Henan Wastewater Treatment Plant, Yiyang County, Luoyang

The Henan wastewater treatment plant is located in Jinping Town, Yiyang County, within the city of Luoyang in Henan Province, China. It serves a population of approximately 84,500, placing it in the medium-sized agglomeration category for Chinese municipal wastewater infrastructure. Under China's national wastewater discharge standards (GB 18918-2002), plants serving populations of this scale are typically required to achieve at least secondary treatment, with more stringent nutrient removal standards applicable in sensitive watersheds. Regulatory compliance is enforced through provincial environmental protection bureaus. The plant discharges treated effluent into local waterways that ultimately drain into the Yellow River basin, a major river system in northern China. The receiving water body supports agricultural irrigation and industrial uses downstream, making effective treatment essential for protecting water quality and ecosystem health in the region.

The plant's treated effluent flows into tributaries of the Yellow River, which is the second-longest river in China and a critical water source for agriculture, industry, and domestic use across multiple provinces. The Yellow River basin supports diverse aquatic life and is ecologically sensitive due to high sediment loads and seasonal water scarcity. Proper wastewater treatment is vital to prevent eutrophication and contamination in this heavily utilized watershed.