上海环境：国际首创“FAST工艺”可实现垃圾焚烧飞灰减量95%，目前进行规模推广

Core Viewpoint - Shanghai Environment has announced the successful development of the "FAST process" in collaboration with Tongji University, marking a significant advancement in the treatment of fly ash, a major pollutant from waste incineration, which is now entering a phase of large-scale promotion [1][2] Group 1: Technology and Innovation - The FAST process utilizes existing facilities at waste incineration plants and employs principles similar to "seawater salt production" to purify certain substances in fly ash into industrial salts like sodium chloride and potassium chloride, achieving near-zero waste [2] - The technology comprises three core systems: desalination and decontamination system, salt recovery system, and synergistic thermal treatment system, which not only reduces and harmlessly processes fly ash but also creates conditions for resource utilization, converting fly ash into marketable industrial salts and aggregate [2] - The process achieves a fly ash landfill reduction rate of 95% and ensures zero discharge of wastewater and waste gas [2] Group 2: Industry Context and Impact - Fly ash is a significant secondary pollutant generated from waste incineration, containing heavy metals and dioxins, and is the largest single item in hazardous waste landfilling in China, with over 10 million tons produced annually from approximately 252 million tons of municipal waste [1] - In Shanghai, the hazardous waste landfill volume in 2023 was about 260,000 tons, with fly ash accounting for 230,000 tons, representing over two-thirds of the total [1] - The successful implementation of the FAST process provides a replicable and promotable technical pathway for achieving near-zero landfill for solid waste globally, offering a new direction for the transformation of China's waste incineration industry [2]