Yunnan Wastewater Treatment Plant, 戴家村, 南华县, 云南省

The Yunnan wastewater treatment plant is located in 戴家村, within 南华县, 楚雄彝族自治州, 云南省, China. It serves a population of about 29,000 people, making it a medium-sized agglomeration under Chinese wastewater management standards. As a plant in China, it operates under national regulations including the Water Pollution Prevention and Control Law and the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002). 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 treated effluent into local waterways that eventually drain into the Yangtze River basin, which flows eastward to the East China Sea. The surrounding region features karst topography and diverse aquatic ecosystems, making proper treatment essential for protecting downstream water quality and biodiversity.

The plant's treated effluent enters local streams within the Yangtze River basin, ultimately flowing into the East China Sea. The region's karst geology means groundwater and surface water are closely connected, so effective treatment is critical to prevent contamination of sensitive aquatic habitats that support endemic fish and invertebrate species.