Process and apparatus for controlling the dewatering of suspensions
US5662805A · kind A · utility
8Cited by
9References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1995 |
| Grant date | Sep 2, 1997 |
| Priority date | — |
| Expiry date | Nov 22, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D37/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The addition of polymeric flocculant or other chemical dewatering modifier to a suspension flowing through a service line to a dewatering plant is controlled automatically in response to automatic determination of a filtration rate parameter. This may be determined using novel apparatus which includes a filtration assembly comprising a chamber with a filter element mounted across its open end and water sprays for washing the filter element. In one embodiment it is preferred to assist back-washing with an air purge while in another embodiment there are means for disassembling the filtration assembly to permit cleaning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.