Water Treatment Equipments
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Clarifiers are used to remove suspended solids from raw water. Conventional clarifiers are circular in structure and require higher residence time and lesser velocity. This is an ideal choice for process industries with larger water requirement. Lamella type clarifiers are relatively new generation one which requires much lesser space because they can operate at higher velocity due to increased surface area. Lamella clarifier can be plate type or tube settler type. All the above range of clarifiers and are custom designed.
These are essentially are mixed bed units which are used for purifying return condensate from boiler. This operation is carried out at a higher temperature.
Sand, Activated Carbon, Multimedia and Greensand Media – choice of a filter depends upon the quality and source of water. Ideally for river water filters are placed after clarifier. For deep well water, as the suspended solids are much lesser compared to river water one can design system with filters as pre – treatment without clarifiers. Sand Filter and multi media filter are used for removing traces of TSS while activated carbon filter is used to remove color and organics. Green sand media filter is chosen when Fe and Mn are higher in the raw water.
MB units are double be system where the feed water is demin water while the treated outlet quality is very pure
(conductivity < 0.1 microsiemens / cm )
is the process of forcing a solvent from a region of high solute concentration through a membrane to a region of low solute concentration by applying a pressure in excess of the osmotic pressure This is the reverse of the normal osmosis process, which is the natural movement of solvent from an area of low solute concentration, through a membrane, to an area of high solute concentration when no external pressure is applied. The membrane here is semi permeable, meaning it allows the passage of solvent but not of solute.
Water softeners are used to remove total hardness from filtered water. Soft water has a tendency to avoid corrosion in boilers, cooling systems and pipes. Softening process is an ionic process which used strong acid resins for removing total hardness partially/completely from clarified water.