Liaoning Wastewater Treatment Plant, Toudaoling, Liaoning Province

The Liaoning wastewater treatment plant is located in Toudaoling, Qingyuan Manchu Autonomous County, Fushun City, Liaoning Province, China. It serves a population equivalent of 63,000, classifying it as a medium-sized agglomeration under Chinese wastewater management frameworks. The plant is situated inland, away from coastal areas, and its operations are subject to national regulations. Under China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002), facilities of this scale are typically required to meet Class 1-A or 1-B standards depending on the receiving water body's sensitivity. The regulatory framework ensures that appropriate treatment levels are mandated to protect water quality. The plant discharges treated effluent into local waterways that ultimately drain into the Liao River basin, a major river system in Northeast China. The Liao River flows into the Bohai Sea, supporting diverse aquatic life and providing water for agricultural and industrial use. The plant's performance is critical for maintaining the ecological health of the Liao River and its downstream environments.

The plant's treated effluent enters the local watershed, which is part of the Liao River basin. The Liao River flows through Liaoning Province and discharges into the Bohai Sea, a semi-enclosed sea with significant ecological and economic importance. The river supports diverse aquatic species and provides water for irrigation and industry. Downstream, the Bohai Sea is a critical habitat for marine life and migratory birds, making pollution control essential for regional biodiversity.