剩余污泥资源化利用新工艺研究进展

随着城市化进程加速, 污水处理厂剩余污泥大量产生, 如何对其进行处理并有效资源化利用成为广泛关注的问题。文章在综述我国城市污水处理厂剩余污泥特征、相应处理与综合利用方法的基础上, 进一步综述了污泥干化芦苇床、人工湿地、微生物燃料电池以及相关组合工艺等剩余污泥资源化利用新工艺。总结了各种新工艺的优势以及当前尚未解决的关键问题, 对未来新工艺的潜在应用进行了展望, 以期开发出低能耗、低成本、高效率、绿色生态的技术, 真正实现剩余污泥的减量化、无害化、稳定化和资源化。

THE REVIEW OF NEW TECHNOLOGY ON DISPOAL OF EXCESS SLUDGE

A large amount of excessive sludge is generated from wastewater treatment plants along with the accelera-tion of urbanization. How to effectively treat and utilize the excessive sludge as resources has become an issue with widespread concern. Based on the overview of excessive sludge characteristics in municipal sewage treatment plants, appropriate sludge disposal and comprehensive utilization methods, this paper further reviews the progress in the sludge drying reed beds, constructed wetlands, microbial fuel cells, related combined processes and other novel sludge re-source utilization technologies. This review paper synthesized the advantages of new technologies as well as the cur-rent key issues that remain unresolved. The potential applications of these new technologies are promising in reducing energy consumption cost and also in developing a green technology that will truly realize the reduction, detoxification, stabilization and resource utilization of excess sludge.