Method and arrangement for wastewater treatment
US10800693B2 · kind B2 · utility
1Cited by
9References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 23, 2015 |
| Grant date | Oct 13, 2020 |
| Priority date | — |
| Expiry date | Aug 29, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The invention relates to a method and an arrangement for wastewater treatment, in which at least portions of the sewage sludge contained in the wastewater (0) are subjected to a hydrolysis (8). The hydrolysis (8) is carried out as a thermal hydrolysis. After the hydrolysis step (8), a drying process is (19) carried out. The drying process (19) is a process operating with positive pressure in the steam region. At least parts of the steam resulting from the drying process (19), which operates with positive pressure, are fed (20) to the portions of the sewage sludge in the thermal hydrolysis (8).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.