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    多介质过滤器对于水质过滤的要求
    来源: 发布时间:2020-06-16

    多介质过滤器是利用一种或几种过滤介质,在一定的压力下把浊度较高的水通过一定厚度的粒状或非粒材料,从而有效的除去悬浮杂质使水澄清的过程,常用的滤料有石英砂,无烟煤,锰砂等,主要用于水处理除浊,软化水,纯水的前级预处理等,出水浊度可达3度以下。
    Multi media filter is a process of using one or several kinds of filter media to pass the water with high turbidity through the granular or non granular materials with certain thickness under certain pressure, so as to effectively remove the suspended impurities and make the water clear. The commonly used filter materials are quartz sand, anthracite, manganese sand, etc., which are mainly used for water treatment and turbidity removal, softened water, pre-treatment of pure water, etc., and the turbidity of the effluent can reach 3 degrees following.
    在水处理上使用的多介质过滤器,常见的有:无烟煤-石英砂-磁铁矿过滤器,活性炭-石英砂-磁铁矿过滤器,活性炭-石英砂过滤器,石英砂-陶瓷过滤器等。
    The common multi-media filters used in water treatment are: Anthracite quartz sand magnetite filter, activated carbon quartz sand magnetite filter, activated carbon quartz sand filter, quartz sand ceramic filter, etc.
    多介质过滤器的滤层设计,主要考虑的因素为:
    The main factors to be considered in the design of filter layer of multi-media filter are:
    1、不同滤料具有较大的密度差,保证反洗扰动后不会发生混层现象。
    1. Different filter materials have large density difference to ensure that there is no mixing phenomenon after backwashing disturbance.
    2、根据产水用途选择滤料。

    山东多介质过滤器
    2. Select filter material according to the purpose of water production.
    3、粒径要求下层滤料粒径小于上层滤料粒径,以保证下层滤料的有效性和充分利用。
    3. The particle size of the lower filter material is required to be smaller than that of the upper filter material to ensure the effectiveness and full utilization of the lower filter material.
    事实上,以三层滤床为例,上层滤料粒径 大,有密度小的轻质滤料组成,如无烟煤、活性炭;中层滤料粒径居中,密度居中,一般为石英砂组成;下层滤料由粒径 小,密度 大的重质滤料组成,如磁铁矿。由于密度差的限制,三层介质过滤器的滤料选择基本上是固定的。上层滤料起粗滤作用,下层滤料起精滤作用,这样就充分发挥了多介质滤床的作用,出水水质明显好于单层滤料的滤床。
    In fact, taking three-layer filter bed as an example, the upper filter material is composed of light filter material with large particle size and small density, such as anthracite and activated carbon; the middle filter material is composed of quartz sand with medium particle size and medium density; the lower filter material is composed of heavy filter material with small particle size and large density, such as magnetite. Due to the limitation of density difference, the selection of filter material for three-layer media filter is basically fixed. The upper filter material plays a role of coarse filtration, and the lower filter material plays a role of fine filtration, so that the multi-media filter bed is fully played, and the water quality of the effluent is obviously better than that of the single-layer filter bed.
    而对于饮用水,一般禁止使用无烟煤,树脂等滤料。
    For drinking water, it is generally prohibited to use anthracite, resin and other filter materials.

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