城市污泥资源化利用研究进展

Research Progress of resource utilization of urban sewage sludge

传统的城市污水厂污泥处理方法具有不能有效利用可再用资源、易造成二次环境危害的弊端,提出积极进行污泥资源化研究才是解决我国城市污泥处理处置的有效途径。详细介绍了污泥资源化技术的多样性,它包括:堆肥利用技术、建材化技术、能源化技术、材料化技术、污泥蛋白质利用技术,其中污泥堆肥技术效果显著、适用范围广、成本较低,适合我国小城市及城镇。从经济角度及环保效益考虑,污泥建材化、能源化、材料化及污泥蛋白质利用等资源化技术比较适合我国大、中城市应用。

As traditional technologies for the treatment and disposal of the sludge from urban sewage treatment plant are unable to utilize reusable resources effectively, and can cause secondary pollution to the environment, sludge resources utilization is pointed out and believed to be an effective way for urban sewage sludge treatment and disposal. Many kinds of sludge resources utilization technologies were introduced in detail, which includes： sludge composting, using sludge as building materials, energy resources and other stuffs, extracting and utilizing protein from sludge. Among the above technologies, composting had advantages of notable efficiency, wild application range and low cost, therefore, it was suitable to be used in small cities and towns. Considering from the aspects of economy and environment protection, the technologies of using sludge as building materials, energy resources and other stuffs, extracting and utilizing protein from sludge were fit for middle or big cities in China.