全程自養(yǎng)脫氮及厭氧氨氧化的研究.pdf

1、湖南大學(xué)碩士學(xué)位論文全程自養(yǎng)脫氮及厭氧氨氧化的研究姓名：唐林平申請學(xué)位級別：碩士專業(yè)：環(huán)境工程指導(dǎo)教師：李小明20080701全程自養(yǎng)脫氮及厭氧氯氧化的研究AbstractAccumulationofammoniainwaterenvironmenthasinducedseriousdeteriorationtOthequalityofwaterenvironmentItisaproblemthatshouldbesolvedbyusi

2、ngpropermeasuretopreventthedeteriorationwithoutdelayWastewaterwithhighnitrogenconcentrationsandlowC／Nratioarerathercostintensivewhentreatedwithconventionalconcepts，asboththeoxygendemandfornitrificationandthedemandfororga

3、nicsubstratesfordenitrificationdependontherespectivenitrogenconcentrationinthewastewaterItgoesagainstthesustainabledevelopmentofwastewatertreatmentRecentlyanewprocessnamedasdeammonification，whichdescribestheoxidationofne

4、arly50％oftheNH4tON02。andsubsequentconversionofNH4andN02’tomolecularnitrogen(N2gas)Themainadvantagesoftheseprocessisloweroxygendemand(upto25％energysavingsduringaeration)andreduced40％organicsubstraterequirementsforheterotr

5、ophicdenitrification，SOitbecomethehighlightinthebiologicalde—nitrogenstudyBasedonthelatestresearchfindingsonbiologicalnitrogenremovalinbothdomesticandabroad，theinfluenceofinorganiccarbonconcentration，pHvalueanddissolvedo

6、xygen(DO)indeammonificationwasstudiedinaSBRreactorusinganaerobicgranulationsludgeastheinoculationInordertoinvestigatethepossibilityofthegranulationofdeammonificationbacteriaTheexperimentresultsshowedthatthepHvalueinthere

7、actionsystemkeepfrom77to83thetemperaturekeep(35士1)。CandDOconcentrationbecontrolledat05mg／LwouldplantthegranulationofdeammonificationbacteriaInordertoseeddeammonificationgranulationsludgeinananaerobicsequencingbatchreacto

8、rtheanaerobicammonium—oxidized(ANAMMOX)wassuccessfulenrichat(35士1)。Caftera97一daycultivationwiththeinfluentpHvaluerangingfrom77to83Experimentalresultindicatethatwithahydraulicsettlingtimeof3dandavolumetricloadingrate(calc

9、ulatedwiththecontentofN)of01702kg／(m3d)，themaximumremovalofthetotalnitrogenrespectivelyachieve827％whilethemaxi一一mumremovalsofNH4NandNOrNrespectivelyachieve862％and86％Theanaerobicammoniumoxidationisfoundtobethemainreaction