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Multimedia Filter

Multimedia Filter

Purpose of a Multi-Media Filter

A Multi-Media Filter is used to reduce the level of suspended solids (turbidity) in incoming feed water. Suspended solids consist of small particles such as silt, clay, grit, organic matter, algae, and other microorganisms.

What are mixed media filters?

Mixed-media filters have two or more types of filter material within a single container, usually a cylinder. The filter materials are selected to remove specific compounds from the water.

How does a Multi-Media Filter work?

Multi-Media Filter typically contains three layers of media consisting of anthracite coal, sand, and garnet, with a supporting (non filtering) layer of gravel at the bottom. These are the media of choice because of the differences in size and density.

What is the backwash procedure of multimedia filters?

Add a little Backwashing a multimedia pressure vessel involves passing a significant amount of water through the filter bed at low pressure in the opposite direction of the service flow, eliminating accumulated debris from the filter beds. Backwashing can be done either manually or automatically.

Filter Media Types

Pure Aqua supplies a wide range of quality flter media that meet industry standards for efcient and efective fltration

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Sand

Sand graded in various ranges can be used as filtration media or underbedding depending on particle size and application.

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Anthracite

Anthracite is recommended as a filter media where additional silica in the water is not desireable and removes lighter weight turbidity.

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Activated carbon

Activated carbon media is used to remove taste, odor and chlorine and used in many drinking water applications.

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Calcite

Calcite media is specially graded calcium carbonate compound for neutralizing acid with consistent dissolving rates for water treatment.

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Manganese Greensand

Manganese Greensand media is treated siliceous material for treating water containing iron, manganese and hydrogen sulfide.

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ProSand

ProSand is based on a rare natural mineral. Its unique properties radically improve the performance and cost of media filtration.

Mechanism

  • FRP vessels are empty fiber-wrapped polyethylene cylinders that can be filled with a variety of media such as carbon granules, silica sand, gravel, ion-exchange resins, and more.
  • These vessels need a valve on top (called a “head”) this head is either manual or automatic (digital) and controls functions such as back-washing and/or regenerating.
  • Media lifespan is greatly increased due to back-washing and regenerating functions of the FRP Vessel System. The average media lifespan is 3 – 5 years.
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