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Partial bed backwashing for packed bed reactor
US2016297698A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016297698-A1 |
| Application number | US-201514969819-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 15, 2015 |
| Priority date | Apr 9, 2015 |
| Publication date | Oct 13, 2016 |
| Grant date | — |
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Abstract
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A media bed reactor may be used to remove selenium from water. An exemplary reactor has a fluid injection system with one or more outlets located within the media bed. The fluid injection system may be connected to a source of gas, liquid or both. In a selenium treatment process, a denitrification zone forms above a selenium-reducing zone in the media bed. Operation of the reactor includes a step of flowing a fluid upwards through only an upper part of the bed. This upper part of the bed preferably contains at least most of the denitrification zone.
First claim
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We claim: 1 . A reactor comprising, a media bed; and, a fluid injection system with one or more outlets located within a media bed. 2 . The reactor of claim 1 wherein the fluid injection system is connected to a source of a gas. 3 . The reactor of claim 1 , wherein the outlets are located within the central 80% of the height of the media bed. 4 . The reactor of claim 1 further comprising outlets located below or near the bottom of the media bed. 5 . A process for treating water, comprising steps of flowing the water downwards through a media bed; and, flowing a fluid upwards though an upper portion of the media bed. 6 . The process of claim 5 wherein the upper portion of the media bed contains at least part of a denitrification zone, and the media bed further includes a selenium-reducing zone.
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- What does patent US2016297698A1 cover?
- A media bed reactor may be used to remove selenium from water. An exemplary reactor has a fluid injection system with one or more outlets located within the media bed. The fluid injection system may be connected to a source of gas, liquid or both. In a selenium treatment process, a denitrification zone forms above a selenium-reducing zone in the media bed. Operation of the reactor includes a st…
- Who is the assignee on this patent?
- Gen Electric
- What technology area does this patent fall under?
- Primary CPC classification C02F3/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Oct 13 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).