Multigrade Sand Filters

The working principle of a multigrade filter is quite straight forward.In a multigrade filter or pressure sand filter, water is passed through multi layers of filter media consisting graded sand, pebbles and gravels layers. The contaminants in the water are captured in the media bed and filtered water passes into the discharge manifold at the bottom of the tanks. The next and last step is backwashing, a process of effectively removal of captured contaminants from the media bed. After back-washing the filter is rinsed with raw water and after the required quality of water is achieved the filter is put back into service.

Avion Activated Carbon Filters

Consists mainly of pure carbon; activated carbons are considered most powerful absorbents. This exceptional feature makes them ideal for utilizing in water treatment, where activated carbon filters are widely used in purifying, removing odor, colour, pesticide and benzene. These activated carbon water filters also remove some metals, chlorine and radon from water. An Activated Carbon Filter contains carbon particles of various sizes ranging from 10 to 50 mesh. The carbon is made from burning coconut shells in the presence of oxygen. This carbon is further activated by steam or chemical method, where steam carbon contains very fine pore sizes that are ideal for absorption of components from water.

Avion Water Softeners Semi-automatic / Automatic

Softeners are used for water having high hardness. All water containing calcium and magnesium salts in considerable amount is called hard water. This hard water will deposit a hard scale in pipes, heating coil, boiler etc. resulting in waste of efficiency, fuel and money. The softening is done by ion exchange process, this process uses an ion exchange resin which replaces the calcium and magnesium ions in the waste by an equivalent number of sodium ions.