| 引用本文: | 逯林方,王辉辉,胡亚伟,等.赵口引黄灌区二期工程区域地表水水质评价[J].灌溉排水学报,2022,41(9):117-124. |
| LU Linfang,WANG Huihui,HU Yawei,et al.赵口引黄灌区二期工程区域地表水水质评价[J].灌溉排水学报,2022,41(9):117-124. |
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| 摘要: |
| 【目的】研究赵口引黄灌区二期工程建设期间区域地表水环境质量状况。【方法】分别于2020年11月和2021年1、3、5月对灌区内涡河、惠济河河段21个监测点位进行调查分析，并采用单因子评价法、综合污染指数法和综合水质标识指数法3种方法相结合，对灌区地表水水质进行全面评价。【结果】灌区地表水总氮和总磷超标严重，是最主要的2种污染物，导致单因子评价法的评价结果较差。2020年11月—次年3月V类及劣V类水质占比均超过95%，只有在5月整体达到IV类水质；综合污染指数法评价结果显示，2020年11月—次年5月水质从轻度污染向清洁状态改善，且存在一定的空间分布规律；综合水质标识指数法评价结果中，4个月水质整体满足IV类水质标准。【结论】当前赵口引黄灌区二期工程区域地表水水质不容乐观，特别是枯水期水质较差，总氮和总磷是主要的污染指标，开展农业面源污染治理是改善灌区地表水水质的重要途径。 |
| 关键词: 灌区；水质评价；单因子评价法；综合污染指数法；综合水质标识指数法 |
| DOI：10.13522/j.cnki.ggps.2022067 |
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| Surface Water Quality in Second-phase Zhaokou Yellow River Irrigation District Project |
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LU Linfang, WANG Huihui, HU Yawei, JIN Xiaohui
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1. Construction Administration of the Second Phase Project of Zhaokou Yellow River Irrigation District in Henan Province,
Kaifeng 475000, China; 2. Yellow River Institute of Hydraulic Research, Zhengzhou 450003, China;
3. Henan Province Rural Water Environment Management Engineering Technology Research Center, Zhengzhou 450003, China
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| Abstract: |
| 【Objective】The irrigation district at Zhaokou in east Henan province is a project to provide the Yellow River water for irrigation and industrial usage in this region. It is constructed in several phases. The purpose of this paper is to analyze the quality of the water after the second-phase of the project was completed.【Method】Water samples were taken from the sections of Guo River and Huiji River in November 2020, January, March, and May 2021 at 21 locations. Their chemical components were analyzed. The pollution index used to evaluate the water quality was calculated using single factor evaluation method, comprehensive pollution index method, and comprehensive water quality labeling index method. 【Result】 The total nitrogen (TN) and total phosphorus (TP) in the water exceeded the standard substantially. From November 2020 to March 2021, water with quality at the Grade V or lower accounted for more than 95%, while in May 2021, the quality of all water reached Grade IV. The results calculated from the comprehensive pollution index method showed that from November 2020 to May 2021, water quality improved from moderate pollution to least or no pollution. It was also found the water quality varied spatially. The results calculated from the comprehensive water quality labeling index method showed that water quality from November 2020 to May 2021 reached Grade IV, the demand for irrigation water quality. 【Conclusion】The quality of surface water in the second-phase Zhaokou Yellow River Irrigation District project is not optimistic, especially in the dry season. Its TN and TP are the main pollutants. Alleviating non-point source pollution from cropping fields is an important way to improve the water quality. |
| Key words: irrigation area; water quality evaluation; single factor evaluation method; comprehensive pollution index method; comprehensive water quality labeling index method |
