Advances in Resources and Environmental Science

Incineration treatment of hazardous waste is a key means to achieve its harmlessness, reduction and resource utilization. Among them, rotary kiln technology has become the mainstream process due to its strong adaptability and high treatment efficiency. At present, the output of hazardous waste is continuously increasing, and its improper disposal poses a serious threat to the ecological environment and human health. There is an urgent need for efficient and safe disposal technologies. This paper systematically expounds the complete process flow of the rotary kiln incineration system, including core links such as pretreatment matching, multi-form feeding, staged combustion, waste heat recovery and multi-stage flue gas purification, and focuses on analyzing the generation mechanism and control measures of secondary pollutants such as dioxins and heavy metals. Research shows that by optimizing combustion parameters, strengthening end-of-pipe treatment and the safe disposal of by-products, pollution control and energy recovery can be effectively achieved. The conclusion indicates that rotary kiln incineration technology has comprehensive advantages such as a wide processing range, good volume reduction effect, and high energy recovery rate. It is an important technical support for the current safe disposal of hazardous waste. In the future, it should further develop towards intelligence, low carbonization, and high-value resource utilization.

Hazardous waste; Incineration treatment; Rotary kiln; Dioxin control; Flue gas purification; Resource utilization