Nei Mongol Wastewater Treatment Plant, Tuoketuo County, Inner Mongolia

The Nei Mongol wastewater treatment plant is located in Tuoketuo County (Togtokh siyan), part of Hohhot City in Inner Mongolia, China. It serves a population of approximately 42,000 residents in the surrounding area. As a municipal treatment facility in China, the plant is subject to the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002), which sets effluent limits for various pollutants. For a plant of this scale, 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's treated effluent likely discharges into a local watercourse that flows through the Yellow River basin, as the region is part of the Yellow River watershed. The Yellow River is a major ecological and economic resource in northern China, supporting agriculture, industry, and aquatic life. Proper treatment helps protect downstream water quality and ecosystems.

The plant is located in the Yellow River basin, one of China's most important river systems. The Yellow River flows through arid and semi-arid regions, making water quality critical for irrigation, drinking water, and ecological health. Downstream, the river supports diverse aquatic habitats and eventually reaches the Bohai Sea. Effective wastewater treatment in this region helps reduce nutrient and pollutant loads, protecting both freshwater and marine environments.