| Cite this article: | 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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| 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; |
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