混凝吸附强化分离浓缩生活污水

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1、ABSTRACTThesewagetreatmentprocessisnowunabletomeettherequirementsofsustainabilityconcept,foritshighenergyconsumption,andCO2emissionscharacteristics.Aspeopledeepenunderstandingofenvironmentalissues，Sewagetreatmentprocesstoachieveacomprehensiveresourcewillbecomethefuturetrend.Anaerobic

2、technologyasamorematuretechnologymeetstherequirementsofcomprehensiveresourceforitshighcharacteristicsofrealizetherecyclingoforganicenergyandnutrients.However,thebiggestobstacletotheeffectiveuseofanaerobictechnologyisthelowconcentrationsofsewage.Sothekeystepofachievecomprehensivesewag

3、erecyclingandresourcerecovery.Usingphysical-chemicaltreatmentsewageconcentrationisthebestoptionforminimizethelossoforganicenergybybiologicalprocesses.Thisstudyproposestworoutestoachievesewageconcentrate，coagulation-adsorptionpretreatmentcombinedsedimentationseparation，andcoagulation-

4、adsorptionpretreatmentcombinedfilteredforsewageconcentrated,anddesignstwokindsofreactors(upflowsludgelayerreactoranddouble-layer-filterdynamicmembranereactor)tovalidatethepossibilityofthistechniqueroute.Firstly,accordingtothequantityoftheinfluent,selectthesuitablecoagulantandadsorben

5、tandhaveashortdiscussonthemechanismofthecoagulation-adsorptionprocess.ItconcludedthatthebestremovalefficiencywasgetwhenconcentrationofPACandpowderactivatedcarbonwere60mg/Land40mg/lseparatelyandthediatomitehastheabilityofcoagulationandadsorption.Thecoagulationandadsorptionprocessremov

6、etheorganicsubstratefromwastewatertosolidphaseandbenefitfortheseparationandconcentration.Bytheexperimentsofupflowsludgelayerreactor,itconcludedthatcoagulation-adsorptionfiltrationofsewagewastewaterwasfeasibleandtheoptimumparametersweregainedfromexperiments.TheCODremovalefficiencywasa

7、round80%andSCODremovalefficiencywasduring40%and50%.Duringtheshortcycletime(oneSRT),aboutthe64.6%percentofCODwasconcentrated,19.6%ineffluentand15.8%forbacteriause.Bytheexperimentsofdouble-layerfilterdynamicmembrane,itconcludedthatcoagulation-adsorptionfiltrationofsewagewastewaterwasfe

8、asible.After