摘要
采用动力学和静态循环试验考察磁性离子交换树脂(MIEX)对3种不同特征水源水中有机物的去除率及有机物特性对MIEX处理效能的影响。研究结果表明:在动力学试验确定的最佳投加量(水源水A,B和C含量分别为10,10和5 mL/L)和反应时间为(15 min)时,水源水A,B和C的UV254去除率分别为71.5%,81.5%和69.2%,溶解性有机物(DOC)去除率分别为50.4%,65.3%和45.9%;当MIEX投加量10 mL/L时,3种水源水的通水倍数(BV)可达1 500,而不发生离子交换吸附饱和现象;有机物各种特性中,相对分子质量分布可为确定MIEX处理工艺参数提供参考;当水源水中有机物构成以大分子有机物为主时,MIEX投加量需在动力学试验确定的最佳投加量基础上有所增加,才能提高BV且不使MIEX发生离子交换吸附饱和现象。
Three source water of different organic matter character were treated by magnetic ion exchange resin（MIEX） using kinetic and multiple-loading testing designed to evaluate the removal efficiency of organic matter and how organic matter character affects MIEX treating efficiency.For water A,B and C,71.5%,81.5%,69.2% UV254 and 65.3%,50.4%,45.9% dissolve organic carbon（DOC） removals are obtained at optimal doses（10,10 and 5 mL/L for water A,B and C） and contact time of 15 min,respectively.The results indicate that MIEX resin can be loaded up to 1 500 bed volume（BV） or more without any saturation;depending on different organic matter characters,molecular mass（MW） distribution of organic matter can be applied to determine MIEX process parameters;when MIEX is applied to treat raw water,in which the majority of organic matters have low MW,MIEX dose required to increase BV without resin saturation is more than that determined by kinetic experiments.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第6期2459-2464,共6页
Journal of Central South University:Science and Technology
基金
国家自然科学基金资助项目(50638020)
国家科技重大专项项目(2008ZX07421-002)
