Two-layer compacted solid product for water potabilization and preparation method
US8361342B2 · kind B2 · utility
0Cited by
6References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2007 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Jan 14, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2305/14
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The present invention relates to a compacted solid product for water purification comprising:—at least a first layer comprising at least a coagulant/flocculant system comprising at least one polyvalent inorganic salt, at least one water-soluble cationic polymer and at least one high-molecular-weight anionic polymer,—at least a second layer comprising at least one disinfectant that releases active chlorine on contact with water, characterized in that said coagulant/flocculant system moreover comprises a sodium alginate. The invention also relates to the method for preparing such a product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.