Method of deodorizing sludge and device for performing said method
US10301189B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2014 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Mar 10, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2305/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The continuous treatment of a flow of organic liquid sludge is disclosed. Following the optional addition of granular mineral matter to the flow, the sludge is injected at a rate q into a column of air which is at overpressure relative to atmospheric pressure. The air column is circulating at a rate Q>5q in a chamber extending over a specific length in order to create a fluidized bed, in which the sludge is aerolized, between air supply piping upstream of the sludge injection and an outlet reservoir downstream of the fluidized bed, the reservoir being substantially at atmospheric pressure. A flocculant is introduced continuously downstream of the chamber into the fluidized bed in order to aggregate the organic matter before the solid part obtained in this way is separated from the liquid part, the resulting solid part thus being deodorized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.