当前位置: X-MOL 学术Resour. Conserv. Recycl. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A simulation-assessment-optimization approach towards energy self-sufficiency and carbon reduction in regional-scale sewage systems
Resources, Conservation and Recycling ( IF 13.2 ) Pub Date : 2022-08-26 , DOI: 10.1016/j.resconrec.2022.106595
Xiao Ma, Tianyuan Zhang, Yulei Xie, Qian Tan

Utilizing renewable energy is a practical pathway for realizing energy self-sufficiency and offsetting carbon emissions in wastewater treatment plants (WWTPs). The holistic optimization of hybrid renewable energy of multiple WWTPs overweighs individual WWTPs studies by providing global optimal solutions and cost-effective resources management schemes with expended spatial scales. Few studies have focused on the overall optimal utilization and management of hybrid renewable energy from WWTPs on a regional scale. This study aims to explore how to optimize the configuration of renewable energy facilities for multiple WWTPs to achieve the cost-effective use of renewable energy for the overall system. Uncertainty associated with PV power generation and the size effects of WWTPs were considered in the general framework to enhance the reliability and cost effectiveness of the utilization of renewable energy. The developed approach was then applied to the hybrid renewable energy management of a city-scale WWTP system comprising 31 plants in Guangzhou, China. Results indicated that the energy self-sufficiency of sewage systems can be realized by recovering renewable energy. The levelized cost of energy generation in the overall system was approximately 0.19 CNY/kW·h, and the overall reduction in greenhouse gas (GHG) emissions was approximately 129.5 t CO2-eq/d. The overall optimization reduced the total cost by approximately 3% than did the traditional individual WWTP studies. The thermal energy recovered from wastewater could further reduce the operational costs of WWTPs through carbon credit trading. The developed approach can also be applied to other areas of the world to promote sustainable wastewater treatment and strengthen the utilization of renewable energy.

更新日期:2022-08-27
down
wechat
bug