炭砂双层滤料浮滤池工艺处理藻污染水库水
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2020-02-22 11:30:31
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2014年6月CIESCJournal·2335·June2014第65卷第6期化工学报Vol.65No.6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1,张克峰2,贾瑞宝3,李梅2,宋武昌3,李莹2(1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;2山东建筑大学市政与环境工程学院,山东济南250101;3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−1(以Al3+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−1),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DOI:10.3969/j.issn.0438-1157.2014.06.052中图分类号:TU991.2文献标志码:A文章编号:0438—1157(2014)06—2335—09ExperimentalresearchontreatingreservoirwatercontaminatedbyalgaeusingGAC-sanddualmediafilterflofilterWANGYonglei1,2,LIJun1,ZHANGKefeng2,JIARuibao3,LIMei2,SONGWuchang3,LIYing2(1KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentRecoveryEngineering,CollegeofArchitectureandCivilEngineering,BeijingUniversityofTechnology,Beijing100124,China;2CollegeofEnvironmentalandMunicipalEngineering,ShandongJianzhuUniversity,Jinan250101,Shandong,China;3JinanWaterandWastewaterMonitoringCenter,Jinan250100,Shandong,China)Abstract:Thealgaepollutionofreservoirwaterisseriousincreasingly,thetraditionalprocessofsedimentationsolid-liquidseparationhardlymeetstherequirementofclearwater.GAC-sand-double-filtrationflofilterwasbuilttotreatthehighalgaereservoirwaterderivedfromyellowriver,andtherunningandoperatingcharacteristicsofthisflofilterwereinvestigated.Theexperimentresultsshowedthat,theeffectofrunningwasexcellentwhenpolyaluminumferricchloride(PAFC)dosagewas4.0mg·L−1(Al3+),airpressure0.4MPa,andrefluxratio8%.BiomassofGACandsandfilterlayermainlyexistedinthecarbonlayer,whichaccountedfor97.4%(thehighestvaluewas50.2nmolP·g−1),anditsbiomasswas16.7timesofsandlayer(3.0nmolP·g−1),sotheremovalofpollutantsoccuredmainlyinthecarbonlayer.Duringt
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