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MultiMedia Water Filter

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Multi Media Water Filter System

Multi media water filter design is effective in removing rust, dirt, silt, and other suspended solids from water down to 5 to 10 microns. The effectiveness increases industry’s ability to conserve, treat and recycle large amounts of water.

Fully automated multimedia filtration systems cleanse coarse residue, particles, suspended solid matter and materials that cause blurriness in industrial and commercial applications to make your water useable. Multimedia filters are drained during service periods and are cleaned extensively during the backwash period. This feature refreshes your system and increases its operational lifespan. Multimedia filtration systems are designed at the required flow rates and allow you to obtain high rates of efficiency.

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Features

3-6 bar operating pressure

Max. 10 bar test pressure

Automatic back wash timer

Programmable automatic valve

Max. 40 °C operating temperature

Electrical supply 220 V/50 Hz

4 different sizes of media content

Corrosion resistant FRP (fibreglass reinforced plastic) housing

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It uses a special, semi-permeable membrane which removes impurities as small as 0.0001 micron (i.e. 0.00000004 inches) in size, cleansing water of all biological impurities, suspended particles, dissolved solids (TDS), salts, metals and chemicals.

Almost all high-rate filter media are granular solid materials of reasonably uniform size. In this type of filter there has been some discussion on the issue of retention of solids in the media, but only three types of retention have been deemed adequate and most efficient: straining at the surface, attachment of small particles to the media grains in the filter bed, and settling. fashion.

Straining at the surface will take place for all particles too large to enter the pores in the media. When the surface has been saturated or covered with collected solids, no smaller particles will enter the bed. The filter will eventually lug, resulting in a high differential pressure across the filter.

S Attachment of smaller solids to media grains is the basic principle of high-rate filtration. Many natural solids will adhere to media surfaces to some extent. This bond’s resistance to the shear forces of the water flow is the measure of success of the filtration.

Backwash usage is usually stated as a percentage of water produced. Production runs at 15 gpm per sq ft filter rate can vary from 48 hr on stream with low suspended solids (5 ppm) to very short runs of 2 hr with extremely heavy organic particle loading. In the latter case, backwash water usage is approximately 2 percent of produced water, but in most installations, the wash water usage is found to be less than 0.1 percent. Ten percent wash water consumption is regarded as excessive.

The selection of filter media does not change the basic filter design. Therefore, it is possible change the media bed in a filter to suit a particular service without modifying any of the internal or external filter piping requirements. Media grains can be of any hard, compatible material. Grain shapes can vary considerably and good results are obtained with either rounded or sharp-edged granules.

Uniformity of size is of paramount importance. Media effective size is usually defined as the theoretical square screen opening which will retain 90 percent by weight of media. Uniformity coefficient is the ration of the size of opening which will pass 60 percent media to the effective size. The more uniform the grains, the closer the uniform the grains, the closer the uniformity coefficient approaches unity.

A fine media with effective size of 0.3 mm and uniformity coefficient of 1.4 maximum is usually selected.

A course media might have 0.45 mm effective size and 1.4 maximum uniformity coefficients.

The support sand may have an effective size of 1.2 mm and a uniformity coefficient of 1.6 maximum.

In many cases, the fine media will remove 95 percent of the particles down to 6 microns, and the coarse media will remove particles down to 15 microns.

Actual efficiency is so dependent upon site conditions that these numbers should only be used as a general guide.

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