Aeration method and system
US4157304A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1977 |
| Grant date | Jun 5, 1979 |
| Priority date | — |
| Expiry date | Dec 22, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/75
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved method and system for mixing gas with waste water in which the water is pumped through a plurality of mixing chambers into which the gas is injected at a step surface to form parallel streams of gas and water. An extending chamber contains the parallel streams as the interface between them becomes unstable, breaks down creating vortices and produces tiny bubbles which mix with the water. The extending chamber is tapered inwardly to permit operation at higher air flow rates without blowing the bubble forming vortices out of the chamber. Helical vanes are preferably provided in the passages which inject the air into the extending chamber to create better wave generating conditions to extend the range to greater air flow rates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.