Guizhou Wastewater Treatment Plant, Bijie | Serving 190,000 in Guizhou Province

The Guizhou wastewater treatment plant is located in Bijie City, Guizhou Province, China, serving an estimated population of 190,000. As a municipal facility in a rapidly urbanizing region, it plays a key role in managing wastewater from the city's residential and commercial areas. Under China's national wastewater discharge standards (GB 18918-2002), plants serving agglomerations of this size are typically required to achieve at least secondary treatment, with some facilities in sensitive watersheds mandated to meet stricter Class 1A or 1B limits. The regulatory framework ensures compliance with effluent quality standards. The treated effluent is discharged into local water bodies that eventually flow into the Yangtze River basin, contributing to the protection of downstream ecosystems. The plant's operation supports water quality in the region, which is part of the upper Yangtze watershed, an area important for biodiversity and water supply.

The plant discharges into tributaries of the Yangtze River, one of China's most significant water systems. The local watershed supports diverse aquatic life and provides water for agriculture and communities downstream. Effective treatment is critical to prevent nutrient pollution and protect the ecological health of the Yangtze basin, which faces pressures from industrial and urban development.