Pressurized oxygenation system and method
US4235719A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 1978 |
| Grant date | Nov 25, 1980 |
| Priority date | — |
| Expiry date | Mar 27, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A system for performing an oxygenation process within a body of sewage at atmospheric pressure includes an oxygen absorber coupled to an oxygen supply at superatmospheric pressure. A storage vessel has an elongate chamber therein which is oriented vertically in the system. Pipes and valves are coupled to the upper and lower ends of the chamber so that the chamber is alternately communicated with the oxygen absorber and the body of sewage, thereby providing alternate high pressure and low pressure half cycles respectively. Initially, oxygenated liquor at superatmospheric pressure is in the oxygen absorber and the elongate chamber is filled with a quantity of low oxygen content liquor at atmospheric pressure. The valves are then operated during the high pressure half cycle to admit oxygenated liquor into the elongate chamber through the lower end and to simultaneously expel liquor and undissolved oxygen from the upper end into the oxygen absorber. The valves are then operated during the low pressure half cycle to reduce the chamber pressure to atmospheric and to admit a quantity of liquor from the body of sewage into the elongate chamber through the top end while simultaneously expel…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.