Shaanxi Wastewater Treatment Plant, Yan'an, Shaanxi, China

The Shaanxi wastewater treatment plant is located in Yan'an, Shaanxi Province, China, serving a population of approximately 38,500. The plant is situated inland in the Loess Plateau region, an area characterized by its unique terrain and water scarcity challenges. As a municipal facility, it plays a key role in managing local wastewater for this medium-sized agglomeration. Under China's national wastewater discharge standards (GB 18918-2002), plants serving populations between 10,000 and 100,000 are typically required to meet Class 1-B or Class 1-A standards, depending on the receiving water body's sensitivity. These standards mandate secondary treatment with nutrient removal in sensitive areas. The regulatory framework ensures appropriate treatment levels for the local environment. The plant discharges into the local watershed, which ultimately drains into the Yellow River basin. The Loess Plateau is ecologically sensitive due to soil erosion and water conservation needs. Proper wastewater treatment is critical to protect downstream water quality and support regional ecological restoration efforts.

The plant is located in the Loess Plateau, a region with severe soil erosion and water scarcity. Its treated effluent likely enters a tributary of the Yellow River, which flows through northern China before reaching the Bohai Sea. The Yellow River basin supports diverse aquatic life and is vital for agriculture and drinking water. Effective treatment helps reduce nutrient and pollutant loads, protecting downstream ecosystems and supporting regional water security.