斯里兰卡Kelani河流域上下游流域水质评价

IF 1.6 Q3 WATER RESOURCES Water Practice and Technology Pub Date : 2023-03-09 DOI:10.2166/wpt.2023.034
Chandima J Narangoda, Deeptha Amarathunga, C. Dangalle
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引用次数: 1

摘要

Kelani河是科伦坡地区80%人口的主要饮用水源,也是斯里兰卡淡水鱼类生物群的重要生态系统复合体。然而,它是这个国家污染最严重的河流。本研究旨在确定河流上下游集水区的水质参数和污染,并选择最适合预测每个集水区污染的参数。每个集水区选择了13个地点进行研究,并通过标准技术记录了14个水质参数。将测量值与饮用目的和水生生物允许的标准值进行比较,并进行主成分分析。研究表明,克拉尼河污染最严重的流域是下游流域,选择化学需氧量(COD)和水pH值作为预测下游流域污染水平的最合适参数。选择硝酸盐浓度和COD作为最适合预测上游流域污染的水质参数。本研究表明,与20年前的研究相比,克拉尼河的水污染呈加速趋势。
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Evaluation of water quality in the upper and lower catchments of the Kelani River Basin, Sri Lanka
Kelani River is the principal consumable water source for 80% of the population in the Colombo district and an important ecosystem complex for the freshwater fish biota of Sri Lanka. However, it is the most polluted river in the country. The present study was conducted to determine the water quality parameters and pollution of the upper and lower catchments of the river and select the most suitable parameters for predicting the pollution of each catchment. Thirteen locations of each catchment were selected for the study, and 14 water quality parameters were recorded by standard techniques. Measurements were compared with the standard values permissible for drinking purposes and aquatic life and subjected to principal component analysis. The study revealed that the most polluted catchment of the Kelani River was the lower catchment, and the chemical oxygen demand (COD) and water pH were selected as the most suitable parameters to predict the pollution levels of the lower catchment. The nitrate concentration and COD were selected as the most suitable water quality parameters to predict the pollution of the upper catchment. The present study indicates an accelerating trend in water pollution of the Kelani River when compared with studies conducted two decades ago.
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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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