酵母废水中蛋白质和焦糖色素的厌氧毒性研究

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1、STUDYoNTHEANAEROBICTOXICITYOFPROTEINANDCARAMELCoLoRCoNTAINEDINYEASTWASTEⅥ编LTERABSTRACTAnaerobicbiologicaltreatmenthaseffectonhi曲concentrationorganicwaaewmer．Asaneffectiveanaerobicreactor,up—flowmultistageanaerobicreactor(UMAR)hasbeenwidelyusedforsugar,paper,starchwastewater

2、．Withthecharacteristicsofhighconcentrationandhighchroma，yeastwastewatercontainsprotein，caramelcolor,cellulose，residualsugar,etal，itscompositionandconcentrationinfluencetheefficiencyandanaerobicgranularsludgeofthereactor．Theinfluenceofproteinandcaramelcolorcontainedinyeastwa

3、stewatertoUMARhasbeenstudiedinthispaper．Anaerobictoxicitytestswerecarriedouttostudyontheinfluenceofdifferentconcentrationsofproteinandcaramelcoloronspecificmethanogenicactivity(SMA)ofanaerobicgranularsludge．Researchshowsthatwhenproteinconcentrationis200mg／Lor400mg／L，ithasno

4、effectonthemethanproductionofanaerobicgranularsludge；whenconcentrationis600megLor800megL，itsli曲tlyinhibitthemethanproductionofanaerobicgranularsludge；whenconcentrationreachs1000mg／L，itmoderatelyinhibitthemethanproductionofanaerobicgranularsludge．Whencaramelcolorconcentratio

5、nisIII200mg／L，ithasnoeffectonthemethanproductionofanaerobicgranularsludge；whenconcentrationis400mg／Lor600mg／L，itslightlyinhibitthemethanproductionofanaerobicgranularsludge；whenconcentrationisgreaterthan800mg／L，itmoderatelyinhibitthemethanproductionofanaerobicgranularsludge．

6、Theresultofactivityrestoretestshowsthatproteinconcen—trationgreaterthan400metEcouldpiosontheanaerobicsludge，andthetypeoftoxicityismetabolictoxicity；caramelcolorconcentrationgreaterthanmg／Lcouldpiosontheanaerobicsludge，thetypeoftoxicityisphysiologicaltoxicity．ThewastewaterCO

7、Dremovalratecouldreach91．2％treatedbyUMAR,ifpretreatedbychitosanandCCS；CODremovalratedecreaseto86．7％ifpretreatedjustbyCCS；CODremovalratedecreaseto83．1％ifpretreatedjustbychitosan；CODremovalrateminimumto76．2％ifnotbeenpretreated．Gasvelocityofvolumeandgasvelocityofmaterialsreach

8、maximuminthefirststage，theyare4．66m3／(m3·d)and0．91m3／kgCOD．Fromstage1tostage4，size