Research progress on sludge resource utilization in urban domestic sewage treatment plants
摘要
Sludge recycling not only reduces environmental pollution, but also realizes the reuse of resources and promotes sustainable economic development. It is an important measure for sewage treatment plants to practice the concept of green and circular development to deeply explore the efficient resource utilization path of sludge and continuously enhance the level of sludge resource utilization. According to the physical and chemical properties of sludge, this paper summarized various comprehensive utilization approaches for sludge from municipal wastewater treatment plants, including sludge fertilization, organic matter recovery, energy utilization, building materials production. The optimal sludge treatment and disposal strategy should be selected by comprehensively considering cost-effectiveness, market demand, policy support, and environmental benefits. This approach could achieve efficient utilization of energy and resources, foster circular economic development, mitigate negative environmental impacts, and promote sustainable development.