MBR處理高含鹽量污水的短程硝化反硝化現(xiàn)象及影響因素研究.pdf

1、MBR處理高含鹽量污水的短程硝化反硝化現(xiàn)象及影響因素研究StudyonShortcutNitrification—DenitrificationandInfluenceFactorinHypersalineWastewaterTreatmentbyMBR領(lǐng)域研究生指導(dǎo)教師企業(yè)導(dǎo)師碩l‘學(xué)位論文巫撞王程盛玉至民數(shù)攫韭匝出數(shù)攫級(jí)直王天津大學(xué)環(huán)境科學(xué)與工程學(xué)院二oo八年八月ABSTI認(rèn)CTWithdevelopmentandapplicati

2、onofthecomprehensiveutilizationofseawaterincoastalcities，moreandmoresalinewastewaterhasbeenproducedandbecomesanimportantpollutionsourcesToiletflushseawaterandotherwastewaterfromdistricts，islands，shipsandwarshipscontainma

3、nyorganicandinorganicnitrogencompoundsToomuchnitrogencompoundsenteringintoseawaterwillmakewaterqualityworsen，acceleratetheprocessofeutrophication，triggerredtide，whichwillimpactthedevelopmentoffishingindustryandendangerhu

4、manhealthTherefore，wemustpaymoreattentiontothenitrogenpollutioninseawaterandtheresearchonhigh—efficiencydenitrificationpathwaysAsanewhighlyefficientdenitrificationtechnologyshortcutnitrificationdenitrificationtechnologyh

5、asbeengivenattentionbymanyscholars，whichhasthemeritssuchaslowenergyconsumption，savingcarbonandreducingthereactorvolumesMembranebioreactorasanewwastewatertreatmenttechnologywiththeadvantageoffocusonequipment，smallfootprin

6、t，goodeffluentqualityandlessamountofsludge，isverysuitableforbiologicaltreatmentoftoilet—flushseawaterfromislands，districts，shipsandotherspecialoccasionsCombiningshortcutnitrificationdenitrificationtechnologywithmembraneb

7、ioreactorcanfullyplaythesetwohighlyeffectivetechnologiestemoveallthecharacteristicsoforganicmatterandammonia，SOastobettersolvethetreatmentquestionofsalinewastewaterafterutilizationofseawateThereforethisstudyhasimportantt

8、heoreticalsignificanceandbroadprospectsBasedonexperiments，thepaperinvestigatedtheinfluenceofsalinitytemperature，pH，dissolvedoxygenconcentrationandammonialoadingtoshortcutnitrificationdenitrification，determinedtheconditio

9、nsinwhichshortcutnitrification—denitrificationwasachievedinhypersalinewastewatertreatmentbyMBR，andstudiedtheprincipleofshortcutnitrificationdenitrificationinMBRResultsshowthattheshortcutnitrificationdenitrificationOccurs

10、inMBRwithsalinityintherangeoftoilet—flushseawaterTheoptimaloperatingconditionsarethatthetemperatureis30℃orso，theunitareaaerationamountis067m’／(h‘m2)，thepHvalueis759Accordingtothedifferenceofnitratebacteriaandnitritebacte

11、riainphysiologicalmechanismandreactioncharacteristic，wecanaddinhibitorsinteactororcontrolthereactionconditionstomakemoregreatlyimpactonnitratebacteria，andthenchangetheformofnitrificationKeyWords：HypersalineWastewaterToil