目的将快滤池的传统滤层改造为均粒石英砂滤层,为的是改善滤池的工作性能,提高产水量。
In order to improve the operating performance of filter tank and propose the high production water volume, the traditional filter media was replaced by homogeneous particle quartz sand.
分析原因:工艺改造时所选的锰砂有部分粒径不符合要求,导致级配不合理,造成滤层结构部分混乱;
One of reasons for it is that graduation of manganese sand is not rational, which leads to partial confusion of filter layer construction.
本文在回顾了滤层保砂性设计的几种方法后,提出了广级配砂砾滤层保砂性的设计计算式。
After reviewing a few design methods of sand gravel filters, a new design method of filter using broad graded materials is proposed in the paper.
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