摘要
利用小试试验研究了磁性离子交换树脂预处理（MIEX ）对高藻水源水中的溶解性有机氮（DON）的去除效能,并通过分子量分布测定、双向电泳等手段初步分析了其作用机理.结果表明,MIEX 预处理对DON具有较好地去除效果,并可有效强化混凝工艺的处理效能.投加量为15m L/L时,MIEX 预处理可提升DON去除率20%;以铜绿微囊藻为主要种属的高藻水源水中藻类蛋白种类不低于230种,且大多数处于酸性端,分子量区间主要分布于15～40Ku、65～75Ku,处于MIEX 预处理可去除的分子量区间,从而具有较好的去除效果.综上所述,MIEX 预处理可以作为强化去除高藻水源水中DON的一种方法。
Bench-scale tests were conducted to study the removal efficiency of dissolved organic nitrogen（DON） in high algae-containing raw waters by the MIEX resins. Molecular weight distribution and two-dimensional electrophoresis were determined to explore the mechanisms. The results showed that MIEX pretreatment could remove DON effectively and enhance the effect of coagulation. When the dose of resin was 15 m L/L, the removal efficiency was increased by 20% as compared with coagulation alone. More than 230 proteins were found in the raw waters with Microcystis aeruginosa as dominant species. Those proteins were mainly in the acidic end and their molecular weight were between 15～40Ku and 65～75Ku, which were prone to be removed by MIEX. In conclusion, MIEX pretreatment is one of the applicable methods for removing DON in high algae-containing raw waters.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2015年第4期1123-1128,共6页
China Environmental Science
基金
国家自然科学基金(51378174)
国家科技重大专项(2012ZX07403-001)
江苏高校优势学科建设工程资助项目
作者简介
刘成（1977-），男，山东济南人，副教授，博士，主要研究方向为水处理理论及技术．发表论文50余篇．责任作者，教授，cw5826@hhu．edu．cn
