SBR工艺中污泥负荷对丝状菌污泥膨胀的影响周利

SBR周　利　彭永臻　高春娣　丁　峰(哈尔滨建筑大学市政环境工程学院)　　　　在严格控制SBR工艺试验运行条件下,就污泥负荷对丝状菌污泥膨胀的影响规律进行了研究。结果表明,高污泥负荷不仅不是导致污泥膨胀的因素,而且对污泥膨胀有抑制作用;在污泥负荷降低到一定程度(“临界负荷”)后,SVI迅速升高,加速污泥膨胀的发生。还发现,进水底物浓度与“临界负荷”及低于“临界负荷”后污泥膨胀的最大程度SVImax之间呈负相关关系,且都可用微生物的选择性理论来解释。　污水处理　SBR　丝状菌膨胀　污泥负荷　SVI　　,95%。[1],。,,,。,Pipes32,0.25～0.45kgCOD/(kgMLSS·d),SVI。ChaoKeinath[2],0.6～1.3kgCOD/(kgMLSS·d)1.8kgCOD/(kgMLSS·d)。[3],,0.05kgBOD/(kgMLSS·d);0.5kgBOD/(kgMLSS·d)。,SBR,。,,。1　试验装置与方法。、、、,、、、,。1。SBR,38L,,20℃,DOORP。。、、。,,。,:①　≥3.0mg/L;②　N、P,BOD5∶N∶P=100∶5∶1;③　pH6.5～8.5;·11·　　　1999Vol.15　　　　　　　　　　CHINAWATER&WASTEWATER　　　　　　　　　　No.6(59778024)　④　2000mg/L。1.ORP　2.DO　3.4.　5.1　SBRSBR,,:　Ns=S0V1X(V1+V2)·T24　Ns———,kgCOD/　　　　　　　(kgMLSS·d)　　　S0———(CODCr),mg/L　　　V1———,L　　　V2———,L　　　T———,h　　　X———,MLSS,mg/L2　试验结果与分析2.1　,,,,。23COD1000mg/L、6.7kgCOD/(kgMLSS·d)SVI。2.2　2.2.1　SVI,,SVI。,SVI;,SVI,SVI;(“”),SVI,。4COD1000mg/L,SVI。2　SVI3　SVI4　SVI2.2.2　“”COD1000、800、500、300、200mg/L,、。,“”,“”“”,,,5。·12·1999Vol.15　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　No.6Chudoba[4]。,μmaxKs,,;,6。SBR,,,,,,“”。5　“”6　2.2.3　SVImax,“”,SVI(SVImax),SVI。,SVImax“”,,SVImax,7。6。7　SVImax3　结论①　,,。②　,,,“”;“”。③　,,SVImax,。1　,..,19992　ChaoAC,KeinathTM.Influenceofprocessloadinginden-sityonsludgeclarificationandthickeningcharacteristics.WaterResearch,1979;133　..4　ChudobaJ,GrauP,OttvaV.Controlofactivatedsludgefila-mentousbulkingⅡ.SelectionofMicroorganismsbyMeansofaSelector.WaterResearch,1973;7:　:150008　202　:[phone]:[phone]E-mail:[e-mail](1998-12-04)·13·1999Vol.15　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　No.6CHINAWATER&WASTEWATERVol.15No.6　　　June1999ABSTRACTSAStudyonHaloaceticAcidsControlinDrinkingWaterTreatmentProcessandDistributionSystemLiShuang　　ZhangXiaojian　　LiuWenjunetal.(Depart.ofEnviron.Sci.andEng.,QinghuaUniv.,Beijing100084,P.R.China)ZhangSuxia　　JinWeirong　　JiangYingetal.(BeijingNo.9WaterWorks,Beijing,P.R.China)　　Abstract:Characteristicsofhaloaceticacids(HAAs)removalwerestudiedinBeijingNo.9Waterwords.ChangesofHAAsconcentrationinfivedistrbubionsystemsservedbyfivewaterworkswerealsomeasured.Theresultsshowedthat:(1)HAAsremovalefficiencywaslowbyconventionaltreatmentprocess,witharemovaloflessthan20%.ActivatedcarbonhadasatisfactoryremovalforHAAs,witharemovalof50%～85%dependingonoperationtimeofcarbonbed,whichconsistsof40%～70%oftotalHAAsintherawwaterafterpre-chlorination.Bothcarbonadsorptionandbio-logicaldegradationinthecarbonbedhadroughlythesamecontrbutiontotheHAAsremoval.