炭砂双层滤料浮滤池工艺处理藻污染水库水的试验研究
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2020-02-26 12:58:53
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第65卷第6期2014年6月化工CIESC学报Journal、,01.65NO.6June2014煎炭砂双层滤料浮滤池工艺处理藻污染水库水的试验研究王永磊1,2,李军,张克峰,贾瑞宝,李梅2宋武昌3,李莹(北京工业大学建筑工程学院,北京市水质科学与水环境恢复工程重点实验室,北京100124;山东建筑大学市政与环境工程学院,山东济南250101;。济南市供排水监测中心,山东济南250100)摘要:目前水库水源藻污染日益严重,传统沉淀固液分离工艺难以满足净水要求。以鹊山引黄水库高藻原水为研究对象,开发了炭砂双层滤料浮滤池,考察了浮滤池工艺运行特性及运行效果。试验表明,絮凝剂选用聚合氯化铝铁(PAFC),在投药量4.0mg·L(以Al计),回流比8%,溶气压力0.4MPa时,运行效果较优。炭层所含生物量约占滤料层总生物量的97.4%(最高值50.2nmolP·g),是砂滤层(3.0nmolP·g-1)的16.7倍,污染物的去除主要发生在活性炭层。试验期间,浮滤池工艺对颗粒物、蓝绿藻、浊度、CODMn、NPOC、UV254、氨氮的去除率分别达到96.48%、92.40%、92.56%、57.41%、51.60%、52.50%、75.67%,嗅味由4级降为0级,出水土臭素、二甲基异冰片含量均小于检出限,一氯二溴甲烷、三氯甲烷前体物的去除率分别达到55.1%和60%,表明浮滤池工艺对常规指标、藻类、嗅味物质、消毒副产物前体物去除效果显著。关键词:藻;污染;浮滤池;浮选;过滤;炭砂滤料;嗅味物质;消毒副产物前体物DOh10.3969~.issn.0438·1157.2014.06.052中图分类号:TU991.2文献标志码:A文章编号:o438—1157(2014)06—2335—09ExperimentalresearchontreatingreservoirwatercontaminatedbyalgaeusingGAC.sanddualmediafilterflofilterWANGYonglei,一,LIJun,ZHANGKefeng2,JIARuibao3,LIMei,SONGWuchang3,LIYing(KeyLaboratoryofBeo'ingforWaterQualityScienceandWaterEnvironmentRecoveryEngineering,CollegeofArchitectureandCivilEngineering,BeijingUniversityofTechnology,Beijing100124,China;CollegeofEnvironmentalandMunicipalEngineering,ShandongJianzhuUniversity,Jinan250101,Shandong,China;3jinanWaterandWastewaterMonitoringCenter,Jinan250100,Shandong,China)Abstract:ThealgaepollutionofreservoirwateriSseriousincreasingly,thetraditionalprocessofsedimentationsolid—liquidseparationhardlymeetstherequirementofclearwater.GAC-sand-double-filtrationflofilterwasbuilttotreatthehighalgaereservoirwaterderivedfromyellowriver,andtherunningandoperatingcharacteristicsofthisflofilterwereinvestigated.Theexperimentresultsshowedthat。theefectofrunningwasexcellentwhenpolyaluminumferricchloride(PAFC)dosagewas4.0mg·L(A1),airpressure0.4MPa,andrefluxratio8%.BiomassofGACandsandfilterlayermainlyexistedinthecarbonlayer,whichaccountedfor97.4%(thehighestvaluewas50.2nmolP·g),anditsbiomasswas16.7timesofsandlayer(3.0nnlolP·g),SOtheremovalofpollutantsoccuredmainlyinthecarbonlayer.Duringthetest,removaleficiencyofparticul
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