Overview
Heilongjiang wastewater treatment plant serves Nenjiang City in Heilongjiang, China, with a population of 130,000. It operates under China's national wastewater standards.
The Heilongjiang wastewater treatment plant is located in Nenjiang City, within the Nenjiang River basin in Heilongjiang Province, China. The facility serves an estimated population of 130,000, placing it in the medium-to-large agglomeration category for Chinese municipal wastewater infrastructure. Under China's national wastewater discharge standards (GB 18918-2002), plants serving populations above 100,000 are typically required to achieve at least secondary treatment with nutrient removal in sensitive areas. The regulatory framework for this scale of facility emphasizes compliance with Class 1-A or 1-B effluent standards depending on the receiving water body's sensitivity. The treated effluent is discharged into the Nenjiang River, a major tributary of the Songhua River, which ultimately flows into the Amur River (Heilongjiang) and then to the Sea of Okhotsk. The Nenjiang River supports diverse aquatic life and is an important water source for agriculture and communities in the region. Proper treatment is critical to protect downstream water quality and ecological health.
Environmental context
The plant discharges into the Nenjiang River, which flows into the Songhua River and then the Amur River (Heilongjiang), eventually reaching the Sea of Okhotsk. This river system supports diverse aquatic ecosystems and provides water for irrigation and municipal use. The region's cold climate and seasonal ice cover require robust treatment to maintain year-round water quality.
Frequently asked questions
The plant is located in Nenjiang City (嫩江市), within Nenjiang Town, in the Heihe prefecture of Heilongjiang Province, China.
The plant serves approximately 130,000 people, classifying it as a medium-to-large agglomeration under Chinese wastewater regulations.
The treated effluent is discharged into the Nenjiang River, a major tributary of the Songhua River, which flows into the Amur River and eventually the Sea of Okhotsk.
The plant operates under China's GB 18918-2002 discharge standards. For facilities serving over 100,000 people, secondary treatment with nutrient removal is typically required, especially in sensitive watersheds like the Nenjiang River basin.
Plants of this scale in China are generally expected to achieve at least secondary treatment, often with advanced nutrient removal to meet Class 1-A or 1-B standards, depending on the receiving water body's sensitivity and local environmental requirements.
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