Pressure Sand Filter

Pressure Sand Filter is used in the process of filtration. It is used for eliminating suspended solids & solidify impurities like dust particles, rags, heavy metals etc. Pressure Sand Filter is recommended for the systems with large deposits of sediment, sand, and turbidity. The Pressure Sand Filters are designed specially to remove a wide range of suspended pollutants. In the Sewage Treatment process Sand Filters are used at the final polishing stage. Fine mesh sand is used as the filtering media, supported with different layers of media.

What Does A Pressure Sand Filter Do?

• Utilize surface area
• Create minor pressure drop across the pressure bed
• Effectively remove the impurities

Sand filters are used for water purification. There are three main types:

• Rapid sand filters
• Up flow sand filters
• Slow sand filters

What Are The Features Of Pressure Sand Filters?

• Provide efficient turbidity and TSS (Toxic Shock Syndrome) Removal
• Ability to filter 20-30 microns
• Silica quartz sand media for filtration
• Their operation can be Manual, Semi Automatic or Automatic
• For high flow pressure vessel, air scouring can also be available

How Do The Pressure Sand Filters Work?
Pressure Sand Filter includes a pressure vessel which is fitted to a set of anterior pipe work and valves. Graded silica quartz sand is held by a bed having layers of pebbles and gravel. A top distributor is connected to regulate the flow of water coming equally during the cross section of the filter.

There is a filter bed which is treated by a coagulant like alum. When water flows through the filter bed then it is preserved on the surface of sand and also in midst of sand grains just below the surface. As the process of filtration is carried on, rise in the loss of head takes place steadily, reducing the flow of water.

Then the filter is cleaned with the effect of flow reversal and air agitation followed by backwash operation is done for cleaning the filter. The sand is agitated with air scouring to loosen the intercepted particles and then the filter can be used again.

There are many Pressure Sand Filter Manufacturers today who offer excellent assistance in installation, usage guidance and maintenance as well. All you need to do is contact such a company through online B2B directories to specify your requirements and avail the best solutions.