Abstract:SUrban sewage treatment plants are the main bearers of pollution reduction and also the major carbon emitters. Therefore, the low carbon design of sewage treatment plants is particularly important under the background of "double carbon". Process optimization and clean production are the primary control factors for low carbon. By selecting advanced treatment processes and equipment, we can control energy consumption from the source, strengthen resource recovery and comprehensive utilization, reduce carbon emissions, and achieve the goal of sustainable development.From the perspective of "double carbon", this paper conducts an all-round analysis of low carbon design for sewage treatment plants in terms of clean energy utilization, process design, equipment selection, and intelligent control. At the same time, the selection direction of the future process of the sewage treatment plant is proposed, in order to provide a reference solution for the low carbon design of the sewage treatment plant.