低氧活性污泥法脱氮除磷工艺生产性研究朱晓君

朱晓君　周增炎　　(同济大学)　　高廷耀(国家城市污染控制工程研究中心)　　　　针对日益严重的水体富营养化问题,结合我国城市污水处理现状,通过低氧曝气增进传统活性污泥法工艺的脱氮除磷功能,为现有污水处理厂的改造及新建具有脱氮除磷功能的污水处理工艺提供依据。生产性试验表明,在一定的条件下,降低反应器内溶解氧水平至0.5～1.0mg/L,在保证COD降解的同时系统的脱氮能力显著提高,同时系统的除磷能力也有很大的提高。对低氧活性污泥法工艺的脱氮除磷机理进行了初步探讨,并对工艺参数及其控制方法提出建议。　　　脱氮除磷;低氧曝气;微环境;同步硝化反硝化1　　　,,,。,,,,。,,,,。[1],,。2　、　　,,1。　　8,BOD。BOD750-120mg/L,411BOD300mg/L,500-120mg/L。,。,,DO02.5mg/L。,BOD10mg/L、SS10mg/L、NH4-N1.0mg/L.4　　　。。CAST。CAST,,,。CAST,,,,。CAST,。CAST。5　1.　Goronszy,M.C.,Eckenfelder,W.W.(1986)Floc-load-ingbiosorptioncriteriaforthetreatmentofcarbohydratewastewaterProc.41stIndustrialWastewaterConference.PurdueUniversity,USA.2.　Goronszy,M.C.,(1989)SelectordesignforhighCODwastewaters-Acasehistory.Proc.IndustialWastewa-tersSymposium,WaterPollutionControlFederationConference.SanFrancisco.USA.3.　Goronszy,M.C.,(1989)BatchreactortreatmentofdairywastewatersProc.44thIndustrialwastewaterCon-ference,PurdueUnversity,USA.121997　Vol.131　　　1。　　1CODCr2hNH3-NNO-3-NNO-2-Nα-TKNCuSO4,K2SO4,H2SO4PO3-4-PTP,DOMLSS105℃2hMLVSS600℃0.5h3　　　199745。[2]。,、2h。2,3。　　,,COD、TN、TP。20%,COD95%,COD,COD。,TKN、TN90%、80%。NO-3-N22.5mg/L(,),TKN43.5mg/L,NO-3-N7.0mg/L,TKN6.3mg/L,。,21.7%,12.1%,66.2%。,。4　4.1　低氧脱氮机理　　,。,,,、SBR、。()()。2　　　2Qm3/dHRThdkgBOD5/m3·dkgBOD5/kgMLSS·d℃MLSSmg/LMLVSSmg/LSVImL/gC/N2100010.3150.7210.1461.320-254931291679.711.8　　3　　(mg/L,)CODCrBOD5NH3-NNO-3-NNO-2-NTKNTNPO3-4-PTP　797.3330.521.51.360.1266.267.71.9411.8　40.821.74.87.380.247.114.70.310.8794.9%93.4%89.3%78.3%93%　　:,DO,2。,、;,,,。　　,,。,131997　Vol.13、。,,。　　。,[3]。,,N2O[4]。ThomasJ,Gereau:NO-2,N2O,N2ONO-20.3%10%。N2O[5]。K.OKADA,。,N2O,NO-3N2O。N2ON2,,N2。　　,。,,。4.2　低氧除磷机理　　,。,,,,β(PHB);,,PHB,,PO3-4-PATP,P,。,。[6],,,。,,,,。(、、),。,PHB:①ATP,;②,。,、,、,。,。,1.5%～2.0%,,3.7%,6.7%,。5　5.1　溶解氧　　,、。,;,,、,。,,TN。、,。,:0.3～0.8mg/L,1.0mg/L,1～2mg/L,0.3～1.5mg/L[7]。0.5～1.0mg/L,。、,。5.2　活性污泥　　。,BoehnkeAB。,,,。,,,[2]。,,。,Boehnke“————”,,。,ABAA15%[7]。,,141997　Vol.13。,,,,,,,。,,;,,。4～5g/L,0.15～0.20kgBOD5/kgMLSS·d,,。5.3　C/N比　　C/N,。[8],C/N≥2.86。,,C/N10,。,。5.4　碱度　　,1gNH3-N7.14,1gNO-3-N3.57g。,,,,、。5.5　回流比　　、,A/O,NO-X-N。,,,。1.2～1.5,。6　6.1　DO　　,EVITATM,DO。,DONH3-N、NO-X-N。DO,NH3-N、NO-X-N;DO,NH3-N、NO-X-N。,DO,,NH3-N、NO-X-N。DO0.5～1.0mg/L,NH3-N5mg/L、NO-X-N7mg/L。6.2　NH3-NNO-X-N　　,Dr.LangeNH3-N、NO-X-N,。,,,NH3-N。NH3-N,。6.3　建议　　、,。DO、NH3-NNO-X-N,,,,、、。,,。,,。7　　　①　,DO0.5～1.0mg/L,COD,。,COD95%,TN80%,TP90%。　　②　,,。,。　　③　,0.873kWh/BOD5,10%,。　　④　,,C/N、。。　　⑤　、,,。8　1.　　　　19972.　　MLSS　,Vol.19,No.8,19933.　RobertsonL.A.