Filter media, method for oxidizing and removing soluble iron, method for removing and inactivating microorganisms, and particulate filter aid
US4361486A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1981 |
| Grant date | Nov 30, 1982 |
| Priority date | — |
| Expiry date | Apr 28, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/64
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter media is provided which comprises an amount of particulate immobilized in a substantially inert porous matrix. A least a portion of the particulate surface has thereon a divalent metal peroxide. The metal peroxide is magnesium peroxide or calcium peroxide, preferably magnesium peroxide. The filter media is preferably used for oxidizing and removing soluble iron and manganese from an aqueous fluid. The filter may also be used for removing and inactivating microorganisms from fluids, e.g. aqueous fluids. Particulate filter aid having coated or adsorbed on the surface the aforementioned metal peroxide may be used as the particulate in the filter media, as well as the metal peroxide in particulate form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.