Sludge dewatering system
US10322958B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2015 |
| Grant date | Jun 18, 2019 |
| Priority date | — |
| Expiry date | Apr 9, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A sludge dewatering system includes: a concentration apparatus that concentrates sludge while conveying the sludge on a top surface of a filter body; and a dewatering apparatus that subjects the sludge discharged from the concentration apparatus to pressure dewatering. The concentration apparatus includes: a filtering unit that subjects the sludge, which has been added with a first chemical agent, to gravity filtration; a chemical feeder that adds a second chemical agent to the sludge conveyed in the filtering unit; and a moving mechanism that moves the sludge, which has been added with the second chemical agent, in a direction intersecting a conveyance direction of the filter body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.