Guizhou Water Investment Water Group Xi feng Water Environment Development Co., Ltd. Xifeng County Town Sewage Treatment Plant New Construction Project, this project maintains a treatment capacity of 14000m3/d, and the discharge standard after completion is the first level A standard of the “Pollutant Discharge Standard for Urban Sewage Treatment Plants” (GB18918-2002).

The main structures of this project are sludge thickener, dosing room, blower room, and denitrification filter. The above buildings are located in the north of the integrated oxidation ditch constructed in Phase II. The original integrated oxidation ditch process is changed to the integrated oxidation ditch+denitrification filter process for operation in this project.