Fujian Wastewater Treatment Plant, Longyan, Fujian Province

The Fujian wastewater treatment plant is located in Shanghang County, Longyan City, Fujian Province, China. It serves a population equivalent of 120,000, classifying it as a medium-to-large agglomeration under Chinese municipal wastewater management. As a plant in China, it is subject to the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), which sets limits for key pollutants. For a facility of this scale, secondary treatment with nutrient removal is typically required to meet Class 1-A or 1-B standards, depending on the receiving water body's sensitivity. The plant discharges into local waterways that ultimately drain into the Han River basin, which flows into the Taiwan Strait. The downstream environment supports diverse aquatic life and is important for regional water quality and ecological balance.

The plant's treated effluent enters local streams that feed into the Han River system, which flows through Fujian Province and discharges into the Taiwan Strait. The downstream watershed supports freshwater and estuarine habitats, including fish spawning grounds and migratory bird corridors. Maintaining low nutrient and pollutant loads is critical to prevent eutrophication and protect aquatic biodiversity in the coastal zone.