Xinjiang Uygur Wastewater Treatment Plant, Hotan, Xinjiang, China

The Xinjiang Uygur wastewater treatment plant is located in Yiliqi Township, Hotan City (Khotan), within the Hotan Prefecture of the Xinjiang Uygur Autonomous Region, China. The facility serves an estimated population of 97,000, placing it in the medium-to-large agglomeration category for the region. As a municipal plant in China, it is subject to the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002), which sets effluent limits based on the receiving water body's sensitivity. For inland plants like this one, Grade 1-A or 1-B standards typically apply, requiring biological treatment with nutrient removal. Regulatory compliance would necessitate secondary treatment at minimum. The plant discharges into the local watershed, likely the Hotan River or its tributaries, which flow into the Tarim Basin, an endorheic basin in arid Xinjiang. The Tarim River system supports fragile desert ecosystems and is critical for irrigation and groundwater recharge in the region. Downstream, the water eventually reaches the Taklamakan Desert, where evaporation dominates, making effluent quality crucial for preventing salinization and protecting sparse riparian habitats.

The plant's receiving water body is part of the Hotan River system, which drains into the Tarim Basin, China's largest endorheic basin. The Tarim River is a vital water source for the arid region, supporting riparian forests and agricultural oases. Downstream, the water dissipates in the Taklamakan Desert, where high evaporation rates concentrate pollutants. Protecting this fragile ecosystem requires effective treatment to prevent salinization and contamination of groundwater used by local communities.