微污染水源水生物接觸氧化處理工藝的優(yōu)化.pdf

1、同濟大學博士學位論文微污染水源水生物接觸氧化處理工藝的優(yōu)化姓名：梅翔申請學位級別：博士專業(yè)：環(huán)境工程指導教師：高廷耀19990901同濟大學工學博士學位論文OptimizationofBiologicalContactOxidationProcessforTreatmentofSlightly—PollutedSourceWaterAbstractOptimizingseveralaspectssuchassystematiccompo

2、nents，processparametersandoperationconditionsinthebiologicalcontactoxidationprocessfortreatmentofslightly—pollutedsourcewaterhasbeenconductedbyusingthepilot—scaleexperimentalsystemThestartupstageoftheprocesssystemhasbeen

3、studiedThedesignandoperationparametershavebeenoptimizedTheexperimentalresultsoftwoaerationmodesandseveral虹ndsofpackingmaterialshavebeencompared，respectivelyThehydrauliccharacteristicsofthebiochemicaltankwithhighercross。s

4、ectionalaverageflowratehavebeenexploredFurthermore，theapplicationperformancesofthebiologicalcontactoxidationprocessinthelargescaleprojecthavebeeninvestigated(1)Onthebasisofcomprehensiveanalysesofvariationsofvariouspollut

5、antsandtheirrelationsduringthestartupstageoftheprocesssystem，itwasgiventhatthecompletionofthestartupstageoftheprocesssystemcouldbechieflycharacterizedbythesteadyammonianitrogenremovalperformanceofthesystemItwasproposedth

6、atthechangeinthevariationrateofnitrate—nitrogenduringthestartupstagecouldreflectthecorrelationoftwogroupsofnitrifyingbacteriaintheirrespectivegrowthrateandconversioncapacity(2)Theresultsofexperimentalcomparisonshowedthat

7、themicroporeaerationmodewithhigherutilizationrateofoxygenwasmoreefficientthantheperforated—pipeoneforremovingammonianitrogen，howevertheammonianitrogenremovalefficiencieswouldapproachthesamenessforbothaerationmodesafterth

8、eair—waterratiowasgreaterthan100(atthistime，HRTwas50rain，andtheaerationstrengthwas456Nm3／m2mOnaccountoftheproblemssuchascloggingeasilyappearinginthemembranetypemicroporeaerator，theperforatedpipeaerationmodewasappropriate

9、tothelarge—scaleproject(3)Whenwatertemperaturewasgreaterthan25“Candtheinfluentammonia—nitrogenconcentrationwaslessthan25mg／L，theammonia—nitrogenremovalefficiencyofthetankinstalledwithYDT—modelpackingmaterialscouldbeachie