摘要
Municipal wastewater treatment plays an indispensable role in enhancing water quality by eliminating contaminants.While the process is vital,its environmental footprint,especially in terms of greenhouse gas(GHG)emissions,remains underexplored.Here we offer a comprehensive assessment of GHG emissions from wastewater treatment plants(WWTPs)across China.Our analyses reveal an estimated 1.54(0.92-2.65)×10^(4)Gg release of GHGs(CO_(2)-eq)in 2020,with a dominant contribution from N_(2)O emissions and electricity consumption.We can foresee a 60-65%reduction potential in GHG emissions with promising advancements in wastewater treatment,such as cutting-edge biological techniques,intelligent wastewater strategies,and a shift towards renewable energy sources.
基金
funded by the National Natural Science Foundation,China(No.42122059 and No.52000135)
National Key Research and Development Program of China(No.2018YFE0106400)
Natural Science Foundation of Tianjin(20JCYBJC01080)
theWorld Bank through the Global Water Security&Sanitation Partnership.
