Abstract:The synergistic disposal of burning sludge along with domestic refuse is an effective method to achieve the “reduction, stabilization, reutilization and harmlessness” of sludge . This paper introduced the physical and chemical properties of sludge with different water contents and the main blended incineration method of sludge with 80% and 40% water contents, analyzed the advantages and disadvantages of various blended incineration methods, and provided some solutions to the problems of blended incineration in light of actual cases.The mixing and burning methods of sludge with a moisture content of 80% mainly include sending the sludge to the incinerator for mixing and burning in the hopper and sending the sludge to the incinerator for direct injection mixing and burning. The problem of the former in practice is that the sludge sent into the feed hopper is cylindrical and cannot be burned through, so it is necessary to improve and optimize the sludge nozzle; The latter has problems and risks that affect the stable operation of incinerator, but the process is simple and the investment is small, which is the future research direction. There are many ways to mix and burn the sludge with a moisture content of 40%, such as sending the sludge to the garbage pit and mixing and burning the garbage, sending the sludge to the garbage feed hopper for mixing and burning, sending the sludge to the pusher platform for mixing and burning, and sending the sludge to the furnace side wall for mixing and burning, each of which has its advantages and disadvantages. In practical application, a variety of mixing and burning methods are usually used cooperatively, which can give full play to the reliability and flexibility of these common mixing and burning methods and ensure reliable operation.
