多晶硅生产废水的处理实践

Wastewater Treatment in Polycrystalline Silicon Production

针对目前国内西门子法多晶硅生产工艺特点,分析了其生产废水的水质特性。结合某多晶硅企业废水处理实践,介绍了两级中和、一体化混凝沉淀过滤、机械压滤工艺和设备在多晶硅生产废水处理中的应用,应用效果显著,能满足国家排放标准和企业回用要求。

This paper analyzes the water quality of wastewater produced by domestic polycrystalline silicon by Siemens method at present, based on its processing characteristic of production. Combined with treatment practice of wastewater in a certain polycrystalline silicon enterprise, this paper introduces the application of the two-stage neutralization, integrated coagulation-sedimentation-filtration, mechanical pressure filtration process and equipment in wastewater treatment of polycrystalline silicon production. The application effect was objective, it can meets national emission standards and recycling requirement of enterprise.