粉末活性炭回流高密度沉淀池生物强化作用研究
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2020-03-17 10:42:11
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书14给水排水Vol.40No.82014粉末活性炭回流高密度沉淀池生物强化作用研究邢思初1卢文卓2张东波1许龙1曹伊璐2(1上海市政工程设计研究总院(集团)有限公司,上海200092;2金华市消防支队,金华321017)摘要研究了投加粉末活性炭并回流泥炭后高密度沉淀池对有机物的去除效果。结果表明:粉末活性炭回流后有机物的去除效果显著提高:CODMn平均去除率为43.66%,比未投加粉末活性炭工况的32%提高了近12个百分点,沉淀池出水平均CODMn为3.46mg/L,比未投加粉末活性炭时的4.13mg/L降低了约0.7mg/L;对比投炭前后沉淀池中底泥的微生物好氧速率,发现其微生物量的提高与有机物去除效果的变化一致,投加粉未活性炭提高了污泥中微生物量从而提高了有机物的去除率;通过GC-MS对半挥发性有机物的检测发现,投加粉末活性炭后的吸附作用对有机物的浓度有很好的去除效果但对有机物种类去除效果有限,而投炭后吸附以及随着投炭产生的微生物强化作用对有机物种类和浓度都有很好的去除效果。关键词高密度沉淀池粉末活性炭生物好氧速率GC-MSStudyonbiologicallyimprovedrefluxhigh?concentrationsedimentationtankbypoweredactivatedcarbonXingSichu1,LuWenzhuo2,ZhangDongbo1,XuLong1,CaoYilu2(1.ShanghaiMunicipalEngineeringDesignInstitute(Group)Co.,Ltd.,Shanghai200092,China;2.JinhuaFire?fightingDetachment,Jinhua321017,China)Abstract:Thispaperstudiedtheremovaleffectonorganicmatterofhighconcentrationsedi-mentationtankenhancedbypoweredactivatedcarbon(PAC)andrefluxsludge.TheresultsshowedthattheorganicremovalabilitywasimprovedgreatlyafterthedosingofPACandsludgereflux;theaverageremovalrateofCODMnwas43.66%whichwasimprovedbynerly12%com-paredwiththatof32%withoutPAC;theCODMnofeffluentfromsedimentationtankwas3.46mg/Lwhichwasreducedbynerly0.7mg/Lcomparedwiththatof4.13mg/LwithoutPAC.ThecomparisonofoxygenconsumptionrateofmicroorganisminsedimentationtanksludgebeforeandafterthedosingofPACshowedthatthechangingtendencyofmicroorganismquantityandorganicmatterremovalratewerethesame,whichmeantthatthePACincreasedthemicroorganismquanti-tyandtheorganicmatterremovalrate.TheGC-MSstudyonsemi-volatileorganiccompoundsshowedthattheadsorptionofPACdemonstratedsatisfyingremovaleffectontheorganicconcen-trationbutlimitedeffectonthetypesoforganicmatter;however,thebiologicalenhancementafterPACshowedoutstandingremovaleffectonbothconcentrationandtypesoforganicmatter.Keywords:Highconcentrationsedimentationtank;PAC;Biologicaloxygenconsumptionrate;GC-MS高密度沉淀池(smediⅡ型高效沉淀池)[1]是一种新型的高效沉淀工艺,可以有效利用池体容积,将混合、絮凝、沉淀的常规工艺和污泥浓缩工艺集中在一个构筑物中,对有机物和浊度有很好的去除效果。DOI:10.13789/j.cnki.wwe1964.2014.0193给水排水Vol.40No
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