(2)HAAsinthedistributionsystemwasinfluencedbymanyfactors.Inthefrontpartofpipenetworks,HAAsconcentrationcouldincreaseinthesituationofshorthydraulicretentiontimeinclearwellandhighresidualchloring,whileintheendpartwherelowresidualchlorineconcentrationexisted,HAAsconcentrationwasreducedbymicrobilogicaldegradationinthepipenetworks.Keywords:watertreatment　disinfectionbyproducts　haloaceticacids　drinkingwaterdistributionsystem　activatedcarbonAStudyofBiofilmThicknessinThree-PhaseBiologicalFluidizedBedPanTao　　WuYangshan　　WangShaotang(BeijingAcademyofEnviron.ProtectionSci.,Beijing100037,P.R.China)Abstract:Bythewayofexperimentsonafullscalethree-phasebiologicalfluidizedbedreactor,therelationshipsbetweenbilogi-calfilmthicknessandtraditionalprocessparameterssuchasorganicremovalrate,volumetricloadingrateandsludgeconcentrationwerestudiedanddiscussed.Itwasproventhatthebiofilmthicknesswasoneofkeyparametersinoperation,andtheoptimumbiofilmthickne～110μmKeywords:wastewatertreatment　three-phasebiologicalfluidizedbed　biofilmthicknessremovalefficiencyResearchonManagementSystemforCityWaterSupplyZhangHongwei　　ShanJinlin(SchoolofCivilEng.,TianjinUniv.,Tianjin300072,P.R.China)YanShanghong　　LiYimin(TianjinWaterSupplyGroupCorp.Ltd.,Tianjin,P.R.China)Abstract:Themajorcomponentsinmanagementsystemforcitywatersupplywerestudied.Adatabasedealingwithtechnicalandeconomicdatainthecitywatersupplywassetupbyusingcomputer.Thedatabasecansatisfytheneedsoninformationcollectionandstatistics.Tousethedatabasecomprehensivelyprovidedsupportfordecisionmakingatallmanagementlevels.Inthissystem,in-formationonwatersupplywasdividedintothreelevelstocarryoutmanagement.Ahotlinetelephonewasusedasexternalreceptionofcitycustoms,acomputerlocatedinlowestlevelwasusedborecordallinformation.Meanwhile,asremotedistancenode,eachcomputerwasconnectedwithanothertwolevelsbythemodeofdealingwithModem.Longdistancecommunicationamongeachlevelwasrealized.Keywords:municipalwatersupply　management　database　longdistancecommunicaltionInfluenceofSludgeLoadonFilamentousSludgeBulkinginSBRProcessZhouLi　　PengYongzhen　　GaoChundi(SchoolofMunic.andEnviron.Eng.,HarbinUniv.ofArchitec.andCivilEng.,Harbin150008,P.R.China)Abstract:AstudyontheeffectofsludgeloadingonfilamentoussludgebulkinginSBRisdescribedinthispaper.Theresultsindicatedthathighsludgeladingratewasnotthefactorcausingfilamentoussludgebulking.Onthecontrary,itrestrainedfilamentoussludgebulking;whensludgebulkingloadingratewasreducedtoacertainvaluewhichwascalledcriticalload,SVIincreasedsharplyandsludgebulldinghappened.Theresultsalsoindicatedthatanegativecorrelationexistedbetweeninfluentorganicco