Microporous PE/PA filter tube can be backwashed or backwashed multiple times

2022-01-10 13:38

In modern industrial production and daily life, filtration technology plays a vital role. Whether it is water treatment, food processing, or chemical production, filtration equipment is the key to ensuring product quality and production safety. Among the many filtration materials, microporous PE (polyethylene) / PA (polyamide, also known as nylon) filter tubes have attracted much attention due to their unique properties and wide application fields. It is particularly worth mentioning that microporous PE/PA filter tubes are resistant to backwashing and backwashing, and can maintain excellent filtration performance after multiple uses. This article will explore this feature and its application in depth.

1. Basic characteristics of microporous PE/PA filter tubes

Microporous PE/PA filter tubes are a kind of porous filter material made of polyethylene or polyamide as the main raw material through a special process. This material has a uniform microporous structure, and the pore size range is usually between 0.1 and 100 microns, which can effectively intercept suspended matter, particles, colloids and some microorganisms in water. PE material is suitable for a variety of acid and alkali environments due to its good chemical stability and corrosion resistance; while PA material can maintain stable filtration efficiency under more severe working conditions due to its high strength, wear resistance and high temperature resistance.

II. Analysis of backflush and backwash mechanisms

During the filtration process, as the running time increases, impurities will gradually accumulate inside the filter tube, resulting in a decrease in filtration efficiency or even blockage. In order to restore filtration performance, two commonly used methods are backflush and backwash.

- **Backflush mechanism**: By passing high-pressure gas (usually compressed air) into the filter tube, the impurities attached to the tube wall are removed by the flushing effect of the gas. This process is fast and effective, especially suitable for handling dry or low-viscosity impurities.

- **Backwash mechanism**: It uses clean liquid (such as water) to flow through the filter tube in reverse to remove impurities by the flushing force of the liquid. Backwashing is more suitable for handling wet, viscous or water-soluble impurities.

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