EP 2440304 A1 20120418 - PULSED SLUDGE BED SETTLING METHOD AND DEVICE
Title (en)
PULSED SLUDGE BED SETTLING METHOD AND DEVICE
Title (de)
VERFAHREN UND VORRICHTUNG FÜR GEPULSTES SCHLAMMBETTABSETZUNG
Title (fr)
PROCÉDÉ ET DISPOSITIF DE DÉCANTATION A LIT DE BOUES PULSÉ
Publication
Application
Priority
- IB 2010052473 W 20100603
- FR 0902760 A 20090608
Abstract (en)
[origin: WO2010143102A1] 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.
IPC 8 full level
B01D 21/24 (2006.01); B01D 21/08 (2006.01); B01D 21/34 (2006.01); C02F 1/00 (2006.01); C02F 1/28 (2006.01); C02F 1/52 (2006.01)
CPC (source: EP US)
B01D 21/08 (2013.01 - EP US); B01D 21/16 (2013.01 - EP US); B01D 21/2405 (2013.01 - EP US); B01D 21/2488 (2013.01 - EP US); B01D 21/30 (2013.01 - EP US); B01D 21/34 (2013.01 - EP US); C02F 1/283 (2013.01 - EP US); C02F 1/44 (2013.01 - EP US); C02F 2001/007 (2013.01 - EP US)
Citation (search report)
See references of WO 2010143102A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
FR 2946261 A1 20101210; FR 2946261 B1 20110722; AU 2010258320 A1 20111215; EP 2440304 A1 20120418; US 2012111806 A1 20120510; WO 2010143102 A1 20101216
DOCDB simple family (application)
FR 0902760 A 20090608; AU 2010258320 A 20100603; EP 10728323 A 20100603; IB 2010052473 W 20100603; US 201013376639 A 20100603