Project Overview: This project is to renovate the environment of 274 villages in 8 towns and townships in Yunxiao County, including rural domestic sewage treatment project and rural domestic sewage collection project. A total of 206 sewage treatment stations are built, which are treated by multi-stage contact oxidation process. As well as raising the standards of 18 built sewage treatment stations and putting them into operation management; treating the sewage in Changshan Overseas Chinese Economic Development Zone, constructing 10 sewage treatment stations, with a pipeline network of about 10 kilometers, and a total sewage treatment scale of 375t/d, mainly involving the area Sewage collection and treatment in the four administrative villages.