IP Library Granted Patent US 7,144,510
Granted Patent B2
US 7,144,510 · App. 11/208,905 · Granted Dec 5, 2006

Method and apparatus for treatment of a fluid stream

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Quick Facts
Patent No.
US 7,144,510
App. No.
11/208,905
Granted
Dec 5, 2006
Kind
B2
Abstract

A method for treating a fluid by providing a raw fluid to a process tank. The raw fluid may be water having varying degrees of contamination or another type of fluid. The method further consists of adding an ion exchange resin to the process tank to form a raw fluid/ion exchange resin mixture. After the fluid has been sufficiently contacted with the ion exchange resin, treated fluid is removed from the process tank through a membrane filter located within the process tank. The method is completed by regenerating the ion exchange resin within the same process tank.

Claims (14)

1. A method for treating a fluid comprising:

a) providing an up-flow bed containing an ion-exchange resin within a portion of a process tank;

b) removing dissolved contaminants from the fluid by flowing a stream of the fluid through the up-flow bed;

c) removing particulate contaminants from the fluid by removing treated fluid from the process tank through a membrane filter, wherein said process tank contains said membrane filter; and

d) regenerating the ion-exchange resin in the up-flow bed portion of the process tank.

2. The method of claim 1 further comprising reusing a regenerant in multiple regeneration steps.

3. The method of claim 2 further comprising filtering the regenerant to restore its regenerative properties.

4. A method for treating a fluid comprising:

a) providing an up-flow bed containing an ion-exchange resin with an outlet of the up-flow bed being in fluid communication with a process tank;

b) removing dissolved contaminants from the fluid by flowing the fluid through the up-flow bed, out of the outlet and into the process tank;

c) removing particulate contaminants from the fluid by passing the up-flow bed treated fluid through a membrane filter, wherein said process tank contains said membrane filter; and

d)regenerating the ion-exchange resin in the up-flow bed.

5. The method of claim 4 further comprising reusing a regenerant in multiple regeneration steps.

6. The method of claim 5 further comprising filtering the regenerant to restore its regenerative properties.

Assignments (4)
RELEASE OF SECURITY INTEREST Recorded Dec 21, 2017
From: WELLS FARGO BANK, NA
To: CH2M HILL ENGINEERS, INC.; CH2M HILL, INC.
Reel/Frame 044460/0727 →
RELEASE OF SECURITY INTEREST Recorded Dec 18, 2017
From: WILMINGTON TRUST, NA
To: CH2M HILL, INC.; CH2M HILL ENGINEERS, INC.
Reel/Frame 044417/0862 →
SECURITY INTEREST Recorded Apr 28, 2017
From: CH2M HILL, INC.; CH2M HILL ENGINEERS, INC.
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS SECURED NOTES COLLATERAL AGENT
Reel/Frame 042181/0309 →
SECURITY INTEREST Recorded Oct 3, 2016
From: CH2M HILL, INC.; CH2M HILL ENGINEERS, INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 039926/0535 →