活性污泥对低浓度市政污水中COD吸附性能的研究

AdvancesinEnvironmentalProtection环境保护前沿环境保护前沿,2018,8(1),58-66PublishedOnlineFebruary2018inHans.http://www.hanspub.org/journal/aephttps://doi.org/10.12677/aep.2018.81008StudyonAdsorptionofCODinLowStrengthMunicipalWastewaterbyActivatedSludgeQinglongChang,YayiWang*StateKeyLaboratoryofPollutionControlandResourcesReuse,CollegeofEnvironmentalScienceandEngineering,TongjiUniversity,ShanghaiReceived:Feb.4th,2018;accepted:Feb.20th,2018;published:Feb.27th,2018AbstractTheAdsorption/Bio-oxidation(A/B)processcanbeusedtorecyclecarbonsourcebyadsorbingthecarbonsourceinwastewater.Inthispaper,theinfluenceofadsorptionmode,sludgeconcen-trationandpHonAdsorptionPropertiesofactivatedsludgewasstudied.Besides,theadsorptionisothermoftreatinglowstrengthmunicipalwastewaterbyactivatedsludgewasinvestigated.Theresultsshowedthattheanaerobicadsorptionofactivatedsludgereachedadsorptionequilibriumpointafterabout10min,andtheaerobicadsorptionreachedafterabout20min.Theadsorptioncapacityofaerobicsludgewashigherthanthatofanaerobicadsorption,andtheadsorptioneffi-cienciesofthemwereabove50%.Inaerobicadsorptionconditions,sludgeconcentrationdidn’taffectthetimeofreachingtheequilibriumpoint;thelowerthesludgeconcentrationwas,thehighertheadsorptioncapacitywas,thelowertheadsorptionefficiencywas,andthemorequicklythedesorptionprocesswas;pHcanhardlyaffecttheactivatedsludgeadsorptioncapacityofacti-vatedsludge;thehigherthepHwas,themorequicklythedesorptionprocesswas.Theadsorptionisothermofactivatedsludgeabsorbingthechemicaloxygendemand(COD)inlowstrengthmu-nicipalwastewaterfitwellboththeFreundlichequationandtheLangmuirequation.Theadsorp-tionconstantnoftheFreundlichequationwasbetween1~10,whichindicatedthatactivatedsludgewasagoodadsorbent.KeywordsActivatedSludge,AdsorptionPerformance,LowStrengthMunicipalWastewater,AdsorptionIsotherm活性污泥对低浓度市政污水中活性污泥对低浓度市政污水中COD吸附性能的吸附性能的研究研究常青龙，王亚宜常青龙，王亚宜**通讯作者。文章引用文章引用:常青龙,王亚宜.活性污泥对低浓度市政污水中COD吸附性能的研究[J].环境保护前沿,2018,8(1):58-66.DOI:10.12677/aep.2018.81008常青龙，王亚宜同济大学环境科学与工程学院，污染控制与资源化研究国家重点实验室