Guangdong Wastewater Treatment Plant, Longmen County, Huizhou

The Guangdong wastewater treatment plant is located in Longmen County, within the city of Huizhou, Guangdong Province, China. It serves a population of approximately 61,000, classifying it as a medium-sized municipal facility in the region. As a Chinese wastewater treatment plant, it operates under the national Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002), which sets effluent limits for various pollutants. For a facility serving this population, 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's treated effluent is discharged into local waterways that ultimately drain into the Pearl River Delta, a major economic and ecological region in southern China. The delta supports diverse aquatic life and is an important migratory corridor for fish and birds. Proper treatment helps protect downstream water quality and the coastal environment of the South China Sea.

The plant discharges into local streams that flow into the Dongjiang River, a tributary of the Pearl River. The Pearl River Delta is a densely populated and industrialized region, making wastewater treatment critical for maintaining water quality. The downstream environment includes estuarine habitats that support diverse aquatic species and are important for fisheries and biodiversity.