Multi Media Filter

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. Incoming feed water that is high in suspended solids can cause a high(pressure drop and reduce the effectiveness of downstream filtration equipment such as reverse osmosis membranes and ion exchange beds.

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 medias of choice because of the differences in size and density. The larger (but lighter) anthracite coal will be on top and the heavier (but smaller) garnet will remain on the bottom. The filter media arrangement allows the largest dirt particles to be removed near the top of the media bed with the smaller dirt particles being retained deeper and deeper in the media. This allows the entire bed to act as a filter allowing much longer filter run times between backwash and more efficient particulate removal.

Activated Carbon

Carbon filteringis a method of filtering that uses a bed ofactivated carbonto remove contaminants and impurities, using chemicaladsorption.

Each particle/granule of carbon provides a large surface area/pore structure, allowing contaminants the maximum possible exposure to the active sites within the filter media. One pound (450 g) of activated carbon contains a surface area of approximately 100 acres (40 Hectares).

Activated carbon works via a process calledadsorption, whereby pollutant molecules in the fluid to be treated are trapped inside the pore structure of the carbon substrate.

These filters are used to reduce chlorine, organics, color, tannin, and objectionable tastes and odors from water. Automatic backwashing system removes the trapped contaminants within the filter bed and washes them down the drain. Our Household Carbon Filter use NSF approved coconut shell based carbon.

These filters are most effective at removing chlorine ,sediment,volatile organic compounds(VOCs), taste andodorfrom water.

Typical particle sizes that can be removed by carbon filters range from 0.5 to 50 micrometers. The particle size will be used as part of the filter description. The efficacy of a carbon filter is also based upon the flow rate regulation. When the water is allowed to flow through the filter at a slower rate, the contaminants are exposed to the filter media for a longer amount of time.

Sedimentation System

Sedimentation is a physical water treatment process using gravity to remove suspended solids from water. Solid particles entrained by the turbulence of moving water may be removed naturally by sedimentation in the still water of lakes and oceans. Settling basins are ponds constructed for the purpose of removing entrained solids by sedimentation.Clarifiers are tanks built with mechanical means for continuous removal of solids being deposited by sedimentation applications:

• Potable water treatment
• Waste water treatment

Degazifier

Degasifier is constructed from Polyethylene (PE) or Glass Reinforced Plastic with SS 316 distribution nozzles and Polypropylene stripping media. The degasifier is factory assembled complete with blower. The collection tank, circulation pump, chemical injection system and control panels are available as optional items.

The benefits of using Degasifier include:

• Stabilize RO effluent and thus reduce corrosion of distribution piping and fittings
• Reduce or eliminate the use of hydroxide solutions to adjust pH of RO effluent
• Increase the oxygen level in RO effluent
• Decrease the initial and running cost of RO
• Decrease the an-ion bed exchange resin volume and consequently reduce overall cost.
• Eliminate H2S from contaminated water
• Removes H2S from RO and reduce the possibility of RO membranes fouling with sulfur
• Removes H2S from RO effluent and thus enhance its quality