Overview
Nei Mongol wastewater treatment plant serves Ulanhot in Inner Mongolia, China, with a population equivalent of 38,000. It operates under China's national wastewater discharge standards.
The Nei Mongol wastewater treatment plant is located in Ulanhot (乌兰浩特市), a city in the Hinggan League of Inner Mongolia, China. The facility serves a population of approximately 38,000, placing it in the medium-sized agglomeration category for Chinese municipal wastewater treatment. Under China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), plants of this scale are typically required to meet Class 1-A or 1-B standards depending on the receiving water body's sensitivity. Chinese regulations mandate secondary biological treatment as a baseline for urban plants. The plant discharges treated effluent into local waterways that ultimately drain into the Nen River system, a tributary of the Songhua River basin. This watershed supports agricultural irrigation and aquatic ecosystems in northeastern China, making proper nutrient removal important for downstream water quality.
Environmental context
The plant's treated effluent flows into the Nen River watershed, which drains into the Songhua River and eventually the Sea of Okhotsk via the Amur River. This basin supports diverse aquatic life and provides water for agriculture in the region. The area's cold continental climate means seasonal flow variations, with higher dilution in summer and lower flows in winter, requiring consistent treatment performance year-round.
Frequently asked questions
The plant is located in Ulanhot (乌兰浩特市), Hinggan League, Inner Mongolia Autonomous Region, China, at coordinates 46.066 N, 122.127 E.
The plant serves a population equivalent of approximately 38,000 people, classifying it as a medium-sized municipal wastewater treatment facility.
Treated effluent from the plant is discharged into local waterways that flow into the Nen River system, part of the larger Songhua River basin.
The plant operates under China's GB 18918-2002 discharge standard, which sets limits for pollutants like COD, BOD, ammonia, and phosphorus. Plants of this scale typically require secondary biological treatment.
For medium-sized agglomerations in China, standard treatment includes primary sedimentation followed by activated sludge or similar biological processes, with possible tertiary treatment if discharging into sensitive water bodies.
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