Water filter apparatus incorporating walnut shell filter media and a draft tube system
US8747667B2 · kind B2 · utility
2Cited by
9References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2009 |
| Grant date | Jun 10, 2014 |
| Priority date | — |
| Expiry date | Oct 25, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates generally to a system and method for treating wastewater in a filter media apparatus having a draft tube system. The filter media may be walnut shell media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.