A Study on Treatment of Atrazine-Containing Wastewater with Ion Exchange Fibers.
ZHOU Shao-ji, WANG Ji-guo,. WU Zheng
(Department of Material Technology, Beijing Institute of Clothing Technology. Beijing 100029, China)

　　Abstract: In studying the treatment of atrazine-containing wastewater with ion exchange fibers, comparisons were made between the adsorptive capacities of strong acid type cation exchange fiher and weak acid type cation exchange fiber with static method and dynamic method. Results of the study showed that strong acid type cation exchange fiber can be use in the treatment of wastewater which contains atrazine and other organisms, with which the CODcr in the wastewater can be reduced by 86% and the CODcr can be up to the discharge standard after atwo-stage adsorption. The ion exchange fiber can be regenerated with 1 mol/L sodium chloride solution or sodium hydroxide solution.
　　Key words: pesticide-containing wastewater; wasterwater treatment; ion exchange fiber for treatment of
wastewater; atrazine

　　离子交换纤维是一种新型离子交换材料，它和离子交换树脂一样，含有固定离子，并有与固定离子符号相反的活动离子，在水中，活动离子可和相同符号的离子进行交换，和离子交换树脂相比，它的特点是比表面积较大、交换与洗脱速度快、容易再生，可以短纤维、无纺布、网、织物等多种形式应用，可去除水中微量无机离子或有机物。 阿特拉津是一种农药（除草剂），化学名2－氯4-乙胺基6-异丙胺基1，2，3三嗪，又名莠去津（Atrazine），应用广泛，但毒性较大。本文对采用离子交换纤维处理这种废水进行了研究。

1 试验部分

1．1 试验用水
　　阿特拉津饱和水溶液为实验室配制，农药厂废水为工厂提供。农药厂废水含阿特拉津、乙胺、异丙胺、苯胺及氢氧化钠。氯化钠等，种类多含量低，尤其是吸附后含量更低，用一般方法很难分别测定，故采用化学耗氧量（CODcr）来代表总有机物的污染程度。经测定，阿特拉津饱和水溶液的CODcr的质量浓度为160mg／L，农药厂废水CODcr的质量浓度为728mg／L。