| 基于MIKE11模型提高污染河流水质改善效果的方法 |
| 摘要点击 1679 全文点击 536 投稿时间：2017-03-29 修订日期：2017-06-09 |
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| 中文关键词 MIKE11模型 补水 水质改善 污染河流 方法 |
| 英文关键词 MIKE11 model replenishment water quality improvement polluted rivers method |
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| 中文摘要 |
| 为寻求提高污染河流水质改善效果的方法，本研究选择中国多坝闸重污染河流颍河为研究对象，针对引江济淮工程颍河段的水质改善要求，以颍河主要的污染物高锰酸盐指数、氨氮为指标，提出了应用MIKE11建立试验河流一维河网水动力和水质模型，采用数值模拟的方法，试验研究河流水质改善的最优技术方法，模拟试验主要进行了补水流量、补水水质、补水位置和补水方式等措施对改善颍河水质效果的影响.模拟结果表明：用MIKE11模型中水动力模块（HD）和对流扩散模块（AD）并结合降雨径流模块（NAM）来进行污染河流水质改善是可行的，即补水流量为河流本底流量的10%，分别对补水点1采用Ⅲ类水，补水点2和补水点3采用Ⅳ类水进行补给，补给效果最佳，高锰酸盐指数和氨氮的去除率分别为72.3%和55.7%，使研究区颍河85%以上的河段达到Ⅳ类水水质标准，为河流污染控制提供了一种新方法. |
| 英文摘要 |
| In order to seek ways to improve the quality of polluted rivers, this study selected the heavily polluted Yinghe River in China for study, as there is a requirement to improve water quality from the Yangtze River to the Yinghe River. The permanganate index and ammonia nitrogen are the main pollutant targets for the Yinghe River. This study applies MIKE11 to set up a one-dimensional model of the hydrodynamics and water quality using a numerical simulation method to determine the optimal method for river water quality improvement. The simulation experiment tests the influence of factors, such as the supplementary water flow, replenishment water quality, water replenishment position, and method of water supply to improve the water quality. The simulation results indicate that water quality improvement can be simulated with the hydrodynamic module (HD) and the convective diffusion module (AD) combined with the rainfall runoff module (NAM) in the MIKE11 model. In practice, the option with the best replenishment effect is to use class Ⅲ at point 1 and to use class Ⅳ at points 2 and 3 when the supplementary water flow rate is 10% of the river bottom flow. The reduction in permanganate index and ammonia nitrogen was, respectively, 72.3% and 55.7%, and over 85% of the study area reached the standard of class Ⅳ water quality. This provides a new method for river pollution control. |
