凹凸棒滤料曝气生物滤池对微污染原水的处理研究林子增

35520119JournalofNanjingForestryUniversityNaturalScienceEditionVol．35No．5Sept．2011http//．nldxb．comdoi10．3969/j．issn．1000－2006．2011．05．0192010－08－212011－06－09PAPD1982—。[e-mail]。．J．201135587－90．121221.2100372.210008BAF。33.88%3.141.7m3/m2·h、90min、1∶1～1.2∶1、21.6～32.7℃20d3.14。CODMn、NH3－N14.66%、85.81%53.00%。TU991.2A1000－2006201105－0087－04StudyontreatmentofslightlypollutedrawwaterwithbiologicalaeratedfilterfilledwithattapulgiteLINZizeng1WANGFeng2WANGZheng1XIATing2SHENWei21．CollegeofCivilEngineeringNanjingForestryUniversityNanjing210037China2．NanjingMunicipalDesignandResearchInstituteCo．Ltd．Nanjing210008ChinaAbstractThemicro-pollutedrawwaterwastreatedbybidoyicaloeratedfilterBAFusingmediawithrepresentativefractalcharacteristicsinordertoinvestigatetheattapulgitemediastartupperformanceandthetreatmenteffectoffilter．Duringfilterstartupphasethebiofilmculturingprocessfinishedinabout20daysundertheconditionthathydraulicloadingwascontrolledat1.7m3/m2·hhydraulicretentiontime90mingas-waterratio1∶1—1.2∶1andwatertem-pertature21.6—32.7℃.Theresultsshowedthattheroughsurfaceofattapulgitemediawhosefractaldimensionwas3.14anditimprovedthemicrobialbiofilmgrowth．DuringfilteroperationphasetheremovalrateofCODMnNH3-Nturbiditycouldreach14.66%85.81%and53.00%respectivelywhichprovedasatisfieddegradationeffect．Keywordsbiologicalaeratedfiltermicro-pollutedrawwaterfractaltheoryattapulgitemediaBiologicalAeratedFilterBAFBiologicalContactOxidationBCO1－7。BAF、8。9－10。35。11.14.5m0.25m2Q1m3/h1。2～5mm。BAF。、。1Fig．1Processflowofmicro-pollutedrawwatertreatment1.216.2～47.9mg/L30.35mg/LNH3－N0.23～4.03mg/L1.54mg/LCOD5.22～9.26mg/L7.05mg/L。CODNH3－N《》GB3838—2002ⅡⅣ。NH3－NN－1－－CODMn。1.31.7m3/m2·h90min1∶1～1.2∶121.6～32.7℃。－4～5L/m2·s2～3L/m2·s。22.1micromeriticsAutoPoreⅣ95102。233.88%40～553nm120nm。11－130.5～25μm9lnNr－lnr3。33.140.9889。2Fig．2Distributionofporesizeofattapulgitefiltermaterial8853Fig．3Fractaldimensioncalculationofattapulgitefiltermaterial2.2NH3－N14BAFNH3－N4a。4aNH3－N90%。50%1140%NH3－N。、NH3－N。2085%～95%NH3－N75%NH3－N。4NH3－N、CODMnFig．4RemovalefficiencyofNH3－NCODMnandturbidityofthemicropollutedrawwater。3.1420d3.14。2.3CODMnCODMn5.0～7.0mg/L4.1～6.1mg/LCODMn9.23%～22.37%14.66%4c。4cBAF。BAFCO2。CODMn15。2.4NH3－NNH3－N9835。NH3－N0.83～4.03mg/L2.69mg/L0.38mg/L。NH3－N85.81%100%NH3－N4b。NH3－N。5.0～7.0mg/LNH3－N。2.5。、、、、。4d。4d23～43NTU31NTU9.7～24.6NTU14NTU53.00%。12。Zetaζ。BAF。3120d3.14。21.7m3/m2·h、90min、1∶1～1.2∶1、21.6～32.7℃BAFCODMn、NH3－N14.66%、85.81%53.00%。3NH3－N、。1．J．200931119－12．2．J．2007231139－41．3．J．200432663－66．4．J．2006265785－790．5．J．2009251865－70．6．J．2003318977－981．7．BiostyrJ．200629184－86．8HarendranathCSAnujaKSinghAetal．ImmobilizationinfixedfilmreactorsanultrastructuralapproachJ．WaterScienceandTechnology19963387－15．9．J．1999151210－13．10．D．2002．11．M．1990．12．、M．1995．13．M．1995．14．J．201134259－61．15．J．200926165－68．09