US 11,945,733 B2
Method for treating a fluid by upflow through a bed of adsorbent media
Abdelkader Gaid, Paris (FR)
Assigned to Veolia Water Solutions & Technologies Support, Saint-Maurice (FR)
Appl. No. 17/057,152
Filed by Veolia Water Solutions & Technologies Support, Saint-Maurice (FR)
PCT Filed May 22, 2019, PCT No. PCT/EP2019/063235
§ 371(c)(1), (2) Date Nov. 20, 2020,
PCT Pub. No. WO2019/224258, PCT Pub. Date Nov. 28, 2019.
Claims priority of application No. 1854254 (FR), filed on May 22, 2018.
Prior Publication US 2021/0206661 A1, Jul. 8, 2021
Int. Cl. C02F 1/28 (2023.01)
CPC C02F 1/283 (2013.01) [C02F 1/281 (2013.01); C02F 2201/002 (2013.01); C02F 2301/02 (2013.01); C02F 2301/046 (2013.01); C02F 2303/16 (2013.01); C02F 2303/24 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method of treating a fluid containing pollutant substances by flowing the fluid upwardly through a bed of adsorbent particles having a size of 600-1300 μm, wherein the adsorbent particles are grains or micrograins selected from the group consisting of activated carbon, resin, clay, zeolite, manganese dioxide, iron oxyhydroxide, or a mixture thereof, the method comprising:
directing the fluid into the bottom of a reactor;
from the bottom of the reactor, directing the fluid upwardly through an expansion zone in the reactor and through the bed of adsorbent particles in the reactor;
fluidizing and expanding the bed of adsorbent particles in the expansion zone as the fluid flows upwardly through the reactor;
directing the fluid upwardly from the expansion zone through a transition zone in the reactor where the concentration of adsorbent particles in the transition zone is less than the concentration of adsorbent particles in the expansion zone;
directing the fluid from the transition zone upwardly through a particle deflector disposed in the upper portion of the reactor above the transition zone;
as the fluid passes through the particle deflector, the upflowing liquid is deflected and in the process a tranquil zone is created adjacent the particle deflector;
as the fluid passes through the particle deflector, at least some of the smaller adsorbent particles come to a stop against the particle deflector and thereafter fall towards the bottom of the reactor;
wherein the particle deflector reduces or prevents at least some of the smaller adsorbent particles from leaking past the particle deflector;
adsorbing at least some of the pollutant substances in the fluid onto the larger and smaller adsorbent particles as the fluid flows upwardly through the reactor; and
directing treated fluid from the reactor and out an outlet disposed above the particle deflector and above the tranquil zone.