Multimedia filter

Water multimedia filter by far is the most common type of water filtration , they contain multi layers of media. Each layer is progressively sized in coarseness and layer depth. The media layers are stacked progressively with the coarsest and densest media , typically gravel, at the bottom and the lighter, finer media , at the top. Pressure vessels with sand or other loose media are widely used in industrial filtration applications.

During the cleaning cycle, called backwash, the bed is lifted (or fluidized) to loosen the filter media and release trapped dirt which is removed in the backwash flow. These filters are called multi- media filters because they contain different layers of filtration media ordered in decreasing porosity.

Not your garden variety rocks and san these are highly classified medias that conform to AWWA American Water Works Association B1specifications and sieve analysis for uniformity of shape and size. While there are plenty of types of media filters that filter water for drinking, swimming, aquariums, and other aquatic uses, there are specialized media filters that can filter air. These types of media air filters are slightly different from the regular air filter , and we will discuss their differences. When the filters are loaded with particles, the flow direction is reversed and the flow is increased to clean the filter again. This step is called a backwash.

What is a multimedia water filter? Find the Best Industrial Media Filter Systems for Water Filtration. Types: Water Media Filter System, Industrial Media Filters.

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Multimedia filter s are also sometimes referred to as dual media, anthracite, granular media, multi-layer or pressure filters. Multi-media filters use graded support media layers over the under-drain to prevent the layers from migrating into each other during backwashing. Multimedia Filters Multimedia Filters and Depth Filters: Produce filtered water and remove sediment efficiently.

Traditional filter systems use graded silica sand filter media. Since the sand grains all have about the same density, larger grains lay toward the bottom of the filter bed and finer grains lay at the top of the filter bed. MECO multi-media filters are designed for the removal of suspended solids greater than microns. The media filters are designed based on your effluent water quality required and the feed water analysis.

Multi-Media depth filters typically remove particles 5-microns in size or larger. Media filters can be provided individually or as part of a total water treatment solution. All media included in our filters are carefully selected according to particle size, so the media retains its stratification during backwash and rinse. Automatic backwashing system removes the trapped contaminants within the filter bed and washes them down the drain.

Most municipal drinking water systems worldwide use a filtration solution that consists of a rapid sand filter , often combined with the traditional slow sand filter. A bed of fine sand supported by suitable drainage materials goes a long way in removing suspended solids. A multi-media filter is backwashed in the same manner as a sand filter , using reverse or upward flow of water through the filter bed.

The various layers of media retain their stratification because each material has a different density.