Recovery device and recovery method for recovering specific material from sludge
US10974982B2 · kind B2 · utility
5Cited by
42References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2016 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Oct 24, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A recovery device is configured to recover specific material as a dewatering aid from sludge generated in a sewage treatment process. The recovery device includes: a grinder configured to fragment a solid in the sludge to obtain prepared sludge; a separator configured to separate hardly decomposable organic matter and easily decomposable organic matter from the prepared sludge; and an extractor configured to continuously extract hardly decomposable organic matter having specific properties as the dewatering aid from the hardly decomposable organic matter separated by the separator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.