水体中Mn(Ⅱ)的去除——氧化结合吸附法

Removal of Mn(Ⅱ)in water using method of oxidation combined with adsorption

为解决水体中Mn(Ⅱ)含量超标问题,采用氧化结合吸附法进行去除。实验结果表明:单独使用KMnO4、TiO2等氧化剂或人造沸石、活性炭等吸附剂进行处理,可以取得一定的去除效果。采用氧化结合吸附法时:KMnO4联合颗粒活性炭在中性条件下以较小的投加量反应30 min,去除率可达到96.80%;TiO2联合颗粒活性炭在中性条件下反应30 min,去除率可达93.92%。该方法去除水体中的Mn(Ⅱ)具有可行性。

In order to solve the problem that the content of Mn(Ⅱ)in water exceeds the standard,the method of oxidation combined with adsorption is used to remove it.The experimental results show that using the oxidizing agent(such as KMnO4 or TiO2)or the adsorbent(such as artificial zeolite or activated carbon)alone can achieve a certain removal effect.Using the method of oxidation combined with adsorption:the removal rate of KMnO4 combined with granular activated carbon can reach 96.80%after reaction for 30 min with a small dosage under neutral conditions;the removal rate of TiO2 combined with granular activated carbon can reach 93.92%after reaction for 30 min under neutral conditions.The method is feasible to remove Mn(Ⅱ)in water.