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一、概述: 随着社会的发展和人民生活水平的提高,城镇用水量骤增,而我国淡水资源又相当贫乏。尤其是北方地区缺水情沉更为严重。城市污水回用已经是不容人们置疑的一项水资源技术政策,世界上许多国家和地区,已经把城市污水厂出水经补充处理后回用于工业和市政。城市污水厂二级出水作为城镇第二水源具有水量能保证,水质相对稳定,就近可取的特点。由于城市污水处理厂二级出水的水质不断提高,为污水的工业回用提供了物质
I. Overview: With the development of society and the improvement of people’s living standards, urban water consumption has surged, while China’s freshwater resources are rather poor. In particular, the lack of water in the north is more serious. The reuse of municipal wastewater has become an indisputable technical policy of water resources. In many countries and regions in the world, the effluent of municipal wastewater treatment plants has been replenished and used for industrial and municipal purposes. As the second water source in urban areas, the secondary effluent of urban sewage treatment plant can guarantee the quality of water and is relatively stable and desirable. Due to the continuous improvement of the water quality of the secondary effluent of urban sewage treatment plants, it provides material for the industrial reuse of sewage