巢湖微污染水质状况及处理技术

About the State of Little Water Pollution in the Chaohu Lake and Treating Techniques

巢湖是合肥市一个重要水源。文章对巢湖微污染水质的特点及形成原因进行了深入的研究 ;对氨氮、藻类、p H值、异味等四个特征指标的变化规律做了详细论述 ;对以巢湖为水源的水处理技术进行了总结 ,提出了源水预氧化—聚合铝铁、亚铁氯化联合混凝—HCA助凝—除臭剂、活性碳联用去除异味—微絮凝的高效率水处理模式 ,不仅在合肥供水集团有限公司取得了非常良好的应用效果 ,也可为其它以内陆湖泊为水源的制水厂所借鉴。

The Chaohu Lake is an important water source for the city of Hefei. The characteristics and causes of little-pollution in the Chaohu Lake are studied in this paper. The variational rule of ammonia nitrogen, algae, and odor as the three characteristic indexes are also discussed in detail. Furthermore, according to the summing-up of water treatment for the Chaohu Lake, the measures, such as pre-oxidation to water source-polymeric aluminum-ferric and ferrous surplus chlorine coagulation-HCA concretional aid-clearing odor with deodorant surplus activated carbon-micro-flocculation, an efficient water treatment mode, are put forward here. In addition, the application has not only achieved excellent effect in Hefei Water Supply Group, but also has some reference to other water factories, depending on inland lakes.