负荷历时曲线法在梁子湖流域污染容量总量控制中的应用

发布时间：2018-06-01 04:27

本文选题：总量控制 + 负荷历时曲线法　；参考：《长江流域资源与环境》2016年05期

【摘要】：采用负荷历时曲线法(LDC),基于水质保护目标,研究水体纳污能力,确定最大日负荷总量(TMDL)是当前流域污染总量控制的主要方法之一。根据梁子湖高桥河流域控制断面2008~2011年的水文、水质数据,以主要污染物COD为指标,将负荷历史曲线法运用到梁子湖高桥河等子流域污染容量总量控制中,对该流域的最大日负荷(TMDL)变化规律进行分析,提出流域不同水文条件下的污染负荷消减量。研究结果表明:梁子湖水环境受面源污染影响较大。高桥河、徐家港、张家桥港、山坡港、宁港流域,在高流量期实际负荷值均已超出了允许负荷,其削减量分别为61.36、4.33、12.98、3.84、7.13 t/d;徐家港和宁港流域在丰水期实际负荷值也超出了允许负荷,削减量分别为0.16、0.17 t/d。该研究为流域相关管理部门对湖泊水环境的污染控制提供可靠的决策依据。
[Abstract]:Based on the objective of water quality protection, the method of load duration curve is used to study the capacity of water body to absorb pollution, and to determine the maximum daily load total quantity (TMDL), which is one of the main methods of total pollution control in river basin at present. According to the hydrological and water quality data of the control section of the Gaoqiao River Basin in Liangzi Lake from 2008 to 2011, the load history curve method was applied to the total pollution capacity control in the Gaoqiao River Basin of Liangzi Lake based on the main pollutant COD as the index. The variation law of maximum daily load (TMDL) in this basin is analyzed, and the pollution load abatement under different hydrological conditions is put forward. The results show that the water environment of Liangzi Lake is greatly affected by non-point source pollution. The actual load values of Gaoqiao River, Xujiagang, Zhangjiaqiao Port, hillside Port and Ninggang Watershed have exceeded the allowable load during the period of high discharge, and their reduction amounts are respectively 61.36 / 6 / 4.33 / 12.983.83.84 / d and 7.13 t / d respectively. The actual load values of Xujiagang and Ninggang Watershed also exceeded the allowable load in the high water period. The reductions were 0.16 t / d 0.17 t / d, respectively. The study provides a reliable decision basis for the pollution control of lake water environment by relevant management departments.
【作者单位】：武汉大学资源与环境科学学院;浙江贵仁信息科技股份有限公司;
【基金】：“十二五”水专项三峡库区及上游流域水环境风险评估与预警技术研究与示范课题(2013ZX07503-001-01)~~
【分类号】：X52

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