Filtration
Pressure Sand filters
These filters are the most popular method for removal of turbidity from water. The Pressure Sand Filter consists of a multiple layer of sand with a variety in size and specific gravity. These Filters are designed to remove turbidity and suspended particles present in the feed water with minimum pressure drop. These Filters are custom designed to suit the process requirement. These filters are offered in Mild Steel, FRP or SS construction with face piping and associated Valves.
Raw water flows down wards through the filter bed and as the suspended matter, which is treated by addition of a coagulant like alum or poly electrolyte, is retained on the sand surface and between the sand grains immediately below the surface. There is steady rise in the loss of head over a period of time and the flow reduces once the pressure drop across the filter is excessive.
The filter is then taken out of service and cleaning of the filter media is effected by flow reversal also called as backwash. To assist in cleaning the bed, the backwash operation is sometimes preceded by air scouring by way of agitation through the under drain system. The air scouring agitates the sand with a scrubbing action, which loosens the intercepted particles. The filter is now ready to be put back into service.
Activated Carbon Filters
The Activated carbon Filters are designed to remove free chlorine, organic matter, odour and Colour present in the raw water and waste water.Due to its high degree of micro porosity, activated carbons provide a huge surface area.Activated carbon filter operates through adsorption. Adsorption is directly related to the surface area of the media. This great surface area furnishes a huge adsorption area for organic as well as chlorine molecules to attach themselves.
The Activated Carbon Filters consist of Activated carbon granules supported by very fine quartz filter media. Various grades of carbon are available for specialized treatments.
Filtration is the most frequently used, robust method to remove suspended solids from water. The Filter consists of a multiple layer of sand/ Filter Media with a variety in size and specific gravity. The Filters are designed to remove turbidity and suspended particles present in the feed water with minimum pressure drop.
Fluid Systems offers a wide range of filters for varying applications with single/multiple media options to meet specific process requirements.
