反冲洗是保持滤床清洁的方法之一。
Backwashing is one of the methods to maintain a filter bed clean.
滤膜在天然滤床渗流井滤净水中具有重要作用。
The filter film plays an important role in water purification in seepaging well with natural filter bed.
氮源对于气相生物滴滤床的净化效果有显著的影响。
The nitrogen source's effects on the purification performance of air phase trickling biofilter are significant.
滤速越低，有机物与滤床接触时间越长，去除效果越好。
With the slower filter speed, the time that organic matter touches the filter bed longer, the removing effect is better.
应用生物滤床工艺，对炼油厂含硫恶臭废气进行了现场小型侧流试验研究并取得成功。
Onsite bench test of refinery odor sulf-gas treatment has been successfully carried out with bio-filter process.
研究了造粒粉煤灰的磷吸附特征，以及采用造粒粉煤灰为填料的滤床对实际景观水的磷去除效果。
The adsorption characteristics of phosphorus onto granular fly ash and its phosphorus adsorption ability as the material in filter bed for landscape water treatment were investigated.
还进行了为期21天的连续过滤试验，发现滤床在高水力负荷条件下能持续地去除景观水中的磷。
In column experiment during 21 days, it was observed that the granulated fly ash could continuously remove the phosphorus under high hydraulic loading rate.
从对藻毒素和微量有机污染物的去除方面考察了水生植物滤床（HFB）在改善源水水质方面的效果。
The functions of the hydrophyte filter bed(HFB) for improving source water quality were surveyed in terms of microcystin and trace organic pollutants.
结果表明，在废水进滤床前，加入5 %的粉煤灰可提高设施的废水处理能力，并且可降低运行费用。
The results showed that adding 5% dose of fly ash when feeding wastewater into the filter bed, wastewater treatment capability of facility can be improved, and the operating cost can reduce also.
提出了滤床的结构特征、河水水质、水动力条件及取水工艺是影响淤塞的主要因素，总结了防治淤塞的建议。
It puts forward some main factors that influences the silt, which are structure characteristics of the filter bed, water quality of river, the condition of water force and the technology...
结合石英砂滤床模型试验，研究了石英砂滤床的除酚效果与机理，提出了相关数学模型，并通过工程实例进行了验证。
By the experiment on quartz sand filter, the effect and mechanism of phenol removal were studied. A related mathematical model was presented and demonstrated by a project case.
不同滤层厚度、滤速和加药比ALT等条件下的过滤试验结果表明：滤层中单元滤床的特征尺寸的变化仅与空隙率有关。
The experiment reveals that the variation of UFE numbers is only dependent on the volume-specific deposit of filter, the effects of filtration velocity, bed depth and ALT ratio are not evident.
系每一种渗滤冲煮方法（滴滤、虹吸等）中，用过既咖啡粉床既形状是判断水流既均匀性既一个重要参考物。
In every percolation brewing method (drip, siphon, etc. ) the shape of the spent coffee bed is a significant indicatorof the uniformityof flow during the drawdown.
用FA型可视式中压砂床滤失仪对聚丙烯酰胺和棉纤维复合堵漏剂进行了室内试验研究。
Laboratory experiments were done on the evaluation of a composite lost circulation material (LCM) prepared by Polyacrylamide and cotton fibers on a FA Model Filter tester.
用FA型可视式中压砂床滤失仪对聚丙烯酰胺和棉纤维复合堵漏剂进行了室内试验研究。
Laboratory experiments were done on the evaluation of a composite lost circulation material (LCM) prepared by Polyacrylamide and cotton fibers on a FA Model Filter tester.
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