Ningxia Hui Wastewater Treatment Plant, Jinfeng District, Yinchuan

Ningxia Hui wastewater treatment plant is located in Jinfeng District, Yinchuan, within the Ningxia Hui Autonomous Region of China. The facility serves a population of approximately 42,000 residents, placing it in the medium agglomeration category for Chinese municipal wastewater infrastructure. As a treatment plant in China, it operates under the national Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), which sets effluent limits based on receiving water sensitivity. For plants serving communities of this scale, secondary biological treatment with nutrient removal is typically required to meet Class 1-A or 1-B standards, especially when discharging into sensitive water bodies. The plant's treated effluent likely discharges into local waterways that drain into the Yellow River basin, a major river system in northern China. The Yellow River downstream supports irrigation, industrial use, and ecological flows in the arid Ningxia region, making effective wastewater treatment critical for water quality and regional water resource management.

The plant is situated in the Yellow River basin, approximately 50 km from the river's main channel. Treated wastewater likely flows into local canals or the Yuehai Lake system before reaching the Yellow River, which ultimately drains into the Bohai Sea. The region's semi-arid climate means that river flows are heavily regulated and water quality is a priority for downstream agricultural and ecological uses.