Nei Mongol Wastewater Treatment Plant, Kangbashi District, Ordos, Inner Mongolia

The Nei Mongol wastewater treatment plant is located in Binhe Street, Kangbashi District, Ordos City, Inner Mongolia Autonomous Region, China. It serves an estimated population of 70,000 people, placing it in the medium-scale category for municipal wastewater treatment in the region. As a facility in China, the plant is subject to the national Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002), which sets effluent limits for conventional pollutants and nutrients. For a plant serving 70,000 people, secondary treatment with nutrient removal is typically required to meet Class 1-A or 1-B standards, depending on the receiving water's sensitivity. The plant discharges treated effluent into the local watershed, which ultimately drains into the Yellow River basin. The Yellow River is a major water source for northern China and supports diverse aquatic life, agriculture, and urban water supply. Proper treatment is essential to prevent eutrophication and protect downstream ecosystems.

The plant's treated effluent flows into the Yellow River basin, a critical water resource for northern China. The Yellow River supports irrigation, industrial use, and domestic supply for millions of people, and its ecological health is vital for biodiversity, including fish species and migratory birds. Effective nutrient removal helps prevent algal blooms and maintains water quality in this semi-arid region.