Liaoning Wastewater Treatment Plant, Fengcheng, Liaoning, China

The Liaoning wastewater treatment plant is located in Fengcheng, Liaoning Province, China, serving an estimated population of 190,000. It is situated in the urban area of Fenghuangcheng Street, providing essential sanitation services to the city's residents and industries. As a plant serving a medium-to-large agglomeration, it is expected to meet China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002), which mandates secondary treatment with nutrient removal for facilities of this scale. Typical Chinese plants of this size employ activated sludge processes with biological nitrogen and phosphorus removal. The treated effluent is discharged into local waterways that ultimately drain into the Yalu River system, which flows into the Korea Bay of the Yellow Sea. The plant plays a critical role in protecting downstream aquatic ecosystems and maintaining water quality in the region's river basins.

The plant's discharge enters the local river network, which is part of the Yalu River basin. The Yalu River forms the border between China and North Korea and empties into the Korea Bay, a semi-enclosed sea area with significant ecological importance. The downstream environment supports diverse aquatic life and is a vital migratory corridor for fish species. Protecting water quality in this basin is essential for regional biodiversity and fisheries.