Staggered diffuser arrangement for waste water treatment systems
US5013493A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 22, 1990 |
| Grant date | May 7, 1991 |
| Priority date | — |
| Expiry date | Jan 22, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F23/231143
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A wate water aeration system in which tubular diffusers are arranged with short and long diffuser assemblies alternating along the length of each air lateral submerged in the treatment basin. This arrangement provides application of air which is widely distributed in the basin and descreases the upward water velocity to increase the air bubble residence time for enhanced oxygen transfer efficiency. When plural air laterals are used, each long diffuser assembly is axially aligned with a short diffuser assembly on the adjacent air lateral. Each long diffuser can either be constructed to discharge air along its entire length or it can include an imperforate pipe section which occupies one half of the diffuser length adjacent to the air lateral.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.