Jilin Wastewater Treatment Plant - Jilin City, Jilin Province, China

The Jilin wastewater treatment plant is a municipal facility located in Jilin City, Jilin Province, China. It serves a population of approximately 167,000 residents, placing it in the medium-to-large agglomeration category for Chinese urban wastewater infrastructure. Under China's national wastewater discharge standards (GB 18918-2002), plants serving populations of this scale are typically required to achieve at least secondary treatment, with stricter nutrient removal standards applicable in sensitive watersheds. The regulatory framework ensures compliance with effluent quality standards. The treated effluent is discharged into the local water system, which ultimately drains into the Songhua River basin. The Songhua River flows through northeastern China before joining the Amur River and reaching the Sea of Okhotsk. The plant plays a key role in protecting downstream water quality and aquatic ecosystems in this major river basin.

The plant discharges into the Songhua River basin, a major waterway in northeastern China that flows through Jilin and Heilongjiang provinces before joining the Amur River. The river supports diverse aquatic life and is an important water source for agriculture and industry. Downstream, the Amur River forms the border with Russia and empties into the Sea of Okhotsk, a productive marine ecosystem. Protecting water quality in this basin is critical for regional ecological health and international water management.