Nei Mongol Wastewater Treatment Plant, Tongliao, Inner Mongolia

The Nei Mongol wastewater treatment plant is located in Tongliao (通辽市), a prefecture-level city in Inner Mongolia, China. Serving a population equivalent of 380,000, it is a significant municipal facility for the region. The plant is situated in the Horqin District, near the Huolin River, and plays a key role in managing wastewater from residential and industrial sources. As a large-scale treatment plant in China, it operates under the national regulatory framework for wastewater treatment, which mandates secondary treatment for urban facilities serving populations over 100,000. The plant's capacity and treatment processes are designed to meet these standards, ensuring compliance with Chinese environmental protection laws. The facility is part of China's broader efforts to improve water quality in the Huai River and other major basins. The treated effluent from the plant is discharged into the Huolin River, a tributary of the Liao River system, which ultimately flows into the Bohai Sea. This discharge supports the ecological health of the river and downstream environments, including wetlands and agricultural areas. The plant's operation is critical for protecting water quality in the Liao River basin and the Bohai Sea coastal zone.

The Nei Mongol plant discharges into the Huolin River, which flows into the Liao River and eventually reaches the Bohai Sea. This watershed supports diverse aquatic life and is important for regional agriculture and fisheries. The plant's effluent management helps mitigate pollution in this ecologically sensitive river system, which faces pressures from urbanization and industrial activity in Inner Mongolia.