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ID:36794431
大小:1.36 MB
页数:49页
时间:2019-05-15
《源水中环境激素-邻苯二甲酸酯类的降解研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、堡主丝塞遂查±墅蕉墼垂:塑茎三里塑堕耋盟堕堡堑壅摘要微污染水源水存在微量邻苯二甲酸酯(PAEs)类污染物,如果该水源作为饮用水源长期使用会使PAEs在体内蓄积,造成慢性危害,特别是生殖毒性。本课题以自配的低浓度PAEs溶液为研究对象,以SPME-GC.MS为分析手段,找到合适的降解方法并找出了影响降解的因素。先研究了lmg/L的DBP溶液的降解方法,比较了单独通03和UV/H202/03的方法,确定UVSi20j03具有较高的降解效率,1h内的降解率达98.9%。降解最佳条件为:03一直通,H2
2、02浓度30mg/L,溶液初始p}卜8。再以DMP、DEP、DBP为lmg/L,DEHP为0.4mg/L的混合PAEs溶液为研究对象,比较了单独通03和UV/H20.d03的方法,确定UV/H202/03不仅具有较高的降解效率,还能达到很高的矿化度,1h内的降解率达993%,矿化度达81.2%。降解最佳条件为:03一直通,H202浓度60mg/L,溶液初始pH=8。最后将此方法应用到实际源水水样中,1h内降解率达100%,两处水样的矿化度分别达85.4%和80.8%。UV/H202/03的降解方
3、法具有清洁高效,无二次污染的优点,有很好的应用前景。关键词:邻苯二甲酸酯源水降解臭氧AbstractThereisphthalieacidesters(PAEs)inmicro-pollutedsourcewater.Ifthe$oltroewaterisusedasdrinkingwatersourc.冶,thePAEsmaystockinhuman’Sbody,es.USOchronichazard,especiallyreproductivetoxicology.Low-concentra
4、tionPAEssolutionis0111"researchsubject.SPME-GC-MSisappliedasanalyzemethod.Thcsuitabledegradationmethodandthefactorsthataffectdegradationarefound.First,thedegradationmethodofDBPwithaconcentrationoflrng/Lisstudied.Singleozonationiscompared晰tllUV/H202/O
5、s,andthenconfirmedthatbyusingthemethodofUV/H202/Os,higherdegradationratecanbeachieved.11壕degradationrateinlhouris98.9%.Thebestdegradationconditionis.-aerate03continuously,theconcentrationofH202is30mg/L,theinitialpHofthesolutionis8.Thenthemixedsolutio
6、nwhichiscomposedofDMP、DEP、DBPlmg/L,DEHP0.4mgrt.wasresearchedon,comparedsingleozonationwitllUVM202/Osmethod.Byl塔.mgthemethodofUV/H202/03,notonlyhi曲degradationratewasachieved,btaalsohi.曲mineralizationdegreewasachieved.n圮degradation船tcin1houris98.9%,the
7、mineralizationdegreeis81.2%.Thebestdegradationconditionis:aerate03continuously·beconcentrationofH202is60mg/L,theinitialpHofthesolutionis8.ThenthismethodisappliedtoSOUI'021water.nedegradationrateinlhouris98.9%,themineralizationdegreesofthetworunningwa
8、terfactoriesare85A%and80.8%.ThedegradationmethodofUV/H202/Oshastheadvantageofhighetticieney,cleanandwithoutsecondpollutant.Ithasgoodapplicationprospection.Keywords:phthalicacidesters(PAEs)SOurcewaterdegradationozoneⅡ声明本学位论文是我在导师的指导下取得的研究成果,尽我所知,在本学位论
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