ZHUYu-ting,YUBin,HETing.Full Chain Empirical Study on Continuous High?speed Carbonization and Recycling of Sewage Sludge[J].China Water & Wastewater,2023,39(8):127-132.
Full Chain Empirical Study on Continuous High?speed Carbonization and Recycling of Sewage Sludge
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第8期
Page:
127-132
Column:
Date of publication:
2023-04-17
- Abstract:
- Taking the Ezhou sludge carbonization project as an example, this paper expounds on the principle, process design, treatment effect, and operation management experience of continuous high-speed carbonization technology. The process is divided into 7 units including sludge receiving, storage, drying, carbonization, dust collection, heat recovery, tail gas treatment, carbonized product cooling and storage. The 850 ℃ high-temperature flue gas released by the combustion of retort gas is used as the heat source for drying, which can reduce sludge by 85%, and the product carbide can be used as a resource for making brick. The carbonation system can provide not only its own energy, but also excess energy for the drying section, reducing the dependence of sludge treatment on traditional energy. The system design fully considers the regulation capacity, sets reasonable redundancy and adopts appropriate sludge transportation mode to ensure smooth operation. It can achieve stable operation under the condition of fluctuation of sludge moisture content (80%-85%) and continuous improvement of organic matter. It has good adaptability and regulation capacity, and provides a new idea and full chain empirical study for solving the sludge problem of municipal sewage plants in China.
Last Update:
2023-04-17