Removal of grease and oil from particulate bed granules by backwashing with a detergent
US4032443A · kind A · utility
20Cited by
6References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1976 |
| Grant date | Jun 28, 1977 |
| Priority date | — |
| Expiry date | Jan 29, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/085
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Filtering solids from waste water liquids and cleaning, degreasing and restoring the filtering media through the use of cleaning compounds forced up through the filtering substances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.