Hebei Wastewater Treatment Plant, Longhua County, Chengde | China

The Hebei wastewater treatment plant is located in Longhua County, Chengde City, Hebei Province, China, serving a population of approximately 66,900. The plant is situated inland, over 50 km from the coast, and discharges into local waterways that eventually drain into the Bohai Sea. As a medium-sized agglomeration, the plant 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 plants serving over 10,000 people. Typical facilities in this region employ activated sludge processes with biological nutrient removal. The treated effluent likely enters the Luan River system, which flows into the Bohai Sea. The receiving waters support aquatic ecosystems and are important for regional water resources. The plant plays a key role in protecting local water quality and downstream environments.

The plant discharges into the Luan River basin, which flows through Hebei Province and into the Bohai Sea. The Bohai Sea is a semi-enclosed marginal sea with significant ecological importance, supporting fisheries and marine biodiversity. The Luan River provides water for irrigation and domestic use, and its water quality is critical for both human and ecological health. The plant's operations help reduce nutrient and pollutant loads to the river and sea.