Yunnan Wastewater Treatment Plant, Gucheng District, Lijiang, Yunnan

Yunnan wastewater treatment plant is located in Gucheng district, Lijiang, Yunnan Province, China. It serves a population of approximately 82,400 residents in the urban area, operating as part of the municipal wastewater infrastructure for this historic city at the foot of the Jade Dragon Snow Mountain. As a medium-sized agglomeration, the plant is expected to comply with China's national wastewater discharge standards, which require secondary treatment for urban wastewater. It operates under the regulatory framework of China's Water Pollution Prevention and Control Law, which sets effluent limits for pollutants like COD, BOD, and ammonia nitrogen. The treated effluent is discharged into local rivers that ultimately flow into the Jinsha River, a major tributary of the Yangtze River. This watershed supports diverse aquatic life and provides water for agriculture and communities downstream. The plant plays a key role in protecting water quality in the region, which is ecologically sensitive due to its proximity to the Three Parallel Rivers UNESCO World Heritage site.

The plant discharges into local waterways that drain into the Jinsha River, a major tributary of the upper Yangtze River. This watershed is ecologically significant, supporting diverse aquatic species and providing water for irrigation and drinking water downstream. The region's mountainous terrain and seasonal rainfall patterns influence flow rates and pollutant dilution, making effective treatment crucial for maintaining water quality in this sensitive alpine environment.