生物絮凝強(qiáng)化一級處理+高負(fù)荷生物濾池處理生活污水.pdf

1、生物絮凝強(qiáng)化一級處理高負(fù)荷生物濾池處理生活污水Biofloceulationandtricklingfilterprocessforsewagetreatment作者姓名奎逃理學(xué)位類型堂迓亟學(xué)科、專業(yè)(工程領(lǐng)域)直邀王猩研究方向撼直給丕掛丞王程皇掛苤導(dǎo)師及職稱儉徨溢教援2006年2月10日BiofiocculationandtriddingfdterprocessforsewagetreatmentAbstractInnovativel

2、owcoskenergyandspaceefficientsewagetreatmentprocessesarenecessarytodealwiththesewagetreatmentissueinChina，ConventionalprimarytreatmentisnotsufficienttoremovemostorganicpollutantsfromlawsewageAnirmovmivetreatmentprocessin

3、corpolatingbiofioeculation，forenh赫cedpretreatment，withthehighratetdddingfilterwasproposedinthisresearchprojectStudieswereperformedtovalidatetheconcepktodemonstratethetreatmenteffectivenessandtodefinemajorprocessparameter

4、sAfter25daysculturinginasemicontinuousbioreactorthelabproducedsludgewesemployedinbiofloceulationpretreatmentwhichaccomplished70％removalofchemicaloxygendemand(COD)and7080％removalofsuspendedsolids岱S)Whenthedissolvedoxygen徊

5、lo)WaSatleast2mg甩inthesludgeactivationtankremovalsofCODandSSwerea￡thehighest1evel，whilea∞of5m蚰WasrequiredtoforeffectiveremovalofNH3N；DOhadnoeffecton磚osphateremoval。ADOofatleast2撙班wasthereforeemployedinmostofthetestrunsin

6、thisresearchRelativetoalowCOD(ioo250mgn一)feedlessorganicremovalwasobservedintreatingahighCOD(400800mg幾)teedofseptictankeffluent；suchresultssuggestedadsorptionwasthedominantCODremovalmechanismBioflocculatingeffectivenessi

7、mprovedwhenthefimdCODdecreased；itwasresistanttoashockingloadingBioflocculationadsorptionfollowedby協(xié)em曲ratetricklingfiltertreatmentresultedinafinaleffluentwithaCOD40mrdL；itsaverageremovalratesforCOD，P04’tandNH3Nwere847％，6

8、55％。and87％respectivelyCODremovalwasstableandmosteffectiveatanorganicloadingof3—7kgCOD／kgMLSSd。ThetremmentperformancewasadverselyaffectedbyincreaseinfluentflowlateWhiletheaverageCODremovalcontinuedatahighlateof877％(efflue

9、ntCODremainedbelow4。mrS)，theaverageNH3NremovalWas534％andtheaverageP043“pwas497‰Sludgeemployedinbiofluceulafionexhibitedthebestadsorptionrateat20“CBetween2040“C，theadsorptionratedecreasedasthetempelatmxlwentup；Adsorptione

10、quiIibriumwasattainedin2030minmesOrganicmattersinsuspendedformsweremoreeffectivelyremovedbvbiosorptionthansolubleandcolloidalforms。MicroBeinhibitorwasharmfultothebiofloceulationpretreatmentKeywords：bioflocculation，highra