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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Development of composite radial filter for recharging aquifers with canal water
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Development of composite radial filter for recharging aquifers with canal water

机译：用运河水再充电含水层的复合径向滤波器的开发

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摘要

A laboratory scale model of composite radial filter was designed, fabricated and tested for recharging aquifer with canal water. Charcoal (C), coarse sand (CS) and gravel (G) filter materials were placed in annular rings of developed radial filter in different combination of thickness, viz. 1 : 1 : 1, 1 : 1 : 2, 1 : 2 : 2 and 1 : 2 : 1 for four treatments T-1, T-2, T-3 and T-4 respectively. Flow equation for discharge through composite radial filter was developed and verified through experiments. The design depth of the filter for given discharge was also obtained. Sodium hypochlorite solution was injected through chlorination unit at the outlet of the radial filter to remove the bacteriological contamination of filtered water. The performance of composite radial filter was evaluated by analyzing canal water before and after filtration. Water quality parameters of filtered water were found to be within permissible limit at low flow rate (0.3 lps). The water quality parameters of filtered water from treatment T3 with thickness of 10, 20 and 20 cm for C, CS and G respectively was found to be comparatively better than other three treatments (T-1, T-2 and T-4). The composite radial filter consists of C, CS and G filter media having thickness in ratio of 1 : 2 : 2 was found to be the best for recharging groundwater aquifer with canal water.
机译：设计，制造和测试了复合径向滤波器的实验室规模模型，用于用运河水进行充电含水层。木炭（C），粗砂（CS）和砾石（G）过滤材料置于开发的径向过滤器的环形环中，厚度，厚度的厚度，viz。 1：1：1,1：1：2，1：2：2和1：2：1分别用于T-1，T-2，T-3和T-4。通过实验开发并验证了通过复合径向滤波器放电的流动方程。还获得了给定放电的过滤器的设计深度。通过在径向过滤器的出口处通过氯化单元注入次氯酸钠溶液以除去过滤水的细菌污染。通过在过滤之前和之后分析管水来评价复合径向过滤器的性能。发现过滤水的水质参数处于低流速（0.3LPS）的允许极限范围内。发现过滤水的水质参数分别从10,20厘米的厚度为10,20厘米，Cs和G的水质参数比其他三种处理（T-1，T-2和T-4）相对较好。复合径向过滤器由C，Cs和G过滤介质组成，厚度为1：2：2的厚度是最适合用管水充电地下水含水层的最佳选择。

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