Overview
Heilongjiang wastewater treatment plant serves Ning'an City in Heilongjiang Province, China, with a population equivalent of 104,000. The facility discharges into local waterways within the Amur River basin.
The Heilongjiang wastewater treatment plant is located in Ning'an City, a county-level city under the administration of Mudanjiang City in Heilongjiang Province, China. The plant serves a population equivalent of 104,000, placing it in the medium-to-large agglomeration category for Chinese wastewater infrastructure. China's wastewater treatment standards are governed by the national Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), which sets effluent limits based on receiving water sensitivity. For plants serving populations over 100,000, secondary treatment with nutrient removal is typically required to meet Class 1-A or 1-B standards, especially in environmentally sensitive areas. The plant's treated effluent is discharged into local rivers that ultimately flow into the Amur River system (Heilongjiang River), which forms the border between China and Russia and drains into the Sea of Okhotsk. The Amur basin supports diverse aquatic life, including salmon species, and is an important ecological corridor in Northeast Asia.
Environmental context
The plant discharges into tributaries of the Mudan River, which flows into the Songhua River, a major tributary of the Amur River (Heilongjiang). The Amur River basin is one of the world's largest undammed river systems, supporting rich biodiversity including endangered species such as the Amur tiger and Amur leopard in riparian zones. Downstream, the river enters the Sea of Okhotsk, a productive marine ecosystem. The region experiences cold continental winters, which can affect treatment efficiency and require robust infrastructure.
Frequently asked questions
The plant is located in Ning'an City, under the administration of Mudanjiang City, in Heilongjiang Province, China.
The plant serves a population equivalent of 104,000 people.
Treated effluent is discharged into local rivers that flow into the Mudan River, then the Songhua River, and eventually the Amur River system.
The plant operates under China's national standard GB 18918-2002, which requires secondary treatment with nutrient removal for plants serving over 100,000 people in sensitive areas.
The Amur River basin is a globally significant ecosystem supporting diverse aquatic life and serving as a migratory corridor for fish species. The downstream Sea of Okhotsk is a productive marine environment.
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