LIHang,DONGLi-chun,LIQi-chang,et al.Case of Tailwater Power Generation Project in a WWTP for Enhancing Energy Recovery[J].China Water & Wastewater,2023,39(24):122-126.
Case of Tailwater Power Generation Project in a WWTP for Enhancing Energy Recovery
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第24期
Page:
122-126
Column:
Date of publication:
2023-12-17
- Keywords:
- wastewater treatment plant; tailwater power generation; energy recovery; commissioning operation; energy consumption evaluation
- Abstract:
- In order to actively respond to the national “carbon peaking and carbon neutrality” strategy and comprehensively improve the utilization level of recycled water resources, a wastewater treatment plant (WWTP) in Chongqing adopted the “WWTP and small hydropower” mode, which only conducted technical transformation on the original tailwater discharge pipe, and used the tailwater after treatment to generate power and achieve its reuse. The project type selection, project layout, project design, commissioning operation, as well as energy consumption evaluation are introduced. After commissioning operation, the average power generation of the project is 1 950 kW·h/d, accounting for about 15% of the daily electricity consumption of the WWTP. The expected investment return rate is 11.2%, and the investment payback period is about 9 years. The comprehensive energy consumption index of the project only accounts for 4.45% of the national 10 000 yuan GDP energy consumption index. This project could provide theoretical support and case reference for the utilization of tailwater resource from a large number of dispersed small WWTPs, and achieve green circular development in the sewage treatment industry.
Last Update:
2023-12-17