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1、第59卷第9期化工学报Vol159No192008年9月JournalofChemicalIndustryandEngineering(China)September2008研究论文处理高浓度氨氮废水的阳离子交换树脂筛选李红艳,李亚新,孙东刚(太原理工大学环境科学与工程学院,山西太原030024)摘要:目前树脂种类繁多,给处理高浓度氨氮废水的树脂选型带来困难。根据离子交换理论,利用001×7、-1)D61和D001三种阳离子交换树脂,模拟研究了氮肥厂废水(氨氮浓度为915mg·L氨氮的吸附等温式,在30～50min内三种树脂对氨氮的吸附基本可达到平衡,吸附等温线均符合Freund
2、lich吸附模式;进而研究了这三种树脂对废水中氨氮吸附的选择性系数、工作交换容量和离子交换速率。结果表明,用D61树脂处理含高浓度氨氮的废水效果较为理想,可以相对较少的用量,使处理后水质达到相关排放标准的要求。关键词:氨氮废水;离子交换树脂;筛选;吸附等温线中图分类号:X70311文献标识码:A文章编号:0438-1157(2008)09-2339-07ScreeningofcationexchangeresinsfortreatingwastewatercontaininghighconcentrationammoniaLIHongyan,LIYaxin,SUNDonggang
3、(SchoolofEnvironmentalScienceandEngineering,TaiyuanUniversityofTechnology,Taiyuan030024,Shanxi,China)Abstract:Inordertoovercomethedifficultyinchoosingtherighttypeofresinfromnumerousresinsavailablefortreatingwastewatercontaininghighconcentrationammonia,threecationexchangeresins:001×7,D61andD00
4、1werestudiedbasedonionexchangetheory1Theammoniaadsorptionisothermsof-1thesimulatedwastewater(concentrationofammonia915mg·L)inafertilizerplantwereinvestigated1Ammoniumionuptakeequilibriumonthreeresinswasreachedwithin30—50minutes,andalladsorptionisothermswereinlinewiththeFreundlichadsorptionmod
5、el1Theselectivityfactor,practicalexchangecapacityandionexchangerateofammoniumionuptakeontheseresinswerealsoinvestigated1D61resinwasthebestresinfortreatingwastewatercontaininghighconcentrationammonia1Thisresincouldguaranteeeffluentwatermeetingthedemandofwaterqualityin《Dischargestandardofwaterp
6、ollutantsforammoniaindustry》(GB13458—2001)withlessresinquantity.Keywords:wastewatercontainingammonianitrogen;ionexchangeresins;selection;adsorptionisotherms含有高浓度氨氮。含氨废水的排放导致水体富营养引言化,已严重威胁到人类的生产生活和生态平衡。目前我国有1000多家氮肥厂,其合成氨废水《合成氨工业水污染物排放标准》(GB13458—2007-10-08收到初稿,2008-04-11收到修改稿。Receiveddate:200
7、7-10-08.联系人及第一作者:李红艳(1975—),女,博士研究生。Correspondingauthor:LIHongyan,PhDcandidate.E-mail:lhy3162@1261com©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.http://www.cnki.net·2340·化工学报第59卷2001)规定,中型企业废水氨氮浓度应≤70mg·由上海汇脂树脂厂提
