• 关键词："引黄入呼"取水口  水环境容量  水动力  水质  动态性评估

• 基金项目：内蒙古自治区科技计划项目（No.20130427）；国家自然科学基金（No.51169018，51369021）；国家水体污染控制与治理科技重大专项（No.2014ZX07503-004-02）

• 冯利忠
• 内蒙古农业大学水利与土木建筑工程学院, 呼和浩特 010018

• 裴国霞
• 内蒙古农业大学水利与土木建筑工程学院, 呼和浩特 010018

• 吕欣格
• 内蒙古自治区环境科学研究院, 呼和浩特 010010

• 张琨
• 内蒙古自治区环境科学研究院, 呼和浩特 010010

• 王超
• 内蒙古自治区环境科学研究院, 呼和浩特 010010

• 萌来
• 内蒙古自治区环境科学研究院, 呼和浩特 010010

• 摘要：针对黄河呼和浩特段沿线水体持续污染为“引黄入呼”取水口带来的水环境质量问题，采用MIKE三维水动力和水质耦合模型，进行了“引黄入呼”取水口水环境容量动态性研究，这对取水口水安全与上游排污能力协调、稳定推进呼和浩特市饮用水的健康运行具有重要意义.结果表明：按照90%供水保证率进行计算，黄河呼和浩特段“引黄入呼”取水口处可以满足“引黄入呼”取水需求，流量剩余量在结冰枯水期可达5250%，丰水期可达42500%；黄河呼和浩特段“引黄入呼”取水口处DO、NH₄⁺-N、NO₃^-、BOD、TP、FC、COD均可满足《地表水环境质量标准》（GB3838-2002）Ⅲ类标准中的相关限值，整体水体状况良好，都具有一定的容量，NH₄⁺-N、NO₃^-、BOD、TP、FC剩余容量较大，COD容量较小但DO容量较大，经分析，目前没有富营养化、藻类大量繁殖等不良趋势发生，短时间内容量较为稳定；DO、NO₃^-、FC、TP水环境容量通年较为平稳，分别在1.97 mg·L^-1、6.25 mg·L^-1、9327 个·g^-1、0.12 mg·L^-1附近波动；NH₄⁺-N、BOD、COD最小水环境容量分别出现在4月（0.27 mg·L^-1）、9月（0.70 mg·L^-1）、6月（0.20 mg·L^-1），最大水环境容量均出现在7月，分别为0.72、2.80、7.57 mg·L^-1.

• Abstract：The Yellow River at Huhhot has suffered from continuous pollution and water resource shortage is critical to the water quality and water intake feasibility of the water diversion project from the Yellow River to Huhhot. This paper studies the water environment capacity of the intake of the water diversion project from the Yellow River to Huhhot using MIKE 3D water quality model coupled with hydrodynamics, which has great significance to drinking water safety, upstream pollutant discharge capacity coordination and the promotion of healthy drinking water in Hohhot. The result shows that: the water supply of the water diversion project from the Yellow River to Huhhot could meet the water demand if the probability of water supply is 90%. The remaining water flow capacity is 5250% during low flow period and 42500% during high flow period.The concentration of main water pollutant such as DO、NH₄⁺-N、NO₃^-、BOD、TP、FC and COD of the intake of the water diversion project from the Yellow River to Huhhot are below the third level limit of the Environmental quality standards for surface water (GB3838-2002). The water environment capacity of DO,NO₃^-,FC,TP is relatively stable throughout the year, which are 1.97 mg·L^-1, 6.25 mg·L^-1, 9327 ind.·g^-1 and 0.12 mg·L^-1. The minimum water environmtent capacity of NH₄⁺-N、BOD、COD are 0.27 mg·L^-1 (April)、0.70 mg·L^-1 (September) and 0.20 mg·L^-1 (June). The maximum water environmtental capacity of NH₄⁺-N、BOD、COD all appear in July, which are 0.72, 2.80 and 7.57 mg·L^-1. Overall, the remaining water flow capacity of NH₄⁺-N、NO₃^-、BOD、TP、FC and DO is relatively high, while the remaining water flow capacity of COD is relatively low. There's no evidence that the negative trend such as eutrophication and algal bloom are likely to take palce, and the water environmtental capacity is relatively stable in a short term.

• Key words：the intake of the water diversion project from the Yellow River to Huhhot  water environmtental capacity  hydrodynamics  water quality  dynamic assessment

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