Sustainable Mining and Metallurgy

Urban wastewater treatment is an energy intensive and high energy consuming industry, its carbon emissions accounting for 1%~2% of the total emissions of society. In the context of the “Dual Carbon” target, reducing pollution and carbon emission, low carbon , green and sustainable development has become the main development direction of future wastewater treatment plant. This article analyzed the composition and source of greenhouse gases in wastewater and sludge treatment process, and summarized the current technologies and application cases for carbon reduction in wastewater treatment plant at home and abroad from the perspectives of process operation optimization, resource and energy recovery, clean energy utilization, and low carbon new process development. The article also proposed prospects for achieving carbon reduction in urban wastewater treatment plants in China, in order to provide reference for the promotion and application of low carbon technologies in wastewater treatment plant.