Shandong Wastewater Treatment Plant, Yiyuan County, Shandong, China

Shandong wastewater treatment plant is located in Yiyuan County, part of Zibo City in Shandong Province, China. Serving a population of 110,000, the plant is a key component of the region's municipal wastewater infrastructure, handling domestic sewage from the urban area. Under China's national wastewater discharge standards (GB 18918-2002), plants of this scale are typically required to achieve at least secondary treatment, with stricter limits for sensitive water bodies. It operates within the regulatory framework that mandates proper treatment to protect receiving waters. The plant discharges treated effluent into local waterways that eventually drain into the Yellow Sea via the Yi River and other tributaries. Proper treatment is essential to safeguard downstream aquatic ecosystems and water quality in the densely populated Shandong region.

The plant discharges into the Yi River basin, which flows through Shandong Province and ultimately reaches the Yellow Sea. The downstream environment supports diverse aquatic life and is used for irrigation and fisheries. Effective treatment is critical to prevent nutrient pollution and protect the ecological health of the river and coastal waters.