“AdvancedCoursesonenvironmentalbiotechnology”DelftUniversityofTechnology,Netherla-151997　Vol.13金　伟　　范瑾初(同济大学)　　　　粉末活性炭在硅藻土预涂膜过滤中的应用研究(简称PDF技术)结果表明,PDF技术用于饮用水的深度处理,不仅能进一步降低水浊度,而且快速、有效地去除水中的有机污染物,特别是对卤代烃的去除更为有效,同时不致产生微生物大量繁殖的问题。　　　粉末活性炭;硅藻土;吸附;预涂膜过滤1　　　,,,。　　,。,(MF、UF),“”。,。　　,,,,“PDF”。2　2.1　PDF工艺简介　　,、、。1.　　:“”,15～30min,1～2mm。1　PDF　　1.　　2.　　3.4.DE　　5.　　:,。,,“”,,、。　　:,,。8～10L/s·m2,5min。　　nds19944.　ThomasJ.Gorear“ProductionofNO-2andN2ObynitrifyingBacteriaatreducedconcentrationofoxygen”Appl.Environ.Microbio.No.9,19805.　K,OKADA“Amechanismforbiologicaldenitrifi-cationinaeratedlagoonsystem”WaterpollutioncontrolindevelopingcountriesNo.2,19786.　　　　　19927.　BruceE.Rittmann,WayneE.LangelandSimulta-neousdenitrificationwithnitrificationinsin-glechanneloxidationditchesJournalWPCF,Vol-ume57,Number　4　19858.　　　1996　　:　95　　:200092　(　1997-06-17)161997　Vol.13CHINAWATERANDWASTEWATER(1997　Supplement)Volume　13December.27,1997MAINCONTENTSTHESESANDRESEARCHESWASTEWATERTREATMENTINCONSTRUCTEDDOWNFLOWREEDBEDS:EXPERIMEN-TALSTUDIESANDDESIGNEQUATION(4)………………………………………………………G.Sun　　K.R.Gray　　A.J.Biddlestone(TheUniversityofBirmingham,UK)　　Abstract:Studieswerecarriedoutonwastewatertreatmentusingconstructeddownflowreedbeds.Experimen-talresultsindicatethatsignificantBOD5andCODreductionscanbeobtainedinthesebedsowingtotheirgoodare-obictreatmentability,considerableamountsofSS.PO4-PandNH4-Ncanberemoved,andtheremovalratesofBOD5andCODincreasewithorganicloadandfeedingfrequencyanddecreasewithhydraulicloading.Adesigne-quationforthisdownflowreedbedswassetupbasedonanassumptionofBOD5removalcausedbytheconsecutiveprocessesofadsorptionandaerobicmicrobialdecomposition.　　Keywords:Constructedwetland;Downflowreedbed;Wastewatertreatment.APPLICATIONOFCYCLICACTIVATEDSLUDGETECHNOLOGYININDUSTRIALWASTEWATERTREATMENT(7)……………………………………………………………………M.C.Goronszy(InterTech,Inc)　　　　　　MingquanZhu　　K.Wutscher(Schueffl&ForsthuborConsulting)　　Abstract:CyclicActivatedSludgeTechnology(CAST)isaviablechoiceforlarge-scalemunicipalwastewatertreatment,particularlywhennutrientremovalisofamajorconsideration.TreatmentofindustrialwastewaterbyCASThaspracticedformanyyears.Thispaperdiscussesthegeneraloperationprinciplesofthetechnology.Twocasehistories,oneforpapermillwastewatertreatmentandtheotherforchickenprocessingwastewatertreatment,arepresented.　　Keywords:CyclicactivatedsluDgetechnology(CAST);Industrialwastewatertreatment;Papermilleffluenttreatment;Chickenprocessingwastewatertreatment.FULL-SCALESTUDYOFNITROGENANDPHOSPHORUSREMOVALBYLOWDOACTI-VATEDSLUDGEPROCESSES(12)…………………………………………………………………XiaojunZhu　　TingyaoGao　　ZengyanZhou(Ton