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US 7,404,900 B2Granted
Ammonium removal system including an electrophysical separation system
AssigneeNew Earth Systems, Inc.
InventorKirk D. Bradley
Life of this patent
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Abstract
An ammonium removal system includes an ion-exchange medium, a brine source, and an electrophysical separation system. The ion-exchange medium may be used to remove ammonium from a waste stream. A brine may be flushed through the ion-exchange medium to remove the ammonium from the ion-exchange medium. The ammonium containing brine may be treated using an electrophysical separation system.
Claims14
A system comprising:
- an ion-exchange unit including an ion-exchange medium configured to remove cations from a waste stream;
- a brine source which is in fluid communication with the ion-exchange unit to deliver brine to the ion-exchange unit, the brine being configured to remove the cations from the ion-exchange medium and thereby produce a cation-containing brine;
- a reactor positioned to receive and treat the cation-containing brine;
- an electrophysical separation system positioned to receive and treat the cation-containing brine either before or after the cation-containing brine enters the reactor.
1 more element
A method of removing cations from a waste stream comprising:
- passing a waste stream that includes cations through an ion-exchange medium;
- flushing the ion-exchange medium with a brine to remove the cations from the ion-exchange medium and thereby produce a cation-containing brine;
- treating the cation-containing brine using an electrophysical separation system;
- and
- reacting the cation-containing brine with an oxidant to produce a treated brine that is reused to flush the ion-exchange medium.
2 more elements
Dependencies are inferred from the claim text.