Shaanxi Wastewater Treatment Plant, Sanyuan County, Shaanxi, China

The Shaanxi wastewater treatment plant is located in Sanyuan County, Xianyang City, Shaanxi Province, China. It serves a population of approximately 120,000, classifying it as a medium-to-large agglomeration under Chinese wastewater management standards. The plant is situated inland, away from coastal areas, and its operations are part of the regional water infrastructure in the Wei River basin. Chinese regulations require secondary treatment for municipal wastewater plants serving populations over 100,000. The plant likely meets these standards, with potential for advanced treatment depending on local environmental requirements. The population served suggests a facility of significant scale. The plant discharges treated effluent into local waterways that ultimately flow into the Wei River, a major tributary of the Yellow River. This river system supports agricultural irrigation and industrial water use in the region. The plant plays a key role in protecting water quality in the densely populated Guanzhong Plain, helping to reduce pollution loads before discharge.

The plant's treated effluent enters local streams that drain into the Wei River, which flows eastward to join the Yellow River. The Wei River basin is a heavily agricultural and industrial region, making wastewater treatment critical for controlling nutrient and pollutant loads. The downstream Yellow River is ecologically significant, supporting diverse aquatic life and providing water for millions of people. Effective treatment at this plant helps mitigate eutrophication and protects downstream water quality.