Evaluation of drainage water quality for irrigation reuse in Kulfo and Hare irrigation command areas, southern Ethiopia

IF 1.6 Q3 WATER RESOURCES
Edmealem Temesgen, Guchie Gulie, Destaw Akili
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Abstract

Abstract Water from agricultural drainage systems can be reused when its quality is good or blended with irrigation canal water to overcome the water shortage. The primary goal of this research was to determine the quality of surface drainage water in the Kulifo and Hare irrigation projects for irrigation reuse. Water quality was evaluated in situ and in the laboratory during the irrigation season of 2022. Turbidity, TDS, pH, EC, and DO were analyzed in the field using an Aqua meter. Fifty-seven water samples were collected and analyzed for the major cation (Na+, Ca2+, K+, and Mg2+) and anion (HCO3−, CO32−, Cl−, and SO42−). The result of the drainage water quality index study, according to the water quality index for irrigation purpose reuse, ranged from 47.84 to 84.89. This indicated that the suitability of drainage water reuse for irrigation purposes was categorized as ‘poor to very poor,’ except in Shara community-managed farms. Therefore, to avoid the impact on soil quality for crop production due to the hazard of poor agricultural drainage water for irrigation reuse in the study area, it needs to be treated before being reused for irrigation purposes, except at the Shara irrigation community-managed farm.
埃塞俄比亚南部库尔福和黑尔灌溉指挥区用于灌溉再利用的排水水质评价
农业排水系统的水在水质良好的情况下可以回用或与灌溉渠水混合,以克服水资源短缺的问题。本研究的主要目的是确定Kulifo和Hare灌溉项目地表水的质量,以供灌溉再利用。在2022年灌溉季节,在现场和实验室对水质进行了评估。浊度、TDS、pH、EC和DO在现场使用Aqua计进行分析。收集了57个水样,分析了主要阳离子(Na+、Ca2+、K+和Mg2+)和阴离子(HCO3−、CO32−、Cl−和SO42−)。排水水质指数研究结果表明,按灌溉回用水质指数计算,排水水质指数范围为47.84 ~ 84.89。这表明,除Shara社区管理的农场外,用于灌溉目的的排水回用的适宜性被归类为“差到非常差”。因此,除了Shara灌溉社区管理农场外,为了避免研究区农业排水不良对作物生产土壤质量的影响,需要对其进行处理后再用于灌溉目的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
2.30
自引率
6.20%
发文量
136
审稿时长
14 weeks
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