Abstract:The long-term storage and extensive disposal of solid waste have caused serious water soil air composite pollution. It is necessary to strengthen the scientific and effective utilization of solid waste, which is not only conducive to solving the major pollution problem of solid waste, but also alleviates the shortage of resources and energy in China. This study summarizes three typical types of urban solid waste comprehensive treatment experience models, and points out that the solid waste circular economy model characterized by centralization, resource utilization, and greening is the main way to solve the complex problem of solid waste. Therefore, it is urgent to systematically carry out research on key technologies, equipment, and integrated optimization control of resource, energy, and environmental systems under the urban multi-source solid waste collaborative utilization model. Taking the development practice of Haixinsha National Resource Recycling Base as an example, by breaking through a series of key technologies such as domestic waste incineration, food waste biogas producing, municipal sludge pyrolysis, electronic sludge smelting, waste mineral oil distillation, and whole process metabolism digital twin, this study expounds that the comprehensive resource and energy recovery efficiency has been greatly improved, and the comprehensive environmental impact level has been greatly reduced. Finally, the key directions of multi-source solid waste comprehensive utilization and pollution collaborative control are prospected from the aspects of precise management of solid waste, innovation of circular economy development mode, and construction of waste free society.