对改性沸石提高污水COD净化效率的研究

随着工农业生产的发展和人民生活水平的提高,有机物的排放量急剧增加,已成为环境的主要污染源而引起各界的关注。当水体中的有机物的含量增加,水体中的溶解氧的消耗增加,水质变差。污水中的有机物含量较高时,不利于污水的处理,使处理费用增加。所以对污水进行COD预处理,有利于污水的后续的处理。面对传统工艺耗资巨大且有机物去除率较低状况(我国一般为20%~50%)需要探索一些新的处理废水的方法。利用吸附作用处理废水便是其中之一,由于沸石的独特结构,利用它的吸附性能来处理污水不仅可以降低成本,而且还可以更有效的利用矿产资源。本文研究了改性沸石吸附生活污水中的有机物以降低COD的值,用改性后沸石降低COD,试验表明沸石的投加量,吸附时间、温度,污水的pH值,污水初始COD等是影响去除率的因素。在一点范围内,增加沸石的投加量、振荡时间、吸附温度、污水初始COD值可以改善有机物的去除效果。

On the Modified Zeolite to Improve Wastewater Purification Efficiency of COD

With the development of industrial and agricultural production and people's living standards improve, the emissions of organic sharp increase in the environment have become major sources of pollution and has attracted extensive attention. When the water content of organic matter increased,the consumption of dissolved oxygen in water increase, water quality deterioration. The organic content of sewage is high, is not conducive to sewage treatment,so that deal with cost increases.Therefore,pretreatment of was...