Our plants are designed by a team who have over 25 years of experience in water treatment design and plant erection. This is what makes our belief come true.. " Water ... The purest Liquid in life ... Purification of the impurities may be difficult, but it is surely possible ". In the reverse Osmosis section we have such huge capacity plants, that no other companies in Kerala can ever think of.Process
FiltrationFiltration is the process of passing liquid containing suspended matter through a suitable porous material (filtering medium) to effectively remove the suspended
Impurities in the liquid. Filtration is the final step in the solid removal process which includes coagulation,
Flocculation and sedimentation . The purpose of filter as mentioned earlier is to remove the particulate impurities and floc from the water being treated.
Pressure Sand Filter
Pressure Filters are closed cylindrical vessel either vertical or horizontal (mostly vertical) containing the filter media over a collector system. Water flows from top downwards percolating through the media and is drawn off through the collector system at the bottom. Cycle of operation are service, back wash with or without air scouring, short rinse to waste and return to service. Increase in pressure drop indicates that filter media is fouled and requires backwashing.The following materials are normally used as filter media - Quartz sand, silica sand.
Filter which uses only sand is called sand filter.
Activated Carbon Filter
Activated Carbon is an effective method for adsorbing organics and removal of chlorine. Activated carbon can be used either as powdered activated carbon or as granular activated carbon. In Filtration plant, activated carbon is normally used in Granular form. It normally precedes the Ion exchange unit. Activated carbon is used for removal of organics and dechlorination to protect the ion exchange resin from fouling and oxidation.
The carbon granules are placed in a filter which is similar in construction to pressure filter and is normally placed after the pressure filter unit. The area and depth of carbon filter depends upon the amount of organics present.