FIELD: filtration of water at reverse osmosis and soft periodic back pressure on filter membrane.
SUBSTANCE: proposed system (10) includes reverse osmosis filter unit (19) provided with filter inlet communicated with inlet (11) of system and filter outlet (13) communicated with collecting container (12) used for storage of filtered water. At least part of said container is located above filter membrane owing to which delivery pressure is built up in container relative to filter membrane, thus making it possible to form counter flow of water though it. Cutoff valve (27) fitted between inlet (11) of system and filter inlet is used for excluding admission of liquid between them at minimum delivery pressure in container relative to filter membrane.
EFFECT: updating of system; enhanced efficiency of water contamination.
17 cl, 5 dwg
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