Shanxi Wastewater Treatment Plant, Datong, Shanxi, China

The Shanxi wastewater treatment plant is located in Wuling Town, Lingqiu County, Datong City, Shanxi Province, China. It serves a population of approximately 80,000 people, classifying it as a medium-sized municipal facility within the region's water infrastructure. Under China's national wastewater discharge standards (GB 18918-2002), plants serving populations of this scale are typically required to meet Class 1-A or 1-B effluent limits, which mandate secondary treatment with nutrient removal. The plant's treatment processes and capacity are aligned with these regulatory expectations to protect local water quality. The treated effluent from the plant is discharged into the local watershed, which ultimately drains into the Hai River system and flows into the Bohai Sea. This downstream connection underscores the plant's role in safeguarding both regional freshwater resources and the marine environment of the Bohai Gulf.

The plant discharges into the Hai River basin, which flows through northern China and empties into the Bohai Sea. The Bohai Sea is a semi-enclosed marginal sea that supports diverse marine life and is ecologically sensitive to nutrient pollution. Effective wastewater treatment is critical to prevent eutrophication and protect coastal ecosystems in this region.