1. Ziyang Sewage Treatment Plant has a total investment of 75 million yuan, covering an area of ??more than 50 acres and 17 kilometers of main sewage interception pipes. Among them, the sewage interception main pipes arranged along the east and west banks of the Tuojiang River will collect sewage from Xicheng District and Dongcheng District. A sewage interception main pipe is arranged along the Jiuqu River (6.7 kilometers has been completed so far) to collect sewage from the Ziyang Locomotive and Rolling Stock Factory area, Sunjiaba area, and the old city. This interception pipe on the east bank of the Jiuqu River and Tuojiang River The sewage main pipe merges with the sewage interception main pipe on the west bank of Tuojiang River and directly enters the sewage plant for treatment. After being put into use, 80% of the sewage in Ziyang can be treated. The treated sewage will be discharged into the Tuojiang River after it meets the national discharge standards. Located in Dayan Labor Camp Sewage Treatment Plant, Nanjiapo No. 2, Ziyang City, a sewage treatment plant with a daily sewage treatment capacity of 500 tons has been built. After being put into trial operation in early July, it can process about 300 tons of sewage per day. Currently, the Yanjiang District Environmental Protection Bureau is tracking and testing the sewage treatment of the institute to ensure that the treated sewage meets the standards before being discharged into the Jiuqu River. The putting into use of the sewage treatment plant of the Dayan Labor Camp will play a certain role in changing the water quality of the upper reaches of the Jiuqu River. The domestic sewage from the labor camp will no longer cause new pollution to the lower reaches of the Jiuqu River. In addition, Jianyang, Lezhi, and Anyue all have urban sewage treatment plants. Yingying Reservoir Wangxiang Sewage Treatment Station, Anyue County Xinglong Town Sewage Treatment Plant