水文水质条件对河段纳污能力的影响——以乌东德库尾攀枝花河段为例

吴比; 李云成; 樊皓; 王孟; 李斐; 肖洋; 李亚俊

doi:10.11988/ckyyb.20230298

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长江科学院院报 ›› 2024, Vol. 41 ›› Issue (7) : 64-71. DOI: 10.11988/ckyyb.20230298

水环境与水生态

水文水质条件对河段纳污能力的影响——以乌东德库尾攀枝花河段为例

吴比¹, 李云成², 樊皓¹, 王孟¹, 李斐¹, 肖洋¹, 李亚俊¹

作者信息 +

Influence of Hydrological and Water Quality Conditions on Pollution Bearing Capacity of Rivers: A Case Study on Panzhihua Reach of Wudongde Reservoir Tail

WU Bi¹, LI Yun-cheng², FAN Hao¹, WANG Meng¹, LI Fei¹, XIAO Yang¹, LI Ya-jun¹

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摘要

定量分析水文水质条件变化下河段纳污能力变化,对于流域或区域水资源保护和水污染防治具有显著现实意义。以金沙江乌东德库尾攀枝花市三堆子—拉鲊河段为研究对象,探究水文水质条件变化对研究河段氨氮纳污能力的影响。结果表明,三堆子断面流量介于900~2 000 m³/s、氨氮浓度介于0.10~0.50 mg/L时,研究河段氨氮纳污能力介于235.12~4 670.38 t/a,三堆子断面流量和氨氮浓度变化与河段氨氮纳污能力变化基本呈线性相关关系。三堆子断面流量和氨氮浓度较小时,综合纳污能力变化介于0.86~64.23 t/a,水文要素流量占主导作用;流量和氨氮浓度较大时,综合纳污能力变化介于-105.34~-1.84 t/a,水质要素氨氮浓度占主导作用。研究成果可为流域或区域水资源保护和水污染防治提供对策措施和参考依据。

Abstract

Quantitatively analyzing changes in the pollution bearing capacity of rivers under varying hydrological and water quality conditions holds significant practical importance for water resource protection and pollution control within a basin or region. This study focuses on the Sanduizi-Lazha section of Panzhihua City, located at the tail of the Wudongde Reservoir on the Jinsha River. We examined the impact of hydrological and water quality conditions on ammonia nitrogen bearing capacity of the river reach. Results indicate that when the flow rate at Sanduizi section ranges from 900 to 2 000m³/s, and ammonia nitrogen concentrations range from 0.10 to 0.50 mg/L, the ammonia nitrogen bearing capacity in this section varies from 235.12 to 4 670.38 t/a. Changes in flow rate and ammonia nitrogen concentration in the Sanduizi section show a linear correlation with ammonia nitrogen bearing capacity. Specifically, under low flow rates and ammonia nitrogen concentrations, the comprehensive variation in ammonia nitrogen bearing capacity ranges from 0.86 to 64.23 t/a, with hydrological factors predominantly influencing these changes. Conversely, under high flow rates and ammonia nitrogen concentrations, the comprehensive variation ranges from -105.34 to -1.84 t/a, with water quality factors primarily driving these variations. These findings offer insights and guidance for water resource protection and pollution control strategies within river basins or regions.

导出引用

吴比, 李云成, 樊皓, 王孟, 李斐, 肖洋, 李亚俊. 水文水质条件对河段纳污能力的影响——以乌东德库尾攀枝花河段为例[J]. 长江科学院院报. 2024, 41(7): 64-71 https://doi.org/10.11988/ckyyb.20230298

WU Bi, LI Yun-cheng, FAN Hao, WANG Meng, LI Fei, XIAO Yang, LI Ya-jun. Influence of Hydrological and Water Quality Conditions on Pollution Bearing Capacity of Rivers: A Case Study on Panzhihua Reach of Wudongde Reservoir Tail[J]. Journal of Changjiang River Scientific Research Institute. 2024, 41(7): 64-71 https://doi.org/10.11988/ckyyb.20230298

中图分类号： TV213

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