Sewage treatment-flotation apparatus
US4253949A · kind A · utility
17Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1976 |
| Grant date | Mar 3, 1981 |
| Priority date | — |
| Expiry date | Mar 29, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Solids-liquid separation, wherein a solids-liquid mixture containing dissolved oxygen-containing gas is circulated around a circulatory system comprising a downcomer and a riser, part of the mixture in the riser being introduced into a flotation chamber in which the hydrostatic pressure gradually decreases as the mixture flows upwards, with consequent release from solution of gas bubbles which carry solid particles to the top of the mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.