CUIChao,YAODawei,HAOShan,et al.Low-carbon Operation Practice of Sludge Treatment Based on Advanced Anaerobic Digestion Coupled with Biogas Power Generation[J].China Water & Wastewater,2026,42(6):115-120.
Low-carbon Operation Practice of Sludge Treatment Based on Advanced Anaerobic Digestion Coupled with Biogas Power Generation
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第42卷
Number:
第6期
Page:
115-120
Column:
Date of publication:
2026-03-17
- Keywords:
- sludge treatment; advanced anaerobic digestion; biogas power generation; low? carbon operation
- Abstract:
- Based on the advanced anaerobic digestion coupled with biogas power generation, the low-carbon operation analysis of the sludge treatment center of X reclaimed water plant in central area of Beijing showed that treatment of sludge with 80% moisture content was 398 700 t(1 092 t/d), and the average annual load rate was 80.4% in 2024. High load rate operation was maintained from March to June, with an average load of 84.7%. Biogas production was closely correlated with sludge treatment load and organic matter content, with an average annual organic pollution content of 64.1%, an annual biogas output of 2.135 9×107 m3 and a dry biogas yield of 267.9 m3/tDS. Biogas was mainly used in biogas boilers and biogas power generation, accounting for 43% and 51% respectively，and gradually realized 100% resource utilization. Though efficient operation of biogas consumption unit, the annual consumption of steam in thermal hydrolysis was 0.87 t/tDS, and the annual consumption of biogas boiler was 106.5 m3/tDS. The annual biogas power generation was 2.689 7×107 kW·h, and the annual electricity consumption was 277 kW·h/tDS. Self-generated electricity could cover 100% of the electricity consumption of sludge treatment production, and at the same time, the cumulative reduction of purchased electric energy and steam could reduce CO2 emission by about 37 400 t, with remarkable social, environmental and economic benefits. Production should strengthen the efficient operation of thermal hydrolysis, increase biogas production in digester and optimize biogas utilization strategy, optimize gas production and scientific gas distribution, improve the self-sufficiency rate of electric energy, and maximize the low-carbon production and operation of sewage treatment plant.
Last Update:
2026-03-17