PULSED SLUDGE BED SETTLING METHOD AND DEVICE

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United States of America Patent

APP PUB NO 20120111806A1
SERIAL NO

13376639

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Abstract

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The invention relates to a pulsed sludge bed settling method for treating all types of liquid, in particular water, and which uses at least one powder or grain reactant, according to which: the liquid and the reactant(s) for the treatment are contained in a tank (1) comprising, at the base thereof, a means (2) for uniformly feeding liquid to be treated over the entire surface thereof; the treated liquid is discharged into the top portion of the tank, at the top level (S) of the liquid; the liquid to be treated is supplied into the tank by pulsations, inducing alternating vertical movements of the sludge bed (M); and part of the sludge is spilled into a concentrator (12) when the top level of the sludge bed exceeds a spilling level (Ld). The amplitude of the alternating vertical movements of the sludge bed (M) is varied between at least two values: one of said values corresponds to a high sludge bed level (Nh2) that is lower than the spilling level (Ld), and the other of said values corresponds to a high sludge bed level that is higher than the spilling level (Ld), with the discharge of the sludge and the reactant.

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Patent Owner(s)

Patent OwnerAddress
DEGREMONT183 AVENUE DU 18 JUIN 1940 92508 RUEIL MALMAISON

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Langlais, Chrystelle Le Pecq, FR 11 55
Vital, Jean Lois Le Pecq, FR 1 5

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