Overview
Liaoning wastewater treatment plant serves Xinmin City, Liaoning Province, China, with a population of 130,000. The facility operates under China's national wastewater discharge standards.
The Liaoning wastewater treatment plant is located in Xicheng Subdistrict, Xinmin City, Liaoning Province, China. It serves a population of approximately 130,000, classifying it as a medium-to-large agglomeration under China's urban wastewater management framework. The plant is situated inland, more than 50 km from the coast, and its operations are governed by national discharge standards set by the Ministry of Ecology and Environment. As a facility serving over 100,000 people, the plant is expected to meet the Grade 1A or 1B discharge standards under China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). These standards require advanced treatment processes, including biological nutrient removal, to protect receiving water bodies. The plant's scale suggests it likely incorporates secondary or tertiary treatment to comply with regulatory requirements. The treated effluent from the plant 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 Liao River's water quality and the downstream Bohai Sea ecosystem from pollution associated with urban and industrial activities.
Environmental context
The plant discharges into the Liao River basin, which flows through Liaoning Province and empties into the Bohai Sea. The Liao River supports diverse aquatic life and is an important water resource for agriculture and industry. The Bohai Sea is a semi-enclosed sea with limited water exchange, making it sensitive to nutrient pollution that can cause eutrophication and harmful algal blooms. The plant's treatment performance directly affects the ecological health of these downstream waters.
Frequently asked questions
The plant is located in Xicheng Subdistrict, Xinmin City, Liaoning Province, China.
The plant serves approximately 130,000 people in Xinmin City and surrounding areas.
The treated effluent is discharged into local waterways within 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 limits on pollutants like COD, BOD, ammonia, and phosphorus. For a plant serving over 100,000 people, Grade 1A or 1B standards typically apply.
Plants of this scale in China are generally required to achieve secondary or tertiary treatment with biological nutrient removal to meet Grade 1A or 1B discharge standards, ensuring protection of receiving water bodies.
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