FIELD: process engineering.
SUBSTANCE: invention relates to used water purification in device with filtration medium and section pipe system. Device comprises compact set with filtration medium composed of walnut shells with bearing surface small enough to be used in open sea to reduce the amount of flushing water formed in countercurrent flushing of filtration zone and the number of dead zones that do not get in contact with flushing zone.
EFFECT: higher efficiency of cleaning.
21 cl, 10 dwg, 2 tbl, 2 ex
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