化學法強化污泥活性的試驗研究.pdf

1、武漢理工大學碩士學位論文化學法強化污泥活性的試驗研究姓名：何蘇偉申請學位級別：碩士專業(yè)：市政工程指導教師：姜應和20061101AbstractIntheaerobicactivatedsludgewastewatertreatmentsystem，themicrobialactivityisoneofthekeyfactoroftheefficiencyofthewastewatertreatmentManyfactorswillin

2、fluencethemicrobialactivitythemainfactorsarctheconcentrationanddifferentkindsofinletsubstrate，temperature，pHvalue，DOandsoonExceptforthese，somemineralnourishmentarcneededinthephaseofmicrobialsgrowthandmetabolism，whensuchm

3、ineralelementsarcabsent，excessordisproportional，itcanaffectthenormalmetabolismofthemicrobial，anditcanlowertheactivityofthemicrobialGenerallyrecognizingthecomponentofthewasterwateriscomplex，anditcontainsenoughmineralnouri

4、shmentfortheneedsofthemicrobialgrowthbutitisnottrue，someindustrywastewaterorthemunicipalwastewaterwithlargeproportionofindustrywastewaterareshortofonekindorseveralkindsofmineralnutritionelementssometimesSoithasgreatsigni

5、ficancetofindthekindandtherangeofmineralelementwhichcanpromotetheactivityofactivatedsludge，thatitc柚guaranteeandenhancetheefficiencyofthebiologicaltreatmentofsewagehlthistopicthroughaseriesofcontrastexperimentwewanttofind

6、theeffectofdifferentchemicalmethodstotheactivityoftheactivatedsludgeinthebiologicaltreatmentsystemofsewage，anditisexpectedtoincreasethesewagebiologicaltreatmentefficiencybyenhancetheactivityofthemicrobialfromthechemicalp

7、haseInthisexperiment，CODremovementisusedasthemacro—indexteflectthechangeoftheactivityofmicrobialindirectlyandweexpecttofindtheoptimumconcentrationofthegrowthofmicrobialinthebiologicaltreatmentsystemofsewageThemetalsaltsu

8、chasMnCl2’4H20、Mg(N03)2‘6H20、FeS04‘7H20，areputinthereactorseparatelytoactivatetheactivityThroughtheparallelexperimentationitisindicating：(1)ItcanimprovetheratioofCODremovementtosomeextentwhentheMnCl24H20wasputinthesewage

9、WhentheconcentrationofMn“is05m“comparedwithparallelreactortheratiooftheCODremovementofdosingreactorisimprovedabout43percentWhentheconcentrationismoreorlessthan05m嘰theimprovementislessthan43percent(2)PuttinginproperlyM92c