Sand Filters

Approx. Rs 9,000 / PieceGet Latest Price

A sand bed filter is a kind of depth filter. Broadly, there are two types of filter for separating particulate solids from fluids:

• Surface filters, where particulates are captured on a permeable surface
• Depth filters, where particulates are captured within a porous body of material.^[4]

In addition, there are passive and active devices for causing solid-liquid separation such as settling tanks, self-cleaning screen filters, hydrocyclones and centrifuges.^[4]

There are several kinds of depth filter, some employing fibrous material and others employing granular materials. Sand bed filters are an example of a granular loose media depth filter. They are usually used to separate small amounts (<10 parts per million or <10 g per cubic metre) of fine solids (<100 micrometres) from aqueous solutions.^{[5]:302–303} In addition, they are usually used to purify the fluid rather than capture the solids as a valuable material. Therefore they find most of their uses in liquid effluent (wastewater) treatment.

Approx. Rs 28,000 / NumberGet Latest Price

Approx. Rs 12,000 / PieceGet Latest Price

Sand filtration is used for the removal of suspended matter, as well as floating and sinkable particles. The wastewater flows vertically through a fine bed of sand and/or gravel. Particles are removed by way of absorption or physical encapsulation. If there is excessive pressure loss on the filter, it must be rinsed.

A distinction can be made between continuous and discontinuous filters. In continuous filters (often upward-flowing filters), the polluted sand is removed, rinsed and re-used continuously, without interrupting the filtration process. Discontinuous filters (often downward-flowing filters) are stopped, and a rinse takes place in the opposite direction. Air bubbles are blown into the sand bed to make it swirl around. Filtered water then flows through the filter bed in the opposite direction. The polluted matter is released and flows away along with the rinse water. The filtration process can then resume.

The yield of a sand filter is determined by two sand filter functions, namely surface filtration and depth filtration. Surface filtration involves collecting the particles above the filter bed. These particles jointly form a macro-porous lump, which is able to collect new particles in a very effective manner. Depth filtration generally involves smaller particles that are more difficult to collect, and which are bound to the sand particles by adsorption.  Dirt from surface filtration is easier to remove during reverse rinsing compared to dirt from depth filtration.

Approx. Rs 15,000 / PieceGet Latest Price

Fiberglass Deep Bed Sand Filters offered by us are specially made from fiberglass winding and laminated polyester reinforced for high performance. Intricately designed for smooth functioning these Filters provides a stable and efficient water flow. Owing to its striking features like resistance to corrosion and chemicals, our Deep Bed Sand Filter is high one demand among the clients.

Feature:

• Maximum working pressure up to 600 KPA

• Drinking water
• Swimming pool
• Aquaculture
• Industrial water treatment

• Active carbon: for filtering away odor and organic compound
• Soft water resin: for softening and filtering away the minerals
• Lean water resin: for filtering away organic compound color fluoride and algae
• Nitrate selectable resin: for fleshing the fishpond