粉末活性炭去除敌敌畏小试研究

Treatment of Dichlorovos-Polluted Water with Powdered Activated Carbon

考察了粉末活性炭吸附对模拟突发敌敌畏污染源水的应急处理效果,利用批式试验研究了水质条件以及粉末活性炭的投加量对敌敌畏的去除效果的影响。试验结果表明粉末活性炭对敌敌畏的吸附去除效果较好,当敌敌畏的浓度为10μg/L,活性炭投加量为10 mg/L,吸附4 h,原水中的去除率为55.1%。并且,增加活性炭的投加量到30 mg/L,吸附2 h,出水中敌敌畏的浓度能达到饮用水标准。本研究还得出粉末活性炭在两种水体中敌敌畏的Freundlich吸附模型。粉末活性炭吸附应急处理敌敌畏污染原水技术可行性高,药剂费用为0.09～0.12元/t水。

The removal efficiency of dichlorovos in simulated dichlorovos-polluted raw water by powdered activated carbon treatment was studied. The results show that the removal efficiency of activated carbon on dichlorovos is perfect. When the concentration of dichlorovos was 10 μ g/L, activated carbon dosage was 10 mg/L , stirring 4 h, the removal rate of dichlorovos in raw water is 55.1%. And when dichlorovos is 10 times of standard value, adding 30 mg/L of activated carbon and stirring for 2 h, the concentration of dichlorovos in treating water complies with drinking water standard. The powdered activated carbon absorption process of dichlorovos matches the model of Freundlich equation in deionization water and raw water. The emergency treating technology proved to be of great practicability. The treatment cost is 0.09 to 0.12 RMB/t of water.