For an industrial equipment, it needs cleaning and maintenance, but the cleaning and maintenance time and mode of various accessories of the equipment are different. Multi media filter is an important part of industrial equipment. The filter material of Shandong multi-media filter must ensure that the chemical properties are very stable.

但是不同颗粒大小会体现出不同的密度,例如烟煤相对密度为1.4-1.6,粒径为0.8-1.8mm等.想让装置持续稳定运行,就要需要用多个过滤器进行不断冲洗,很多人都不知道多介质过滤器反洗的具体步骤,这里主要介绍对于多介质过滤器的反洗步骤具体有:反洗,空气擦洗,正洗.

However, different particle sizes will reflect different densities. For example, the relative density of bituminous coal is 1.4-1.6, and the particle size is 0.8-1.8mm. In order to ensure the continuous and stable operation of the unit, it is necessary to use multiple filters for continuous flushing. Many people do not know the specific steps of multi-media filter backwashing. Here, the backwashing steps of multi-media filter are mainly introduced, including backwashing, air scrubbing and forward washing

1、多介质过滤器反洗:将过滤器装置停止,然后将过滤器暂停,切断进水然后将反洗水泵打开,调整反洗流量到正常反洗流量每小时二百立方米左右.

1. Backwashing of multi-media filter: stop the filter device, then suspend the filter, cut off the water inlet, then turn on the backwashing water pump, and adjust the backwashing flow to the normal backwashing flow of about 200m3 per hour

2、多介质过滤器空气擦洗:通过反洗之后将空气擦洗,就是想把过滤器上的杂质去除掉,这样能增加反洗效果,当反洗结束后,就将其中的阀门关闭,以免出现乱层现象,经过五分钟反洗后,将其中的污染物杂质去除掉,知道反洗水清澈,再将反洗排水阀关闭.

2. Air scrubbing of multi-media filter: scrubbing the air after backwashing is to remove the impurities on the filter, which can increase the backwashing effect. When the backwashing is completed, close the valve to avoid layer disorder. After five minutes of backwashing, remove the pollutants and impurities in the filter, know that the backwashing water is clear, and then close the backwashing drain valve

3、多介质过滤器正洗:正洗是准备正常运行前,将其中的滤料进行多次过滤,以此来确保出水水质合格即SDI(污染指数)小于

3. Forward washing of multi-media filter: forward washing is to filter the filter material several times before preparing for normal operation, so as to ensure that the effluent quality is qualified, that is, the SDI (pollution index) is less than

4.  但是如果原水是井水的话,就得安装其他类型过滤器,因为水中有大量的铁哦锰等变价金属杂质.如果使用地表水做原水,则混凝和多介质过滤器都是必要的.

4. However, if the raw water is well water, other types of filters must be installed, because there are a lot of variable valence metal impurities such as iron, manganese and so on. If surface water is used as raw water, coagulation and multi-media filters are necessary