Yunnan Wastewater Treatment Plant, Yingjiang County | China

The Yunnan wastewater treatment plant is located in Yingjiang County, Dehong Dai and Jingpo Autonomous Prefecture, Yunnan Province, China. It serves a population of approximately 36,000 people, classifying it as a medium-sized agglomeration under Chinese wastewater management frameworks. China's wastewater treatment regulations, including the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), mandate secondary treatment with nutrient removal for plants of this scale. Typical facilities in this region employ activated sludge processes to meet Class 1A or 1B discharge standards. The treated effluent likely discharges into a local river within the Irrawaddy River basin, which flows through Myanmar into the Andaman Sea. The plant plays a key role in protecting downstream aquatic ecosystems and supporting water quality in the region's agricultural and urban areas.

The plant is situated in the upper reaches of the Irrawaddy River basin, a major transboundary river system originating in Yunnan and flowing through Myanmar. The local watershed supports diverse aquatic life and provides water for irrigation and domestic use. Downstream, the river feeds into the Andaman Sea, an ecologically sensitive marine environment. Effective treatment at this plant helps reduce nutrient and pollutant loads, safeguarding both freshwater and coastal ecosystems.