Guangdong Wastewater Treatment Plant, Zhaoqing, Guangdong Province, China

The Guangdong wastewater treatment plant is located in Zhaoqing, a prefecture-level city in Guangdong province, China. Situated near the Lingyang Gorge ancient trail and the Lingyang Mountain dock, the facility serves an estimated population of 500,000, placing it in the large agglomeration category under Chinese municipal wastewater management. As a major treatment facility in the Pearl River Delta region, 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 100,000 people. The plant's scale suggests it likely employs biological treatment processes such as activated sludge or A2O to achieve the required effluent quality. The treated wastewater from this plant ultimately discharges into the Pearl River system, which flows through Guangdong province and into the South China Sea. The Pearl River Delta is a densely populated and economically vital region, making proper wastewater treatment critical for protecting downstream aquatic ecosystems and coastal water quality. The plant plays a key role in reducing nutrient and pollutant loads to the river, supporting biodiversity and water quality in the delta.

The plant discharges into the Pearl River system, which flows through Guangdong province and empties into the South China Sea. The Pearl River Delta is a highly urbanized and industrialized region, and the river supports diverse aquatic life, including fish species important for local fisheries. Effective treatment at this plant helps mitigate eutrophication risks and protects downstream estuarine and coastal habitats.