Liaoning Wastewater Treatment Plant, Jinzhou District, Liaoning Province

The Liaoning wastewater treatment plant is situated in the Jinzhou District of Liaoning Province, China, serving a population of approximately 400,000. The facility operates as part of the municipal wastewater infrastructure for the region, which includes the city of Dalian and its surrounding areas. With a designed capacity of 1.00 unit, the plant plays a key role in managing wastewater from this densely populated urban area. As a large-scale treatment facility serving over 150,000 people, the plant falls under China's national wastewater discharge standards, which are aligned with the country's Water Pollution Prevention and Control Law. These regulations require secondary treatment as a minimum for such agglomerations, with tertiary treatment often mandated in environmentally sensitive areas. The regulatory framework ensures compliance with effluent quality standards for large urban centers. The plant's discharge likely flows into local water bodies that drain into the Yellow Sea, given its proximity to the coast (within 50 km). The receiving waters support diverse aquatic life and are important for regional fisheries and marine ecosystems. Effective treatment at this facility is critical to prevent nutrient loading and pollution in coastal waters, which are vital for both ecological health and economic activities such as fishing and tourism.

The plant is located within 50 km of the coast, indicating its discharge likely reaches the Yellow Sea via local rivers or drainage networks. The Yellow Sea is a semi-enclosed marginal sea with significant ecological importance, supporting diverse marine life including fish, crustaceans, and migratory birds. The region's coastal waters are sensitive to nutrient pollution from urban wastewater, which can lead to eutrophication and harmful algal blooms. Proper treatment at this facility helps protect downstream marine habitats and the livelihoods of communities dependent on coastal resources.