Method for the removal of submicron particulates from chlorinated water by sequentially adding a cationic polymer followed by adding an anionic polymer
US7790042B2 · kind B2 · utility
9Cited by
19References
30Claims
0Family size
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Key dates
| Filing date | Feb 15, 2006 |
| Grant date | Sep 7, 2010 |
| Priority date | — |
| Expiry date | Jan 29, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for removing submicron colloidal particulates, such as hydrocarbons, from water. The method includes first adding a soluble, cationic polymer, such as chitosan, a salt, or solution of chitosan to water containing the submicron particulates and a halogenating agent, followed by adding a soluble, anionic polymer or anionic salt to the water. The resulting flocs are filtered to remove the submicron particulates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.