The wastewater treatment facilities of the Guangzhou's Lijiao Water Purification Plant are at an average depth of 17 meters below ground. The wastewater goes through several processes such as grid screening to debris removal. The solid-liquid separation process can separate sludge from water, and the biological deodorization process can eliminate odors. The operation is fully enclosed, which minimizes the impact of odors and noise on the surrounding areas. Let's learn about the entire wastewater treatment process in the video!