Patent ID: 11945733
Assignee: VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT
Field: Environmental technology (Chemistry)
Classification: CPC C | IPC C

Claim 0:
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.