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BONO ARTES developed a innovative solution that matches gravity filtration with self-cleaning operation. The result is a very simple unit with high filtration efficiency and low installation costs that is particularly suitable for cooling water filtration where very large capacities are concerned.
Filtration of raw water is operated by gravity. The operating principle is the hydrostatic level of the water up to the sand layer. The unit is provided with three chambers: one contains the filtration media, one filtered water and another is used for the separation between the filling media and the clarified water storage. Filtered water here contained is used to backwash the filter when the pressure drop reaches the set-point value. Unlike pressure-operated filters requiring pumps and blowers, backwashing is done by gravity and no rotating machinery, spare parts and control equipment (automatic valves, flow-meter, regulating instruments, control panels etc.) are required . Moreover the filter is operated without any supervising personnel.
The benefits of such applications lay in the efficient filtration process, very low operating costs and the advantage of being able to treat large flows of water.
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