B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
183/105
B01D 46/30 (2006.01)
Patent
CA 1081624
GRANULAR BED FILTER Abstract of the Disclosure The filter apparatus includes a plurality of hollow filter chambers each including a filter bed whose volume greatly exceeds the volume of the granular filter material such as sand. The beds are backwashed by a steady flow of low pres- sure air sufficient to fluidize the beds.
287696
Ducon Company Inc. (the)
Gowling Lafleur Henderson Llp
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