垃圾渗滤液及膜滤浓缩液生物毒性研究
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2020-04-09 14:20:07
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2017年7月第33卷第4期沈阳建筑大学学报(自然科学版)JournalofShenyangJianzhuUniversity(NaturalScience)Ju1.2017VO1.33.No.4文章编号:2095—1922(2017)04—0722—08doi:10.11717/j.issn:2095—1922.2017.04.18垃圾渗滤液及膜滤浓缩液生物毒性研究傅金祥,何祥,谷文艺,孟海停(沈阳建筑大学市政与环境工程学院,辽宁沈阳110618)摘要目的探究渗滤液及膜滤浓缩液生物毒性,找出溶解性有机物组分变化对生物毒性产生的影响规律.方法实验采用卤虫作为试验生物,测定垃圾渗滤液及浓缩液对受试生物的24h,96h的10%致死浓度LC。及半致死浓度LC通过离子交换的方式去除氨氮与重金属,进而研究渗滤液中有机物的生物毒性.结果渗滤液、纳滤浓缩液及反渗透浓缩液24h一c的稀释度分别为17.74%、66.99%、89.33%.渗滤液及纳滤浓缩液中溶解性有机物24h—LC5的稀释度分别为70.15%、77.98%.渗滤液及浓缩液中亲水性有机物P(96h—Lc5o)分别为332.06mg/L、504.1mg/L.结论渗滤液生物毒性最强,浓缩液中腐殖酸组分明显提高,亲水性有机物组分毒性有所下降.关键词垃圾渗滤液;膜滤浓缩液;卤虫;生物毒性中图分类号X703文献标志码ADeterminationofAcuteToxicityofLandfillLeachateandMembraneFiltrationC0ncentratesJinxiang,HEXiang,GUWenyi,MENGHaiting(SchoolofMunicipalandEnvironmentalEngineering,ShenyangJianzhuUniversity,Shenyang,China,110168)Abstract:Leachateandconcentratesfromlandfi11ofLaohuchongShenyangwereselectedtodeter.minethetoxicity.Andtheeffectsofdissolveorganicmatteronacutetoxicitywerediscussed.Bio—assayswereconductedrecordingtoxicityagainstArtimiasalinaasmedianlethalconcentrations(LC10andLC5ovalue)ager24hand96hexposure.Toincreasetheselectivityoforganicmattersinthemeasurements,thefractionationwasdonebyusingionexchangetoseparateammonium/am—moniaandmetalionsfromwastewater.Theresultsshowthatthe24h—LC1ethalityValueofland—fi11leachate.nanofiltrationconcentratesandreverseosmosisconcen仃ateswere17.74%.66.99%and89.33%respectively.whichmeanlandfillleachatebeingthemosttoxicityone.Itwasfoundthattherewasasignificantcontributiontotheacutetoxicityemanatedformthedissolveorganicmattercomponentsinthelandfillleachate.24h—LClethalityvalueofdissolveorganicmatterfromleachateandNFconcentratewere70.15%and77.98%respectively.P(96h—LC50)ofhy—drophilicfromleachateandnanofi1trationconcentratewere322.06mg/Land504.1mg/L.The0一收稿日期:2016—05—09基金项目:国家水体污染控制与治理科技重大专项项目(2014ZX07202—001);辽宁省环境科研教育“123工程”项目(CEPF2014—123—1—3)作者简介:傅金祥(1955一),男,教授,主要从事水污染控制理论与技术研究.第4期傅金祥等:垃圾渗滤液及膜滤浓缩液生物毒性研究723verN1performanceofconcentrationprofileandtoxicityinlandfillleach
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