This study is based on the carbon dioxide peaking and carbon neutrality.It is a systematic analysis for the developing concept of ecological civilization in the new era.In class"Environmental Issues Cognition and Investigation"and"air pollution control engineering",we will discuss low-carbon water treatment technology,energy transformation in water pollution control,resource recovery for water pollution control,integrated pollution control of water and air,and policy support.The relationship between wastewater treatment with carbon peaking and carbon neutrality was summarized,laying the theoretical foundation for combining technological development with dual carbon.It provides development ideas for water pollution control in the new era.