Overview
The Henan wastewater treatment plant serves Xiangcheng City in Henan Province, China, with a population of 220,000. It operates under China's national wastewater discharge standards, which mandate secondary treatment for urban plants.
The Henan wastewater treatment plant is located in Xiangcheng City, part of Zhoukou Prefecture in Henan Province, China. It serves a population of approximately 220,000, classifying it as a medium-to-large urban agglomeration under Chinese wastewater regulations. China's national standards, including the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002), require secondary biological treatment for plants serving populations over 100,000. The regulatory framework ensures compliance with effluent quality standards for pollutants such as COD, BOD, and ammonia nitrogen. The plant discharges treated wastewater into local waterways that eventually drain into the Huai River basin, a major river system in eastern China. The Huai River flows into the Yellow Sea, supporting agricultural irrigation and aquatic ecosystems. Proper treatment is critical to prevent eutrophication and protect downstream water quality.
Environmental context
The plant's treated effluent enters local tributaries of the Huai River, which flows through Henan and Anhui provinces before reaching the Yellow Sea. The Huai River basin is ecologically sensitive, supporting diverse aquatic life and providing water for agriculture and industry. Effective nutrient removal is essential to mitigate algal blooms and maintain the health of downstream wetlands and coastal zones.
Frequently asked questions
The Henan wastewater treatment plant is located in Xiangcheng City, Zhoukou Prefecture, Henan Province, China, near the S238 road in Qianfo Ge Street.
The plant serves approximately 220,000 people, making it a medium-to-large urban agglomeration under Chinese wastewater regulations.
The plant discharges into local waterways that are part of the Huai River basin. The Huai River flows through Henan and Anhui provinces to the Yellow Sea, supporting agriculture and ecosystems.
The plant operates under China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002), which requires secondary treatment and sets limits on pollutants like COD, BOD, and ammonia nitrogen for plants of this scale.
For urban agglomerations over 100,000 people, Chinese regulations mandate secondary biological treatment, often including activated sludge processes, to meet Class 1A or 1B effluent standards.
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