Hebei Wastewater Treatment Plant, Sanhe, Hebei Province, China

The Hebei wastewater treatment plant is located in Dongguan Village, Dingsheng East Street, Sanhe City, Langfang City, Hebei Province, China. It serves a population equivalent of 30,000, classifying it as a medium-sized agglomeration under typical municipal wastewater frameworks. As a facility in China, the plant operates under national wastewater discharge standards, which mandate secondary treatment for urban wastewater. Chinese regulations require compliance with the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), which sets limits on key pollutants. The plant discharges treated effluent into local water bodies that ultimately drain into the Bohai Sea via the Hai River system. This watershed supports diverse aquatic life and is important for regional water resource management. Proper treatment helps protect downstream ecosystems and reduce nutrient loading into the coastal environment.

The plant's treated effluent flows into the Hai River basin, which drains into the Bohai Sea. This coastal sea is ecologically sensitive, supporting fisheries and migratory species. Nutrient and pollutant control from inland plants like Hebei is critical to prevent eutrophication and maintain water quality in the Bohai Sea.