Fluid treatment reactor

Patent metadata

Field	Value
Publication number	US-9650267-B2
Application number	US-49384809-A
Country	US
Kind code	B2
Filing date	Jun 29, 2009
Priority date	Jun 29, 2009
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

A fluid treatment reactor is provided. Separate input ports for influent and recycled effluent serve to eliminate the need for pH adjustment or carbonate stripping of the influent and recycled effluent flows.

First claim

What is claimed is:

1. A method for treating a fluid, the method comprising:
injecting influent into a crystallization precipitation reactor, wherein the crystallization precipitation reactor comprises a vessel containing a media and defining a lower portion and an upper portion,
the influent injected into the reactor proximate the lower portion of the vessel via a first conduit, the flow of influent in an upward direction relative to the reactor;
discharging effluent from the reactor proximate the upper portion of the vessel into a suspended solids polishing device; and
injecting recycled effluent from the suspended solids polishing device into the reactor proximate the lower portion of the vessel via a second conduit, the flow of recycled effluent in an upward direction relative to the reactor,
wherein one of the first and second conduits injects fluid into the reactor through the bottom of the reactor at a position substantially located at the center of the bottom of the reactor, and
wherein the first conduit and second conduit are concentric relative to each other and define concentric and parallel flows,
wherein the first conduit and second conduit are in fluid communication with the vessel, and the influent within the first and second conduits do not contact each other until they have made contact with the media in the vessel,
and wherein the concentric flows do not contact the media in the vessel until they exit the respective first and second conduits,
and wherein the flow from the first and second conduits maintains consistent hydraulic loading of the reactor.

2. The method according to claim 1 , further comprising the step of injecting reagent into the reactor proximate the lower portion of the vessel, or into the second conduit.

3. The method according to claim 1 , further comprising the step of discharging solids from the vessel via a solids discharge port located in the vessel between the upper portion and the lower portion.

4. The method according to claim 1 , further comprising the step of recharging or adding clean media to maintain the treatment process.

5. The method according to claim 1 , wherein the fluid is water-based.

6. The method according to claim 1 , wherein the media is one of sand and a seeding agent.

7. The method according to claim 6 , wherein the seeding agent is a material that can be fluidized and provide a nucleation point to form a crystal and/or provide for the adsorption of a precipitated material.

8. The method according to claim 1 , wherein a circumference of the upper portion is substantially the same as a circumference of the lower portion.

9. A method for treating a fluid, the method comprising:
injecting influent into a crystallization precipitation reactor, wherein the crystallization precipitation reactor comprises a vessel containing a media and defining a lower portion and an upper portion,
the influent injected into the reactor proximate the lower portion of the vessel via a first conduit, the flow of influent in an upward direction relative to the reactor;
discharging effluent from the reactor proximate the upper portion of the vessel into a suspended solids polishing device; and
injecting recycled effluent from the suspended solids polishing device into the reactor proximate the lower portion of the vessel via a second conduit, the flow of recycled effluent in an upward direction relative to the reactor,
wherein one of the first and second conduits injects fluid into the reactor through the bottom of the reactor, and
wherein the first conduit and second conduit are concentric relative to each other and define concentric and parallel flows,
wherein the first conduit and second conduit are in fluid communication with the vessel, and the influent within the first and second conduits do not contact each other until they have made contact with the media in the vessel,
and wherein the concentric flows do not contact the media until they exit the respective first and second conduits.

10. The method of claim 9 , wherein the radius of the first conduit at the reactor is smaller than the radius of the second conduit at the reactor, and the first conduit is disposed concentrically within the second conduit.

11. The method of claim 9 , wherein the radius of the second conduit at the reactor is smaller than the radius of the first conduit at the reactor, and the second conduit is disposed concentrically within the first conduit.

Assignees

• O'Leary Kevin Patrick
• Nalco Co

Inventors

• O'Leary Kevin Patrick

Classifications

• C02F1/52

  by flocculation or precipitation of suspended impurities {(C02F1/463 takes precedence)} · CPC title

• C02F1/5236 Primary

  using inorganic agents · CPC title

• B01D9/0036 Primary

  Crystallisation on to a bed of product crystals; Seeding · CPC title

• C02F9/00

  Multistage treatment of water, waste water or sewage · CPC title

• C02F2301/046

  Recirculation with an external loop · CPC title