摘要
提出了均匀粒径的陶粒和均匀粒径的无烟煤滤料，组成均粒混合滤料滤床，形成一种反粒度过滤，使整个滤床的截污作用都得到了充分发挥。
In order to overcome the shortage of the granular materials in the traditional fil-ter of one laver,double layers and three layers which gradually increase in the diameter from theabove downwards,in order to overcome the shortage of the filter bed which doesn’t intercept sludgesolids uniformly,and in order to overcome shortage of the loss of head which increases rapidly,thispaper presents the filter bed which consists of mixed procelains and hard coals with uniform diameterso that a kind of the filtration against the partlcles is formed.In this way the function of the wholefilter bed's intercepting sltidge solids is fully developed and the filter bed has an advantage of thelong filter run with an adequate quantity of water.
关键词
均粒滤料
混合滤料
水过滤
截污
水处理
uniform granular filter-media,mixed filter-media,water filtration
