Water and wastewater treatment system with internal recirculation
US5800717A · kind A · utility
36Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1996 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Oct 2, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2305/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A sedimentation device for treating water and wastewater utilizing differential sedimentation and recirculation in an internal recirculation reactor with an upflow zone and a downflow zone within a settling tank. Inert particles are added to the internal recirculation reactor to increase the growth rate of forming flocs and increase the differential sedimentation of the flocs in the downflow zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.