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US 6,783,681 B2Granted
Method and apparatus for treatment of drinking water
AssigneeCH2M Hill, Inc.
InventorsPaul Mueller, Anthony G. Myers
Life of this patent
Estimating the term…
Abstract
An apparatus and method for the treatment and purification of drinking water combines the use of an ion-exchange resin and a membrane filter (12) in a single process tank. The ion-exchange resin is removed from the process tank (14) and regenerated for reuse.
Claims20
A method for treating drinking water comprising:
- a) providing raw water to a process tank;
- b) adding an ion-exchange resin to the process tank to form a raw water/ion-exchange resin mixture;
- c) removing treated water 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 process tank.
2 more elements
A method for treating drinking water comprising:
- a) providing raw water to a process tank;
- b) adding a magnetic ion-exchange resin to the process tank to form a raw water/magnetic ion-exchange resin mixture;
- c removing treated water from the process tank through a membrane filter, wherein said process tank contains said membrane filter;
- and
- d) separating the magnetic ion-exchange resin from the raw water/magnetic ion-exchange resin mixture using a high gradient magnetic filter.
2 more elements
An apparatus for treating drinking water comprising:
- a process tank for receiving raw water;
- an ion-exchange resin supply operatively associated with the process tank to provide ion-exchange resin to raw water within the process tank;
- a membrane filter operatively associated with the process tank and contained within the process tank for separating particulate matter from treated water removed from the process tank through the membrane filter;
- and
- a regenerant supply operatively associated with the process tank, the regenerant supply providing regenerant for regeneration of the ion-exchange resin within the process tank.
2 more elements
Dependencies are inferred from the claim text.