Overview
Yunnan wastewater treatment plant serves Pu'er City, Yunnan Province, China, with a population of 466,900. The facility operates under China's national wastewater standards.
The Yunnan wastewater treatment plant is located in Pu'er City, Yunnan Province, China, serving a population of approximately 466,900. It is situated in the Simao District, a key urban area within the region. As a large-scale municipal facility, it plays a vital role in managing wastewater from residential and commercial sources in Pu'er. Under China's national wastewater discharge standards (GB 18918-2002), plants serving populations over 100,000 are typically required to achieve at least secondary treatment with nutrient removal. The regulatory framework ensures that facilities of this scale meet stringent effluent quality requirements to protect receiving waters. The plant discharges into local water bodies that eventually drain into the Mekong River basin, one of Southeast Asia's major river systems. The downstream environment includes ecologically sensitive areas that support diverse aquatic life and provide water resources for communities in Yunnan and downstream countries. Proper treatment is essential to prevent nutrient pollution and maintain water quality in this transboundary watershed.
Environmental context
The plant's treated effluent flows into tributaries of the Mekong River, which originates in the Tibetan Plateau and traverses Yunnan before entering Myanmar, Laos, Thailand, Cambodia, and Vietnam. This river system supports rich biodiversity, including endangered fish species and extensive wetlands. The region's mountainous terrain and seasonal monsoon climate influence runoff patterns, making consistent wastewater treatment critical to prevent algal blooms and protect downstream ecosystems.
Frequently asked questions
The plant is located in Pu'er City, Yunnan Province, China, specifically in the Simao District of Simao Town.
The plant serves approximately 466,900 people, making it a large-scale municipal facility.
The plant discharges into local tributaries that flow into the Mekong River, a major transboundary river in Southeast Asia. It helps protect downstream ecosystems in Yunnan and beyond.
The plant operates under China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002), which sets limits on pollutants like COD, BOD, nitrogen, and phosphorus.
For large agglomerations over 100,000 people, Chinese regulations typically require secondary treatment with nutrient removal (Class 1A or 1B standards) to protect sensitive water bodies.
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