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Chapter 10 Assessment of Groundwater Quality and Its Suitability for Domestic and Irrigation Use in the Coastal Zone of the Mekong Delta, Vietnam

机译:第十章越南湄公河三角洲沿岸地区地下水水质及其对家庭和灌溉用途的适宜性评估

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This study evaluated the suitability of groundwater quality for domestic use and irrigation in Vinh Chau District, Soc Trang Province, Vietnam. Water samples from 30 domestic-use and 10 irrigation groundwater wells were collected and their physico-chemical parameters were analyzed. Results indicated that, based on WHO and Vietnamese standards, the groundwater quality had good suitability, generally to the medium level, but for drinking purposes some areas were found to require water treatment. Six water quality parameters-sodium adsorption ratio, soluble sodium percentage, permeability index, sodium percentage, residual sodium carbonate, and magnesium adsorption ratio-were calculated and employed for evaluating suitability for irrigation, in addition to electric conductivity. The results showed that the six parameters stayed at the permissible level for irrigation, whereas high sodium and salinity were a concern for irrigation. Use of the Piper trilinear diagram to analyze hydrochemical facies and groundwater types showed that the groundwater samples were in the sodium-potassium-chloride-sulfate category and that sodium water type was dominant.
机译:这项研究评估了越南Soc Trang省Vinh Chau区地下水水质是否适合家庭使用和灌溉。收集了30户生活用水井和10口灌溉地下水井的水样,并对其理化参数进行了分析。结果表明,根据世界卫生组织和越南的标准,地下水水质总体上处于中等水平,具有良好的适用性,但出于饮用目的,发现某些地区需要进行水处理。除了电导率外,还计算了六个水质参数:钠吸附率,可溶性钠百分比,渗透率指数,钠百分比,残留碳酸钠和镁吸附率,并用于评估灌溉的适用性。结果表明,这六个参数保持在灌溉允许的水平,而高钠和盐分是灌溉的关注点。利用Piper三线性图分析水化学相和地下水类型表明,地下水样品属于氯化钠-钾-氯化钾-硫酸盐类,而钠水类型占主导。

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