欢迎来到天天文库
浏览记录
ID:34658131
大小:443.12 KB
页数:7页
时间:2019-03-08
《饮用水深度处理系统溶解性有机物的变化与组成特性》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、万方数据第62卷第3期化工学报V01.62No.32011年3月CIESCJournalMarch2011饮用水深度处理系统溶解性有机物的变化与组成特性吴义锋,吕锡武(东南大学能源与环境学院,江苏南京210096)摘要:采用混凝、沉淀、砂滤联合臭氧、生物活性炭构建饮用水深度处理系统,以黄浦江原水为研究对象,研究该系统对各类有机物的去除效能,探讨溶解性有机物在系统中的变化与组成特性。结果表明:黄浦江原水中以分子量小于3000的有机物为主,占总溶解性有机物的55.9%;常规单元、臭氧、生物活性炭对溶解性有机物的去除有功能互补性,常规单元对分子量大于10000的有机物去除率达61.1%,而对分子量小
2、于3000的IX)C去除率仅为7.9%,臭氧氧化可使难降解有机物改性为小分子量有机物,经生物活性炭单元后,分子量小于3000的DOC去除率达到28.9%;微量有机物主要通过臭氧、生物活性炭单元被去除,生物活性炭单元出水中微量有机物种类降低至30种,浓度降低67.4%,三氯甲烷生成势去除率为73.7%。关键词:饮用水;深度处理;溶解性有机物;分子量;组成特性中图分类号:TU991.2文献标志码:A文章编号:0438—1157(2011)03一0805一06Characteristicsandconstituentofdissolvedorganicsindrinkingwateradvanced
3、treatmentprocessWUYifeng,LUXiwu(SchoolofEnergy&Enmronment,SoutheastUniversity,Nanjing210096,Jiangsu,China)Abstract:Recently,watersourcepollutionhasbecomeserious.Manykindsoforganicshavebeendetectedindrinkingwaterwithhigherconcentration,andthewaterqualitysafetyreducedgreatly.Inordertoenhancetheremoval
4、rateofdissolvedorganicsinwatersources,thepilotexperimentcontainingtheconventionaltreatmentaswellastheozoneandbiologicalactivatedcarbonfilter(BACF)wasreportedinthispaper.TakingtherawwaterfromtheHuangpuRiverasthesample,thecharacteristicsandconstituentsofdissolvedorganicsintheprocesswereinvestigated.Re
5、sultsshowedthatthemajorityoforganicswerethosewithlowmolecularweight(MW)intherawwater,thepercentageoflowMW(<3000)organicsreached55.9%.Inthecombinedtreatmentprocess.theconventionalunitremovedtheorganicswithhighMW(>10000)effectively,andtheremovalratewasupto61.1%,whileonly7.9%removalrateforlOWMW(<3000).
6、ThefunctionofozoneoxidationwastomodifytherefractoryorganicsintolowMWorganicstoenhancetheperformanceofBACF.andtheremovalrateoforganicswithMW<3000reached28.9%viaBACF.ThemajorityoftraceorganicswereremovedbythecoordinationofozoneandBACF,thetypesoftraceorganicsreducedfrom77to30,andtheconcentrationdecreas
7、ed67.4%.2010--05—19收到初稿,2010—11—02收到修改稿。联系人;吕锡武。第一作者:吴义锋(1975一),男,博士。基金项目:国家水体污染控制与治理科技重大专项(2008ZX07421);国家自然科学基金项目(51009027);国家高技术研究发展计划项目(2008AA05A412)。Reeeiveddate:2010—05—19.Correspondingauthor:Pr
此文档下载收益归作者所有