Yunnan Wastewater Treatment Plant, Luoping County, Yunnan Province

The Yunnan wastewater treatment plant is located in Luoping County, Qujing City, Yunnan Province, China. It serves a population equivalent of 110,000, classifying it as a medium-to-large agglomeration under Chinese wastewater management frameworks. The plant is situated in the Jiulong Street area of Luoping, a county known for its karst landscapes and agricultural activity. Chinese regulations require secondary treatment for urban wastewater plants serving populations over 100,000. The plant likely employs conventional activated sludge or similar biological treatment to meet national discharge standards (GB 18918-2002). Designed capacity data is not publicly reported, but the population served suggests a capacity in the range of 20,000-30,000 m³/day. The plant discharges treated effluent into local waterways that ultimately drain into the Nanpan River, a tributary of the Pearl River system. The Pearl River basin supports diverse aquatic life and provides water for agriculture and industry downstream. Proper treatment is critical to protect water quality in this ecologically sensitive region.

The plant's treated effluent flows into local streams that feed the Nanpan River, part of the larger Pearl River basin. The Pearl River system is a major water source for southern China, supporting diverse freshwater ecosystems and providing irrigation for rice and other crops. The region's karst geology makes groundwater particularly vulnerable to contamination, underscoring the importance of effective wastewater treatment.