碳源对SBR内除磷效果的影响试验研究(学位)

西安建筑科技大学硕i毕业论文TheeffectofcarbonsourceORbiologicaldephosphatationanddenitrifyingphosphorusremovalSpecialty：EnvironmentengineeringM．E．Candidate：ZhangLi—qingSupervisor：WangZhi*ying，ProfABSTRACTTraditionally，acetatewasconsideredasagoodcorbonsourceforenhancedbiolor西calphosphorusremoval(EBPR)．However,itWasreportedthattheEBPRcouldbebrokendownbytheadditionofacetate—sodiumorglucoseascarbonSOurce．Inthispaper,PAOs(phosphorusaccumulatingorganisms)andDNPAOs(denitrifyingphosphorusaccumulatingorganisms)werecultivatedundertwodifferentoperationswithacetate—SOdimnandglucoseascarbonsource，theeffectofcarbonsource：acetate．sodiam，butyricacid，glucoseandmethanolas4kindsofcarbonsourcewasstudied，andcarbonconcentrationonthebiologicaldephosphatationanddenimlyingphosphorusremovalwerealsofocusedonatthesametime．Theexperimentalresultsshowedthat：(1)Thesystemrunstably埘thhighefficiencyofphosphorusremovalinbothDNPAprocessandEBPRprocess．Underthesamecondition，bycalculatingthephosphorusuptakemteofanoxicoraerobic，thepercentsofDNPAOsbeforecultivatedwere22．25％、18．08％，aftercultivation，theratiocouldrespectivelyreachedto78．61％、51．25％：Therecontainspreparationrelationshipbetweenthenitritedosageandphosphatecontents，theresultwas1．2166mgN／1．onl驴and1．0892mgN／1．0meyw№acetatesodiumandglucoseassubstrates；(2)SBRWasoperatedinthepattemofA／OandA／AwithAcetatesodiumandglucoseascarbonSOurce．ThedegressiveorderbythemaximumquantityandtherateofphosphorusreleaseWas：acetate—sodium，butyricacid，glucoseandmethan01．Acetatesodiurnwasthemostfavouritesubstratewithmaximumquantityofphosphorusreleaseinanaerobiccondition．Thedegressiveorderbythephosphorusuptakeratewas：butyricacid，acetate—sodium．glucoseandmethan01．Thesamecarbonmetabolismhasbeenobservedunderanoxicconditionsandaerobicconditions．Italsodemons仃atedthatbutyricacidasasubstratecallachievegoodEBPRperformance；(3)Thehigherthec／p,themorethequantityofPrelease，buttheratewasdecreasedwhenC，PWasbeyond40．WhenusedacetatesodiumascarbonSOlffce．theCUlWeofP西安建筑科技大学硕J_=靼fk论文releasewasneartObelinearatf