基于一维水动力水质模型的纳污能力分段核定研究——以江门市江海区礼乐河为例

Study on the Segment Validation of the Pollutant Receiving Capacity Based on One-Dimensional Hydrodynamic and Water Quality Model——A Case Study of Liyue River in Jianghai District in Jiangmen City

为了解区域河流的水环境承载能力,江门市江海区礼乐河建立了一维水动力水质模型,以COD和氨氮为控制指标,通过布置控制断面及排污口概化,采用模型试错方法分段核定了江海区礼乐河的纳污能力,并对水质目标协调性、核定成果应用等有关问题进行了探讨。结果表明,在协调好上下游河道水质管理目标的前提下,江海区礼乐河具有一定的纳污能力,该结果可在一定程度上指导江海区水污染整治工作的开展。

For realizing the water environmental bearing capacity, this paper establishes one dimensional hydrodynamic water quality model on Liyue River of Jianghai district of Jiangmen. By giving some control sections and generalizing sewage drain outlets, we valida- ted the pollutant receiving capacity of Liyue River with this model, taking COD and NH3 - N as pollution factors. In addition, the re- lated issues, such as coordination of water quality objectives and application of achievement, had been discussed. The results show that Liyue River contains certain pollutant receiving capacity under the premise of coordinating the water quality management objectives of the upper and lower rivers. This paper can be a guidance of water pollution control in Jianghai district to some extent.