Overview
The Hebei wastewater treatment plant serves Xuanhua District, Zhangjiakou, Hebei Province, China, with a population equivalent of 230,000. It operates under China's national wastewater discharge standards.
The Hebei wastewater treatment plant is located in Xuanhua District, Zhangjiakou City, Hebei Province, China. It serves a population of approximately 230,000, classifying it as a medium-to-large agglomeration under Chinese wastewater management frameworks. The plant is situated in an inland area, more than 50 km from the coast, and its operations are subject to China's national discharge standards (GB 18918-2002) which mandate secondary treatment as a baseline for urban plants. The plant's performance is assessed based on regulatory expectations. For a plant serving 230,000 people, Chinese regulations typically require secondary biological treatment with nutrient removal in sensitive watersheds. The plant likely employs conventional activated sludge or similar technology to meet Class 1A or 1B discharge standards, depending on local environmental requirements. The treated effluent is discharged into a local watercourse within the Hai River basin, which ultimately flows into the Bohai Sea. The plant plays a critical role in protecting downstream aquatic ecosystems and supporting water quality in the region. Its operation helps mitigate pollution from urban and industrial sources, contributing to the ecological health of the Hai River system and the Bohai Sea.
Environmental context
The plant discharges into a tributary of the Hai River system, which drains into the Bohai Sea. The Hai River basin is a densely populated and industrialized region facing significant water quality challenges, including eutrophication and heavy metal pollution. The plant's treatment performance directly affects the ecological health of downstream rivers and the Bohai Sea, which supports diverse marine life and important fisheries. Effective nutrient removal is critical to prevent algal blooms and hypoxia in the coastal zone.
Frequently asked questions
The Hebei wastewater treatment plant is located in Xuanhua District, Zhangjiakou City, Hebei Province, China. It serves the urban area of Xuanhua.
The plant serves a population equivalent of approximately 230,000 people, classifying it as a medium-to-large urban wastewater treatment facility.
The treated effluent is discharged into a local watercourse within the Hai River basin, which ultimately flows into the Bohai Sea. The plant must meet China's national discharge standards to protect downstream water quality.
The plant operates under China's national wastewater discharge standards (GB 18918-2002), which set limits for pollutants such as COD, BOD, ammonia, and phosphorus. Plants serving over 100,000 people are typically required to achieve secondary treatment with nutrient removal.
For a plant of this scale in China, standard treatment includes primary sedimentation followed by secondary biological treatment, often using activated sludge or biofilm processes. In sensitive watersheds, tertiary treatment for nitrogen and phosphorus removal may be required to meet Class 1A standards.
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