摘要
以1 mol/L KCl为汲取液,不同浓度重金属溶液为原液,进行了正渗透水处理试验。试验结果表明:随着正渗透处理时间的增加,原液逐渐被浓缩。水通量呈现出了先下降后上升,再下降的过程。反向盐通量以重金属Cd原液最高。正向截留率Cd原液最小,其他4种重金属原液处理间无显著差异。重金属拦截率显示了CTA正渗透膜对5种重金属拦截效果较好。5种重金属的拦截率大小依次为:Cd>Hg>As>Cr>Pb。
Using 1 mol/L of KCl as drawing solution and heavy metals with different concentrations as stocksolution,forward osomsis（FO）water treatment tests have been conducted. The experimental results show that withthe increase of FO treatment time,the stock solution is concentrated gradually. The water fluxes demonstrate aprocess of decrease-increase first and decrease again. Heavy metal Cd stock solution has the highest reverse saltflux and Cd stock solution has the lowest forward rejection rate. The other four kinds of heavy metals stock solutiontreatment do not have significant difference. Heavy metal rejection rate shows that CTA FO membrane has betterrejection effect. The subsequence of rejection rates of the five kinds of heavy metals is as follows：Cd〉Hg〉As〉Cr〉Pb.
出处
《工业水处理》
CSCD
北大核心
2017年第11期65-69,共5页
Industrial Water Treatment
基金
引进国际先进林业科学技术项目"化肥驱动正渗透水处理果园灌溉技术引进"(2014-4-26)
湖南省教育厅优秀青年科学研究项目(16B278)
经济林培育与保护教育部重点实验室开放基金项目
关键词
重金属
正渗透
截留率
heavy metals
forward osomsis（FO）
rejection rate
