污水污泥送火力发电厂焚烧的环境风险研究进展

Review on the environmental hazards during the co-combustion of coal and sewage sludge in the power plants

污泥焚烧工艺的应用已经有几十年的历史,但在火力发电厂内焚烧污水污泥近年来才得到较多关注。由于污水污泥送火力发电厂焚烧对于水务和电力部门是双赢的,积极探索这个途径的可行性,控制可能出现的环境风险,有利于污水污泥处置的可持续性发展。对污水污泥和煤的成分进行比较,并对国内外研究者的相关研究成果以及相关法规进行了综合分析,就火力发电厂内焚烧污水污泥在我国推广提出一些建议。

Sludge combustion has been practiced for decades. However, the co-combustion of coal and sewage sludge in the power plants was suggested only recently. Because the power plants have not been designed for the addition of sludge, the environmental impacts are still a common title for many studies. In this paper the properties of sewage sludge and coal are compared at once in order to find the basic reasons of environmental hazards. Then this paper summarizes some studies on the environmental hazards of co-combustions. Finally, some suggests have been made about the co-combustion of coal and sewage sludge in this country.