再生水补给型河湖水体净化技术分析与适宜性评价

Analysis and Suitability Evaluation of Reclaimed Water Supply-type River and Lake Water Purification Technology

北京地区随着再生水补给型人工湖泊、人工河道、公园景观水池等水体工程的大规模建设,再生水河湖回用的现实问题日益显著,找到适宜的再生水补给型河湖水质保障工艺技术势在必行。在对北京地区实际工程建设和运行效果进行重点调研与分析的基础上,提出水力循环、循环过滤、生物调控、人工湿地、化学除磷等单项和组合技术可考虑作为再生水回用型河湖水体水质改善与净化的主要途径。对于经济状况较好且水质标准较高的区域,可考虑辅以膜生物反应器、生物活性炭滤池等生化-物化法高效组合工艺技术。

Following the large-scale construction of artificial lakes, rivers and park landscape ponds using reclaimed water, the problems of reclaimed water are increasingly evident, and it is necessary to find a suitable technology for ensuring reclaimed water quality. Based on the investigation, research and analysis of construction and running effect of the water quality improvement projects in Beijing, it was pointed that the single and combined techniques such as hydraulic circulating, recirculation filtration, bi- omanipulation, constructed wetland and chemical phosphorus removal can be considered as the main approaches for improvement and purification of water quality of rivers and lakes using reclaimed water. In the areas with better economic conditions and higher water quality standard, the biochemical-physicochemical methods such as membrane bioreactor （MBR）, the biological activated carbon filter （BAC） and other effective combined technologies can be supplemented.