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1、J.LakeSci.(湖泊科学),2009,21(6):782-788http://www.jlakes.org.E-mail:jlakes@niglas.ac.cn©2009byJournalofLakeSciences*微曝气生态浮床净化入湖河口污染河水原位模型实验1,21111**﹡﹡李海英,冯慕华,李玲,柯凡,李文朝(1:中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室,南京210008)(2:中国科学院研究生院,北京100049)＋摘要:针对污染河水黑臭缺氧、NH4-N含量高等问题,研发了一种“漂浮载体悬挂弹性生物膜填料+水生植物并辅以人工微曝气系统
2、”的微曝气生态浮床系统.通过原位模型实验,研究了其在大清河入湖河口对污染河水的净化效果,当水力负荷为＋3-1500mm/d时,对TN和NH4-N的平均去除率分别为81.1%、91.3%,对TP的平均去除率为72.7%,对PO4-P的平均去除率3为92.5%,对有机物亦有较强的去除能力;处理1m水需要的曝气费用约为0.007元.微曝气生态浮床系统整体运行稳定、去除效率高、能耗低,适合流水环境,可直接在污染河道和入湖河口区对污染河水进行自流净化.关键词:微曝气生态浮床;污染河水;模型试验;净化效果In-situmodelexperimentonpurificationo
3、fpollutedriverwaterintolakebasedonmicro-aeratedecologicalfloatingbed1,21111LIHaiying,FENGMuhua,LILing,KEFan&LIWenchao(1:StateKeyLaboratoryofLakeScienceandEnvironment,NanjingInstituteofGeographyandLimnology,ChineseAcademyofSciences,Nanjing210008,P.R.China)(2:GraduateSchooloftheChineseAc
4、ademyofSciences,Beijing100049,P.R.China)Abstract:Aimingattheproblemofblack-odor,oxygendeficiencyandammonia-nitrogenpollutionofpollutedrivers,anewtypeofecologicalfloatingbed—micro-aeratedecologicalfloatingbedwasdeveloped,whichcombinedbiofilmpacking,floatingaquaticmacrophyteandauxiliarya
5、erationdevice.ThepurificationefficiencyofthepollutedriverwaterwasstudiedbythemodelexperimentintheoutletofDaqingRiver.Theresultsshowedwhenthehydraulicloadingwas1500mm/d,themeanremovalefficienciesoftotalnitrogen,ammonianitrogen,totalphosphorusandphosphatewere81.1%,91.3%,72.7%and92.5%,res
6、pectively.Additionally,the3floatingbedshowedbetterremovaleffectonorganicmatters.Thecostofmicro-aeratedsystemtotreat1mofpollutedriverwaterwasonly0.007Yuan.Themicro-aeratedecologicalfloatingbedransteadily,hadahighefficiencyofpollutantsremovalandlowenergyconsumption.Itwassuitablefortheenv
7、ironmentofflowingwater,whichcouldbeusedinpollutedriverandestuary.Keywords:Micro-aeratedecologicalfloatingbed;pollutedriverwater;modelexperiment;removalefficiency生态浮床技术是运用无土栽培技术原理,以浮床作为载体,采用现代农艺和生态工程措施综合集成的水面无土种植技术.该技术通过浮床上种植的水生植物对氮、磷等营养物的吸收作用,根系及人工基[1-2]质上附着的微生物对污染物的降解作用,达到净化水体,控制水体富
