搅拌速度对自热式高温好氧消化养猪废水VSS减量的影响
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2020-04-10 21:11:09
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安徽农业科学,JournalofAnhuiagn.Sci.2011,39(15j:9179—9181,9273责任编辑张杨林责任校对况玲玲搅拌速度对自热式高温好氧消化养猪废水VSS减量的影响李英赞,剥、冬冬。,施云芬,刘景明(1.吉林市环境保护监测站,吉林吉林l32叭l;2.东北电力大学化学工程学院,吉林吉林l32012;3.城市水资源开发利用(北方)国家工程研究中心,黑龙江哈尔滨150090)摘要[目的]考察不同搅拌速度对养猪废液VSS的去除效果以及稳定化工艺参数。[方法]采用批式自热高温好氧消化工艺对养猪废水vss进行降解,在6种养猪废液沉淀物浓度中,确定最佳进泥VSS浓度,通过对VSS、pH、氧化还原电位、温度等指标的测定,考察4组搅拌速度对养猪废液污泥稳定化效果的影响及最佳工艺参数。[结果I在相同搅拌速度下,养猪废液污泥浓度超过35.00L时,反应器自动升温速率为1.5℃/d,均超过平均升温速率,养猪废液VSS的去除率均超过40%。在4组搅拌速度中,VSS的去除率随搅拌速率的上升而增加,搅拌速度在210~220r/min时,VSS的去除率最大,达51.23%。[结论]养猪废液污泥稳定化的工艺参数是:搅拌速度在l80~190r/rain,曝气量在30~32L/h,进泥VSS浓度为35.(x】g/L左右,由此,VSS的去除率为49.92%,平均升温速率1.820C/d。关键词自热高温好氧消4~-T-艺;养猪废水;搅拌速度;VSS去除率中图分类号X703.1文献标识码A文章编号0517—6611(2011)15—09179—03EfrectofMixingspeedonVSSReductioninSwineWastewaterTreatedbyAuto-thermalThermophilicAerobicDigestionLIYing-zanetal(EnvironmentalProtectionMonitoringStationofJilinCity,Jilin,Jilin1320l1)Abstract『0bjective]ThestudyaimedtoinvestigatetheremovingeffectofdifferentstirringspeedsonVSSintheswinewastewater.{Meth—odlThepatch—typeautothermalthermophilicaerobicdigestionprocess(ATAD)wasusedforthedegradationofVSSinswinewastewater.Theoptimumfeedsludgeeoncn.wasconfirmedamong6kindsofswinewastewatersedimentconcn.andtheeffectsof4stirringspeedsonthesta.bilizationeffectoftheswinewastewatersludgeandtheoptimumprocesswereinvestigatedthroughthedeterminationontheindexessuchasVSS,pH,oxidation—reductionpotentia1(0RP)andtemperature.IResultlUndertheconditionofsamestirringspeed,whentheswinewastewatersedimentconcn.wasabove35.o0L,theautomaticrisingtemperaturerateforthereactorwas1.5℃/d,exceedingtheaveragerisingtemperaturerateandtheremovingratesofVSSwereallmorethan40%.Among4groupsofstirringspeed.theremoralratesofVSSwereincreasedwiththerisingofthestiringspeed.andwhenthestirringspeedwasin210—220r/min.theremovalrateofVSSwasthebig.gest,reaching51.23%.『ConclusionlTheprocessparametersforthestabilizationoftheswinewastewatersludgewerefollows:thestirringconcn.was18O—l9Or/min.theaerationvolumewas30—32I/handthefeedsludgeVSSconcn.wasabout35.0H0L,under
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