活性炭多维电极法去除水中腐殖酸过程与宏观动力学研究  

The technique and kineticis to remove dissolved humic acids in drinking water by multi-electrodes of granular activated carbon

作　　者：曾抗美[1] 李乃稳 肖芳[1] 张操[1] 

机构地区：[1]四川大学环境科学与工程系,成都610065 [2]青岛市政工程研究设计院,青岛266000

出　　处：《环境污染治理技术与设备》2003年第3期31-35,共5页Techniques and Equipment for Environmental Pollution Control

摘　　要：采用活性炭多维电极法去除水中溶解态腐殖酸。实验结果表明 ,与活性炭单纯吸附法相比 ,活性炭多维电极法可显著提高对溶解态腐殖酸的去除率 ;在连续运行条件下 ,延长水力停留时间、升高槽电压、溶液偏碱性有利于腐殖酸的去除 ;高效液相色谱分析结果表明 ,电极的氧化还原作用可使有机物分子量变小或矿化 。An important way to solve the problem of disinfection by_products(DBPs) of chlorination in drinking water is to remove the main precursors of DBPs_humic acids (HAs).A system which combined electro_chemical reaction with adsorption of granular activated carbon(GAC),named multi-electrodes of GAC (MEGAC), was used to remove HAs. The experiment results in successive processes showed that the system of MEGAC can remove HAs more effectively than that of GAC adsorption. The longer retention time,higher supplied voltage and higher pH value of solution were beneficial to the removal of HAs.The results of liquid chromatography showed that molecules of HAs decomposed and the molecule weights decreased in the treatment process,which may regenerate the GAC and lengthen its life span. An experimental kinetic model for the decomposition of HAs was proposed.

关 键 词：腐殖酸 活性炭 多维电极 饮用水 

分 类 号：TU991.2[建筑科学—市政工程]