Treatment of produced water
US9315405B2 · kind B2 · utility
0Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2011 |
| Grant date | Apr 19, 2016 |
| Priority date | — |
| Expiry date | Mar 4, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of treating produced water containing hydrocarbons includes introducing microbubbles of a lift gas into the produced water in a separation stage to float oil to a surface of the produced water. The top layer of oil is removed from the surface of the produced water. Microbubbles of an oxidizing gas are introduced into the produced water in an aeration stage to oxidize contaminants. Microbubbles of an ultra-violet light treated oxidizing gas are introduced into the produced water in an advanced oxidation stage to oxidize remaining contaminants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.