Multi media filter is a process that uses one or several kinds of filter media to pass the water with high turbidity through a certain thickness of granular or non granular materials under a certain pressure, so as to effectively remove suspended impurities and make water clear. The commonly used filter materials include quartz sand, anthracite, manganese sand, etc., which are mainly used for water treatment, turbidity removal, softened water, pre-treatment of pure water, etc., and the turbidity of effluent can reach 3 degrees following.

过滤器构成

Filter composition

多介质过滤器主要由过滤器体、配套管线和阀门构成。

The multi-media filter is mainly composed of filter body, matching pipeline and valve.

其中过滤器体主要包括以下组件：简体；布水组件；支撑组件；反洗气管；滤料；排气阀(外置)等。

The filter body mainly includes the following components: cylinder; water distribution component; support component; backwashing gas pipe; filter material; exhaust valve (external), etc.

滤料的选择依据

Selection basis of filter material

(1)须有足够的机械强度，以免在反冲洗过程中很快地磨损和破碎；

(1) It must have enough mechanical strength to avoid rapid wear and breakage in the process of backwashing;

(2)化学稳定性要好；

(2) The chemical stability is good;

(3)不含有对人体健康有害及有毒物质，不含有对生产有害、影响生产的物质；

(3) It does not contain harmful and toxic substances to human health, and does not contain substances harmful to or affecting production;

(4)滤料的选择，应尽量采用吸附能力、截污能力大、产水量高、出水水质好的滤料。

(4) The selection of filter media should try to use the filter materials with high adsorption capacity, pollution interception capacity, high water yield and good effluent quality.

在滤料中，卵石主要是起支撑作用，在过滤工艺过程中，因其强度高，相互之间的间距缝隙稳定，孔隙大，便于正洗工序中，滤后水顺利通过；同样，反洗工序中，反洗水和反洗空气等能顺利通过。

In the filter material, pebbles mainly play a supporting role. In the process of filtration, due to its high strength, stable spacing, and large pores, it is convenient for the filtered water to pass smoothly in the forward washing process; similarly, in the backwashing process, the backwashing water and air can pass smoothly.

常规配置中，卵石分为四种规格，铺垫方式为自下而上先大后小。

In the conventional configuration, the pebbles are divided into four specifications, and the paving mode is from bottom to top, first large and then small.

滤料的粒径和装填高度之间的关系

Relationship between particle size and filling height of filter material

滤床的高度和滤料的平均粒径的比值为800～1 000(设计规范)。

The ratio between the height of the filter bed and the average particle size of the filter material is 800-1000 (design specification).

滤料的粒径的大小和过滤精度相关。

The particle size of the filter material is related to the filtration accuracy.

更多的关于山东多介质过滤器的问题或者详细的内容，请进入我们公司的网站：http://www.jnlzsb.com网站中会有很多的内容仅供参考。

For more information about Shandong multi-media filter, please visit our website: http://www.jnlzsb.com There will be a lot of content in the website for reference only.