Hubei Wastewater Treatment Plant, Zhushan County, Hubei, China

The Hubei wastewater treatment plant is located in Zhushan County, Shiyan, Hubei Province, China, serving a population of approximately 75,000. The facility is part of the municipal wastewater infrastructure for the region, treating domestic sewage from the county and surrounding areas. As a plant serving a medium-sized agglomeration, it is expected to comply with China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002), which sets effluent limits for chemical oxygen demand, biochemical oxygen demand, suspended solids, and nutrients. Treatment typically involves secondary biological processes such as activated sludge or sequencing batch reactors to meet these standards. The plant's treated effluent is discharged into local waterways that eventually flow into the Han River, a major tributary of the Yangtze River. The Han River basin supports diverse aquatic life and provides water for agriculture and industry downstream. Proper treatment helps protect water quality in this ecologically significant watershed.

The plant discharges into tributaries of the Han River, which flows into the Yangtze River, one of China's most important water bodies. The Han River basin supports diverse aquatic ecosystems and provides drinking water for millions. Effective wastewater treatment is critical to prevent eutrophication and protect downstream habitats, including fish spawning grounds and wetlands.