Overview
Nei Mongol wastewater treatment plant serves Zalaid Banner in Inner Mongolia, China, with a population equivalent of 57,500. The facility operates under China's national wastewater discharge standards.
The Nei Mongol wastewater treatment plant is located in Zalaid Banner (扎赉特旗), a county-level division under the administration of Hinggan League in Inner Mongolia, China. The facility serves an estimated population of 57,500 people in the urban area of Yinde'er Town and surrounding communities, forming a medium-sized agglomeration for the region. As a Chinese municipal wastewater treatment plant, it operates under the national Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), which sets effluent limits for conventional pollutants, nutrients, and heavy metals. For a plant of this scale, secondary biological treatment is typically required, with potential nutrient removal in sensitive watersheds. Standard practice for similar plants in China includes activated sludge or oxidation ditch processes. The plant discharges treated effluent into local waterways that ultimately drain into the Nen River system, a major tributary of the Songhua River basin. This watershed supports agricultural irrigation and freshwater ecosystems in northeastern China. Proper treatment is critical to prevent eutrophication and protect downstream water quality in the Songhua River, which flows into the Amur River and eventually the Sea of Okhotsk.
Environmental context
The plant's receiving water body is part of the Nen River basin, which flows into the Songhua River and then the Amur River, discharging into the Sea of Okhotsk. This watershed supports diverse aquatic life and provides water for agriculture and fisheries. Nutrient loading from wastewater could contribute to eutrophication in downstream lakes and rivers, making effective treatment essential for ecological health.
Frequently asked questions
The plant is located in Zalaid Banner (扎赉特旗), Hinggan League, Inner Mongolia, China, specifically in Yinde'er Town.
The plant serves approximately 57,500 people, classifying it as a medium-sized agglomeration under Chinese municipal wastewater standards.
Treated effluent is discharged into local waterways that flow into the Nen River, a tributary of the Songhua River, which eventually reaches the Amur River and the Sea of Okhotsk.
The plant operates under China's GB 18918-2002 discharge standard, which sets limits for pollutants like COD, BOD, ammonia, and phosphorus. For plants of this scale, secondary treatment with nutrient removal is typically required.
For a medium-sized agglomeration in China, common treatment processes include activated sludge, oxidation ditches, or sequencing batch reactors, often with biological nutrient removal to meet national standards.
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