Overview
Liaoning wastewater treatment plant serves Gongchangling District, Liaoning Province, China, with a population equivalent of 120,000. The facility operates under China's national wastewater discharge standards.
The Liaoning wastewater treatment plant is located in Gongchangling District, a district of Liaoyang City in Liaoning Province, China. Serving a population of approximately 120,000, the plant is a key component of the region's municipal wastewater infrastructure, handling domestic sewage from the urban area. As a medium-to-large agglomeration in China, the plant is subject to the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), which sets effluent limits for COD, BOD, ammonia nitrogen, and total phosphorus. The standard requires secondary treatment as a baseline, with tertiary treatment mandated for plants discharging into sensitive water bodies. Typical plants of this scale employ activated sludge or similar biological treatment. The treated effluent is discharged into local waterways that ultimately drain into the Liao River basin, a major river system in Northeast China. The Liao River flows into the Bohai Sea, a semi-enclosed marginal sea of the Pacific Ocean. The plant plays a crucial role in protecting the downstream aquatic environment from nutrient pollution and organic loading, supporting the ecological health of the Liao River and Bohai Sea.
Environmental context
The plant discharges into the Liao River basin, which flows through Liaoning Province and empties into the Bohai Sea. The Liao River is a vital water source for agriculture and industry but has faced significant pollution challenges from urban and industrial discharges. The Bohai Sea is a semi-enclosed sea with limited water exchange, making it sensitive to nutrient enrichment and algal blooms. The plant's treatment performance directly affects the water quality of these downstream ecosystems, supporting biodiversity and fisheries.
Frequently asked questions
The plant is located in Gongchangling District, Liaoyang City, Liaoning Province, China, along the Shenhuan Line in Anping Subdistrict.
The plant serves a population equivalent of 120,000, making it a medium-to-large municipal wastewater treatment facility.
The treated effluent is discharged into local waterways that are part of the Liao River basin, which ultimately flows into the Bohai Sea.
The plant operates under China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), which sets effluent limits for key pollutants and requires secondary treatment as a minimum.
For a plant of this scale in China, secondary biological treatment (e. g. , activated sludge) is standard, with tertiary treatment required if discharging into sensitive water bodies.
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