FIELD: groundwater purification. SUBSTANCE: apparatus consists of settling tank with disposed therein screen cylinders having sealed cover and bottom, conical barriers stacked in cylinders, and perforated rods installed along cylinder axes to reciprocate in vertical direction. The latter bear rigidly attached conical diaphragms. EFFECT: improved structure. 1 dwg
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|---|---|---|---|
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|
RU2131760C1 |
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RU2245616C2 |
