改性粉煤灰处理含铬废水的研究  

Study on the Treatment for Chromium-containing Wastewater by Modified Fly Ash

作　　者：刘艳军[1] 李亚峰[1] 张佩泽[1] 

机构地区：[1]沈阳建筑大学市政与环境工程学院,沈阳110168

出　　处：《工业安全与环保》2008年第6期7-9,共3页Industrial Safety and Environmental Protection

摘　　要：利用经2 mol/L的硫酸改性的粉煤灰来研究粉煤灰吸附处理实验室模拟含铬废水。实验结果表明,处理100mL含六价铬为50 mg/L的废水,调节pH值2-3,投加8 g改性粉煤灰,反应80 min后六价铬的去除率达到90%以上;吸附符合Freundlich等温吸附式。利用粉煤灰吸附处理含铬废水,具有处理效果好,操作简单,运行费用低等优点,因此,粉煤灰可以作为一种有效的吸附剂来处理含铬废水。The fly ash, modified by 2 mol/L of sulfuric acid is used to conduct adsorption treatment experiment, sinmlaling chuomium- conraining wastewater. The results show that the removal rate of sixvalent chromium can reach above 90% in the treatment of 100 mL wastewater with sixvalent chromium of 50 mg/L concentration under conditions, pH- 2 - 3, 8 g of modified pulverized fly ash and 80 rains of reaction time and the adsorption conforms with adsorption isothermal fomula of Freundlich. There are many merits by using modified pulverized fly ash for the chromate waterwater, such as satisfying treatment effects, easy operation, low running costs, and so on. So it can be used as a kind of effective adsorbent in chromate wastewater treatment.

关 键 词：粉煤灰 改性 六价铬 吸附作用 

分 类 号：X703[环境科学与工程—环境工程]