Multiple stage jet nozzle and aeration system
US4210534A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 11, 1979 |
| Grant date | Jul 1, 1980 |
| Priority date | — |
| Expiry date | May 11, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/75
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved system for mixing gas with waste water in which the water is pumped through a plurality of nozzles or vortex mixing chambers into which the gas is injected at a step region to form parallel streams of gas and water. The multiple stage nozzle includes an extending chamber which 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 divided into three sections or stages with at least one section tapered inwardly at a rate of 11.degree.-22.degree. to permit operation at higher air flow rates without loss of efficiency and the outermost section from which the mixed stream is directly discharged into the body of waste water being non-diverging, preferably cylindrical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.