,CSTR2　3　UASB36　　　　Vol.27　No.10　20014　CSTRUASB10d,CODCOD50%;5d,CODCOD30%。,CSTRHRT=5d,。,,CSTRHRT=5d。4a,VFA。CODCOD(CODv/CODt)7%;5d,CODv/CODt25%;10d,20%。CSTR,。UASB,,CODv/CODt5%。4b,,UASB,VFA90%,COD83%。VFA,。CODVFA,UASB,VFA,CODCOD,COD。2.4　,,。,。2000m3/d,,,,。,5。:5d,1d,UASB1d。5　,,UASB,、;,2/3,;99.99%,,。3　,,()。,　Vol.27　No.10　200137　　　,。,。,,。,(t=7d)。参考文献1　SamGhose.Pilot-scaledemonstrationoftwo-phaseanaerobicdiges-tionofactivatedsludge.WatSciTech,1991,23,1179～11882　WangKaijun.IntegratedAnaerobicandAerobicTreatmentofSewage.[P].Netherlands:WageningenAgriculturalUniversity3　HuangJu-Chang,BillTRayandHuangYaojing.AcceleratedSludgeDigestionbyAnaerobicFluidizedBeds:Bench-scaleStudy.ProcIntConfWaterandWastewater,1989.6284　..,19965　,..,,19986　.:[].:,19977　.、.,,1983⊙:100037　:[phone](O)　:2001-2-19　污水处理中减少污泥产量的方法和机理王维斌　　　近年来,由于环境立法要求的提高,需处理的污水量逐渐增多,这使得在污水处理过程中,减少污泥产量十分重要。分析了可能引起污泥产量减少的主要生物过程,探讨了最终电子受体对污泥产量的影响。提出了几种在污水处理过程中减少污泥产量的方法,评述了各种方法的效果及实践中可能会引起的不利影响。　污水处理　减少污泥产量　代谢　活性污泥　　,。,60%[1]。,,,。,。。1　。,()。、、,、、,,(1)。、,,。。、、,。[2],。,。,1　、38　　　　Vol.27　No.10　2001WATER&WASTEWATERENGINEERINGVol.27No.10Ocotober2001ABSTRACTSPilot-ScaleResearchonWastewaterReuseafterDesalinationZhangJiguangetal(1)…………………………………………Abstract:Thefeasibilityinvestigationandpilot-plantresearchonalarge-scalewastewaterdesalinationprojectforTEDA(TianjinEconomicDevelopmentArea)arepresentedbasicallyinthispaper.Thetechnicalprocesshasbeencon-firmedandprovedbythepilot-plantdata.Thetargetandapproachtoestablishthislarge-scalewastewaterreuseprogramareclear.Besidesthesealsoaprimaryinvestigationonthecapitalinvestmentandspecificcostofoutputwaterisdis-cussed.SummaryofFull-ScalePretreatmentofDazhiRiverRawWaterbyaBiologicalContactOxidationProcessDingWeidongetal(7)………………………………………………………………………………………………………Abstract:EffectofbiologicalpretreatmentonconventionalwatertreatmentprocessofHuinanWaterworksinShanghaihasbeeninvestigated.ExperimentalresultsshowedthatremovalefficiencyofNH3-N,color,COD,turbidi-ty,ironandmanganesewere78.7%,24.13%,12.36%,64.43%,48.64%and69.3%respectively,suggestingthattherawwaterqualityisimprovedthroughthebiologicalpretreatmentprocesses.Thequalityofoutputwaterwasalsopromotedandthecostwasreducedafterthebiologicalcontactoxidationprocesshadbeenused.SHARON-ANAMMOXProcessforBiologicalDenitrificationofWastewater:StudyandApplicationZuoJian'eetal(22)…Abstract:Thebasicprincipleandprogressoftwokindsofinnovativebiologicallynitrogen-removalprocesses,SHARONprocessandANAMMOXprocess,arereviewedinthispaper.Then,thecharacteristicsofthecombinedSHARON-ANAMMOXprocessareemphasized.ThefuturedevelopmentandapplicationoftheseprocessesinChinaareprospected.ReformoftheSludgeDischargeSysteminInclined-TubeSettlingTankJiHongjunetal(28)…………………………………Abstract:Thesludgedischargesystemintheinclined-tubesettlingtankintheThirdWaterworksinYangzhouCityhasbeenrebuilt.TheperforatedpipeinVflumewasreplacedbyasmallfunnelbasedcentralizedsludgedischargesys-temandthesteelsludgepipewasreplacedbyVPC-Upipewithsmallerfrictionresistance.Thereconstructionwassuc-cessful,andbylightofthisimprovedsludgedischargesystemtheoperationcycleofthesettlerextendedandtheoutputcapacityincreased,besidesthisalsothelaborintensityinoperationreleased.EutrophicationandFisheryBenefitofYangheRiverReservoirLiFengbin(30)…………………………………………………Abstract:TosolvetherapidspreadingofeutrophicationandtherapiddeclineoffisheryharvestinginYangheReservoir,themutualeffectbetweentheeutrophicationandthefisheryharvestwasstudied.Itisconcludedthatthelat-ter(declinedharvest)itselfcontributestotheforwardanddeterioratestheecologicalenvironmentofthereservoir.Atpresent,10%oftheTPdischargeofthereservoirisutilizedbyfishery,anditshouldbeincreasedto30%ifthefisherypotentialisfullytapped.Inordertocontroltheeutrophicationandimprovethewaterqualitysuppliedtothecityaswellastoraisethefisheryharvestingandtocreateeconomicvalue,theeutrophicationisconsideredapotentialresourceandanecologyharnessmeasurebasedonthefisheryutilizationisprovided.DevelopmentofMulti-StageAnaerobicSl