Hunan Wastewater Treatment Plant, Tianyue Subdistrict, Yueyang, Hunan, China

The Hunan wastewater treatment plant is located in Tianyue Subdistrict, Pingjiang County, Yueyang, Hunan Province, China. It serves a population of approximately 152,000 people, classifying it as a medium-to-large agglomeration under typical Chinese municipal wastewater standards. The plant is situated near the Mi River Bridge, indicating its proximity to the Mi River, a tributary of the Xiang River system. As a facility serving over 150,000 people, the plant is expected to meet secondary treatment standards under China's national wastewater discharge regulations (GB 18918-2002). These standards require effective removal of organic pollutants and suspended solids. The plant's operational details, including specific treatment processes and capacity, are not publicly available, but its scale suggests it plays a critical role in local water quality management. The treated effluent from the plant likely discharges into the Mi River, which flows into the Xiang River and eventually into Dongting Lake, a major freshwater lake in Hunan. Dongting Lake is an ecologically significant water body that supports diverse aquatic life and serves as a crucial flood storage basin. The plant's performance directly affects the health of this downstream ecosystem.

The plant discharges into the Mi River, a tributary of the Xiang River, which flows into Dongting Lake, one of China's largest freshwater lakes. Dongting Lake is a vital ecological zone supporting diverse fish species and migratory birds. The lake also plays a key role in flood regulation and water supply for the region. Protecting water quality in this watershed is essential for maintaining the ecological balance and the livelihoods of communities downstream.