硅藻精土技术在中小城镇污水处理中的应用

Application of Refined Diatomite Technology to Wastewater Treatment in Medium-and Small-sized Cities and Towns

介绍了硅藻精土水处理技术的除污机理及其在国内的应用情况,根据目前已施工项目的实际运行情况,指出了硅藻精土技术应与其他生化技术进行组合,并作为深度处理单元置于生化单元之后。重点介绍了A/O与硅藻精土组合工艺的特点、流程及设计参数,通过与CAST、氧化沟工艺的技术特点及经济指标的比较,说明了该工艺具有投资省、运行费用低、占地少、出水水质优等特点,适于中小城镇的污水处理。

The contaminant removal mechanism of refined diatomite technology and its application in China were introduced. Based on the practical situation of completed projects, it was pointed out that the refined diatomite technology should be combined with other biochemical technologies and be located after the biochemical unit as advanced treatment unit. The characteristics, process flow and design parameters of the combined process of A/O and refined diatomite technology were introduced emphatically. This process has characteristics of low investment, low operation cost, small area occupied, high quality effluent and so on compared to the CAST and the oxidation ditch technology. It can be used for wastewater treatment in medium- and small-sized cities and towns.