| 引用本文: | 张文正,蔡九茂,吕谋超,等.砂石过滤器过滤效果影响因素试验研究[J].灌溉排水学报,2020,39(7):77-83. |
| ,et al.砂石过滤器过滤效果影响因素试验研究[J].灌溉排水学报,2020,39(7):77-83. |
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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、原水含沙量、过滤速度，对比过滤后水样浊度、颗粒质量浓度、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，原水含沙量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60 cm条件下水样颗粒质量浓度与其滤层他厚度差异显著，原水含沙量0.8‰条件下水样颗粒质量浓度与其他原水含沙量差异显著，而过滤速度对颗粒质量浓度影响同样较弱。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，不同原水含沙量条件下水头损失差异显著。【结论】滤层厚度、原水含沙量对水样浊度、颗粒质量浓度影响显著，过滤速度影响较弱；过滤速度、原水含沙量对水头损失影响显著，滤层厚度影响较弱。 |
| 关键词: 过滤器；滤层厚度；过滤速度；浊度；颗粒质量浓度；水头损失 |
| DOI：10.13522/j.cnki.ggps.2019354 |
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| Experimental Study on Influencing Factors of Filtration Effect of Sand Filter |
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ZHANG Wenzheng, CAI Jiumao, LYU Mouchao, ZHAI Guoliang
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1.Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China)2. Key Laboratory of Water-saving Irrigation Engineering, Ministry of Agriculture and Rural Affairs, Xinxiang 453002, China
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| Abstract: |
| 【Objective】This paper is to study the effect 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 sand concentration of raw water and the filtration speed, and the turbidity, particle content and head loss of the filtered water samples were measured. 【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 sand concentration of raw water 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 content of water sample under the condition of filter layer thickness 60 cm was significantly different from other thicknesses. The water sample particle content was significantly different from other sand concentration of raw water under the condition of sand concentration of raw water of 0.8‰, and the filtration rate had the weak effect on the particle content. 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 sand concentration of raw water 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 content of the water samples, and the effect of the filtration rate is weak. The filtration rate and the sand concentration of raw water have a significant effect on the head loss, and the effect of filter thickness is weak. |
| Key words: filter; filter layer thickness; filtration rate; turbidity; particle concentration; head loss |
