LISheng,JIAOFang-fang,WANGHang-hang,et al.Municipal Sludge Treatment by Anaerobic Digestion and Pyrolysis Gasification Coupling Technology[J].China Water & Wastewater,2023,39(16):110-115.
Municipal Sludge Treatment by Anaerobic Digestion and Pyrolysis Gasification Coupling Technology
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第16期
Page:
110-115
Column:
Date of publication:
2023-08-17
- Keywords:
- sludge anaerobic digestion; sludge thermal drying; sludge pyrolysis gasification and incineration; waste heat recovery
- Abstract:
- Sludge treatment processes and technologies such as anaerobic digestion, drying and incineration, and pyrolysis gasification and incineration must be considered at the stage of high?quality development and implementing “carbon emission reduction and carbon neutrality” policy. Phase Ⅰ sludge of Zhengzhou New Area wastewater treatment plant (WWTP) adopts sludge anaerobic digestion and drying process, and phase Ⅱ sludge adopts pyrolysis gasification and incineration process. On the basis of phase Ⅰ and phase Ⅱ, the coupling of sludge anaerobic digestion, pyrolysis gasification and incineration is realized, and finally the reduction, harmlessness, stabilization and resource utilization are realized. The actual operation data of 1 000 t/d sludge anaerobic digestion and 100 t/d sludge gasification and incineration project of Zhengzhou New Area WWTP show that sludge anaerobic digestion and sludge incineration are not either one or the other. On the contrary, from the perspective of energy balance in the whole process, the coupling technology of sludge anaerobic digestion and sludge pyrolysis gasification is the optimal process combination to maximize energy utilization.
Last Update:
2023-08-17