高浓度含砷废水处理回用工程

介绍了黄金冶炼及烟气制酸等排放的高浓度含砷废水的水质，分析了处理该废水的原理．根据处理后的废水要全部回用，按污水水质和出水要求，提出用石灰—铁盐共沉淀法除去废水中砷、氟及重金属等，阐述了工艺流程及工艺参数的控制，指出该处理方法具有流程短、布置紧凑、投资少等特点。

High Concentration Arsenic-containing Waste Water Treatment and Recycle Works

The water quality of high concentration arsenic-containing waste water discharged from gold smelting and fume-based sulfuric acid production,etc. are introduced. Principles for treatment of such waste water are analyzed. Based on the requirement that all treated waste water should be recycled,and according to the waste water quality and discharge requirements,it proposes to use lime-iron salt coprecipitation method to remove arsenic,fluorine and heavy metals,etc. in the waste water. The process flow and control of process parameters is outlined. It points out that this treatment method features short flow,compact arrangement,less investment,etc.