粉煤灰吸附处理含铬废水的试验研究  

Experiment Study on Adsorption Treatment of Chromium-containing Wastewater by Fly Ash

作　　者：尹宏生 夏怡[2] 刘佳媛[3] 

机构地区：[1]沈阳市城建局,辽宁沈阳110015 [2]辽宁地质工程职业学院,辽宁丹东118008 [3]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168

出　　处：《辽宁化工》2010年第4期372-375,共4页Liaoning Chemical Industry

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100 mL含六价铬浓度为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。Adsorptive treatment of chromium-containing wastewater imitated in laboratory was carried out by using pulverized fly ash as the adsorbent which was modified by adding 2 mol/L sulfuric acid.The experimental result shows that when pH is 2~3,the input quantity of modified pulverized fly ash is 8 g,and the reacting time is 80min,the removal percentage of hexavalent chromium is above 90% in the treatment of 100ml wastewater with 50mg/L hexavalent chromium;and its adsorption conforms to adsorption isothermal formula of Freundlich.Moreover,there are many merits by using modified pulverized fuel ash for treatment of chromium-containing wastewater： good treating effects,simple operation and cheap running cost,so the modified pulverized fly ash can be used as a good adsorbent in treatment of chromium-containing wastewater.

关 键 词：粉煤灰 含铬废水 吸附 

分 类 号：X703[环境科学与工程—环境工程]