高锰酸钾与粉末活性炭联用去除饮用水中嗅味

针对太湖B支流水体发臭现象严重、采用常规工艺处理很难去除嗅味物质的情况，通过试验考察了单独投加高锰酸钾、单独投加粉末活性炭以及高锰酸钾与粉末活性炭联用三种方法对嗅味的去除效果。静态及生产性试验结果表明：高锰酸钾与粉末活性炭联用工艺的除嗅效果最好，当高锰酸钾投加量为0．5mg／L、粉末活性炭投加量为40mg／L时，沉后水的嗅阈值仅为5，去除率达到了98．8％，并且可节省粉末活性炭投量约20％。此外，高锰酸钾与粉末活性炭联用对藻类也有较好的去除效果。

Study on Taste and Odor Removal in Drinking Water by Potassium Permanganate Combined with Powdered Activated Carbon

In order to solve the serious issue of taste and odor in the B tributary of Taihu Lake as the drinking water source, the removal effieieneies with three methods, such as dosing potassium permanganate solely, dosing powdered activated carbon solely and potassium permanganate combined with powdered activated carbon were investigated. The jar test and full scale test results show that the treatment process of potassium permanganate combined with powdered activated carbon is the best one in removing taste and odor. The threshold odor number of the sedimentation effluent is only 5 with the removal rate of taste and odor of 98.8% when the potassium permanganate and powdered activated carbon dosages are 0.5 mg/L and 40 mg/L, respectively. And the consumption of powdered activated carbon can be saved by 20%. In addition, the algae can be removed effectively by this combined method.