US 11,752,456 B2
Optimization of rotary filters relative to risk of clogging a facility for pumping water from a natural site
Anne-Laure Besnier-Amogu, Acheres (FR); Guy-Michel Cicero, Puteaux (FR); Arthur Torossian, Paris (FR); Elisabeth Duvillard-Becker, Lyons (FR); Antoine Belaud, Lyons (FR); and Hugues Abel, Villeurbanne (FR)
Assigned to ELECTRICITE DE FRANCE, Paris (FR)
Appl. No. 16/767,885
Filed by ELECTRICITE DE FRANCE, Paris (FR)
PCT Filed Nov. 6, 2018, PCT No. PCT/EP2018/080331
§ 371(c)(1), (2) Date May 28, 2020,
PCT Pub. No. WO2019/105690, PCT Pub. Date Jun. 6, 2019.
Claims priority of application No. 17 61372 (FR), filed on Nov. 29, 2017.
Prior Publication US 2020/0368651 A1, Nov. 26, 2020
Int. Cl. B01D 35/143 (2006.01); B01D 33/04 (2006.01); B01D 33/073 (2006.01); B01D 33/50 (2006.01); B01D 33/80 (2006.01); C02F 1/00 (2023.01); G01N 15/08 (2006.01); C02F 103/00 (2006.01)
CPC B01D 35/143 (2013.01) [B01D 33/04 (2013.01); B01D 33/073 (2013.01); B01D 33/50 (2013.01); B01D 33/805 (2013.01); B01D 33/806 (2013.01); B01D 33/807 (2013.01); B01D 33/808 (2013.01); C02F 1/004 (2013.01); C02F 1/008 (2013.01); G01N 15/0826 (2013.01); B01D 2201/084 (2013.01); C02F 2103/007 (2013.01); C02F 2209/03 (2013.01); C02F 2209/11 (2013.01); C02F 2209/40 (2013.01); C02F 2209/42 (2013.01); C02F 2303/16 (2013.01); G01N 2015/084 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for managing a facility for pumping water originating from a natural environment containing impurities, a rotary filter used by the facility to purify the pumped water while at least some of the impurities are at least partially clogging the rotary filter, the method comprising:
calculating an evolution over time of a pressure loss caused by the clogging of the rotary filter by the impurities, based at least on:
data relating to the natural environment,
dimensions of the rotary filter, and
local measurements, relating to a water level Namont upstream of the rotary filter, and to a flow rate Qaspiré of water drawn in downstream of the rotary filter; and
adjusting a variable rotation speed of the rotary filter to increase or decrease based on an estimated pressure loss determined from the evolution over time of the pressure loss,
wherein the rotary filter comprises at least one cylinder that has a given radius RF, that is rotated about an axis of rotation having a height Naxe relative to a given reference, and that has a given width LF defined parallel to the axis of rotation,
wherein the pressure loss is defined by a difference between the water levels upstream Namont and downstream Naval of the rotary filter, and
wherein the evolution over time of the pressure loss is determined by calculating an evolution over time of the water level downstream of the rotary filter, given by:

OG Complex Work Unit Math
where:
Naval is a water level downstream of the rotary filter that is determined from a measurement of the flow rate Qaspiré of water drawn in downstream of the rotary filter,
Naxe is the height of the axis of rotation of the rotary filter, determined relative to a same reference as the water level Naval downstream of the rotary filter, and
Qfiltre is a flow rate of water through the rotary filter.