化学调理改善活性污泥脱水性能的研究

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1、浙江大学硕士学位论文AbstractFeCl3+PAM(40．0+3．5mg／gDS)andFeCh+CaO(30．0+150．0mg／gDS)conditioning，itisobviousthatFeS04·7H20+Na2S20s+CaCl2improvedtheactivatedsludgedewaterabilitybest．Inthepilottest，thecakesolidcontentwasincreasedfrom10．57％to24．37％afterthesludgewasconditionedwithFeS04·7H20+Na2S20s+CaC

2、l2(62．5+50．0+100．0mg／gDS)anddewateredbytheframefilterunder0．6MPafor16．0h，andthechemicalcostis338．0RMB／tDS．Theactivatedsludgewasaggregatedandtheparticlesizeandsolublechemicaloxygendemand(SCOD)wereincreasedafterconditioningwithCTS+PAM，FeCl3+CTS，FeCl3+PAM，FeCl3+CaO，FeS04·7H20+Na2S208andFeS

3、04·7H20+Na2S208+CaCl2．ThemaximumparticlesizewasobtainedwithCTS+PAMconditioningandthemicrographalsoshowedthedensestflocsagglomeration．ThestrongestincreaseofSCODwasresultedfromFeS04·7H20+Na2S20s+CaCl2conditioning．Thesephenomenaindicatethattheconditioningagentscouldaggregatetheactivatedslu

4、dgeflocs，andthusimprovethedewaterability．TheroleofFeS04·7H20+Na2S208mainlyliesindecomposingthemicroorganismandreleasingboundwater．TheresultsalsoshowedthatTTFandcakesolidcontenthadanegativecorrelation．whiletheyhadnoapparentconnectionwithCST．Therefore．TTFwasmoresuitablethanCSTtocharacteri

5、zetheactivatedsludgedewaterability．ThechemicalconditioningagentsFeCl3+CaO(30．0+150．0mgCgDS)andFeS04·7H20+Na2S20s+CaCl2(62．5+50．0+100．0mg／gDS)showedthebestperformanceinimprovingtheactivatedsludgedewaterability,andtheincreaseofthecakesolidcontentinthepilottestwere13．80％and9．38％，respective

6、ly．Theirchemicalcostsare180．0and338．0RMB／tDSrespectively．Keywords：activatedsludge；dewaterability；chemicalconditioning；FeS04·7H20+Na2S208．IV浙江大学硕士学位论文目录目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．IAbstract⋯⋯．⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．ⅡI目录⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯V插图和附

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