| 引用本文: | 张文正,吕谋超,翟国亮,等.砂石过滤器过滤效果关键影响因素试验研究[J].灌溉排水学报,0,():-. |
| ZHANG Wenzheng,LV Mouchao,ZHAI Guoliang,et al.砂石过滤器过滤效果关键影响因素试验研究[J].灌溉排水学报,0,():-. |
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| 摘要: |
| 【目的】研究不同因素对砂石过滤器过滤效果的影响。【方法】本文开展室内过滤模型水力学试验,选择不同滤层厚度、原水浓度、过滤速度,对比过滤后水样浊度、颗粒含量、水头损失。【结果】随着滤层厚度的增加,过滤后水样浊度呈递减趋势,原水浓度的变化与过滤后水样浊度呈正相关,过滤速度的变化对浊度影响较弱。滤层厚度60cm条件下水样颗粒含量与其它厚度呈显著差异,原水浓度0.8‰条件下水样颗粒含量与其它原水浓度呈显著差异,而过滤速度对颗粒含量影响同样较弱。过滤速度与水头损失呈正相关,不同滤层厚度条件下水头损失差异不显著,不同原水浓度条件下水头损失差异显著。【结论】综合可知,滤层厚度、原水浓度对水样浊度、颗粒含量影响显著,过滤速度影响较弱；过滤速度、原水浓度对水头损失影响显著,滤层厚度影响较弱。 |
| 关键词: 砂石过滤器;滤层厚度;过滤速度;浊度;颗粒含量;水头损失 |
| DOI： |
| 分类号:S275.5 |
| 基金项目:中央级科研院所基本科研业务费专项FIRI2017-26 |
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| Experimental study on Sand Filter Filtration Effect of key influencing factor |
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ZHANG Wenzheng, LV Mouchao, ZHAI Guoliang, CAI Jiumao
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Farmland Irrigation Research Institute,Chinese Academy of Agricultural Sciences
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| Abstract: |
| 【Objective】In order to study the influence of different factors on the filtration effect of sand filter.【Method】the indoor filtration model hydraulic test was carried out, under different filter layer thickness, the raw water concentration and the filtration speed, we measured the turbidity, particle content and head loss of the filtered water samples. 【Result】The results showed that with the increase of the filter layer, the turbidity of the water sample after filtration showed a decreasing trend. The change of the raw water concentration was positively correlated with the turbidity of the filtered water sample, and the change of the filtration rate had a weak effect on the turbidity. The particle concentration of water sample was significantly different from other thicknesses under the condition of filter layer thickness 60cm. The water sample particle concentration was significantly different from other raw water concentration under the condition of raw water concentration of 0.8‰, and the filtration rate had the weak effect on the particle concentration. The filtration rate is positively correlated with the head loss. The difference of head loss is not significant under different filter layer thickness. The difference of head loss is significant under different raw water concentration conditions.【Conclusion】 It can be seen that the filter layer thickness and the concentration of raw water have significant effects on the turbidity and particle concentration of the water sample, and the influence of the filtration rate is weak. The filtration rate and the raw water concentration have a significant influence on the head loss, and the influence of filter layer thickness is weak. |
| Key words: sand filter;filter layer thickness;filtration rate;turbidity;particle concentration;head loss; |
