Current situation for utilization and disposal and environmental management of fly ash from municipal solid waste incineration

With the rapid increase of municipal solid waste (MSW), the output of fly ash from MSW incineration is increasing day by day. In 2018, fly ash output reached 3.055 million to 5.092 million tons. Fly ash was considered as a kind of hazardous waste because it contained toxic and harmful substances such as heavy metals with high leaching concentration and dioxin with high toxic equivalent. According to the characteristics of fly ash from domestic waste incineration, the resource utilization and harmless disposal technologies of fly ash were introduced in detail, and the advantages and disadvantages of technologies were summarized. Combined with the environmental management requirements of MSW incineration fly ash, the specific reasons for the incomplete landfill management system, the lack of standards and specifications in the utilization and disposal process, and the limited treatment and disposal technologies of fly ash were analyzed. In order to strengthen the environmental management of fly ash and improve the level of its resource utilization, it was proposed to enhance the comprehensive control of the environmental pollution of fly ash, strengthen the supervision and management of the prevention and control of fly ash pollution, and strengthen the research and development and promotion of the resource utilization technology of fly ash.