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《MBR中活性污泥对雌酮E1的吸附性能研究-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第33卷第7期环境科学学报Vo1.33,No.72013年7月ActaScientiaeCircumstantiaeJu1.,2013杨小丽,周琼,黄克虎,等.2013.MBR中活性污泥对雌酮E1的吸附性能研究[J].环境科学学报,33(7):1876.1883YangXL,ZhouQ,HuangKH,eta1.2013.Adsorptionbehaviorofestrone(E1)ontoactivatedsludgefromMBR[J].ActaScientiaeCircumstantiae33(7):1876—18
2、83MBR中活性污泥对雌酮E1的吸附性能研究杨小丽,一,周琼,黄克虎,宋海亮,1.东南大学教育部环境医学工程重点实验室,南京2100092.东南大学土木工程学院,南京2100963.东南大学能源与环境学院,南京210096收稿日期:2012-10·22修回日期:2012.11—22录用日期:2012.11.22摘要:研究了MBR中灭活污泥对雌酮(E1)的吸附行为,考察了污泥浓度、污泥粒径和E1初始浓度对E1吸附效果的影响,并探讨了不同污泥组分(悬浮颗粒、胶体和溶解物)对E1的吸附作用贡献.结果表明,在E1初始浓度为1—5
3、00Ixg·L~,4h左右达到吸附平衡;E1的吸附符合Freundlich吸附模型,呈线性吸附;E1初始浓度越大,吸附速率越小.随着污泥浓度升高,单位污泥对E1的吸附量显著下降,出现了固体浓度效应;而吸附去除率却随着污泥浓度的升高而显著增加,且两者之间呈显著正相关(P<0.05).活性污泥对E1的单位吸附容量随着污泥粒径增大而减小.污泥中悬浮颗粒、胶体和溶解物的含量分别为87.8%、9.6%和2.6%,吸附平衡时,E1在3种组分中的浓度分别为13.9p,g-g-。、24.1I.Lg·gI1和12.5Ixg·g~,胶体吸附
4、效果最好.不同组分对E1的吸附贡献与其含量正相关,吸附贡献为:悬浮颗粒>胶体>溶解物.关键词:雌酮;吸附;污泥浓度;污泥粒径;初始浓度;污泥组分文章编号:0253-2468(2013)07-1876-08中图分类号:X703文献标识码:AAdsorptionbehaviorofestrone(E1)ontoactivatedsludgefromMBRYANGXiaoli,一,ZHOUQiong,HUANGKehu,SONGHailiang,1.KeyLaboratoryofEnvironmentalMedicineEng
5、ineeringofMinistryofEducation,SoutheastUniversity,Nanjing2100092.SchoolofGivilEngineering,SoutheastUniversity,Nanjing2100963.SchoolofEnergyandEnvironment,SoutheastUniversity,Nanjing210096Received22October2012;receivedinrevisedform22November2012:accepted22November
6、2012Abstract:Theadsorptionbehaviorofestrone(E1)ontotheinactivatedsludgefromamembranebioreactor(MBR)wasinvestigated.Theeffectsofmixedliquorsuspendedsolids(MLSS),sludgeparticlesizeandE1initialconcentrationonadsorptioneficiencywerediscussed.Thecontributionsofsludgec
7、omponents(suspendedsolids,colloidsandsolublematerials)totheE1adsorptionwerestudied.TheresultsshowedthatwhenE1initialconcentrationswere1~500g·L~,theequilibriumreachedafter4hreaction;thesorptionisothermprofilesmatchedFreundlichmode1.TheE1adsorptionratedisplayedanin
8、verserelationshipwithitsinitialconcentration.WiththeincreaseofMLSS,theE1concentrationinthesludgedecreasedremarkably.ThetotalE1adsorptionratedisplayedalinearcor
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