Method of preparing inorganic macromolecular flocculant by polymerizing silicate and zirconium chloride
US11492263B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2017 |
| Grant date | Nov 8, 2022 |
| Priority date | — |
| Expiry date | Sep 17, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/007
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for preparing inorganic macromolecular flocculant by polymerizing silicate and zirconium tetrachloride is disclosed and relates to the field of feed water treatment. The invention aims at the problem of poor efficiency of inorganic low-molecular zirconium salt flocculant in treating low-temperature raw water and blockage of flocculation, by copolymerization of polymeric zirconium chloride and polysilicic acid, the Si—O—Zr bond was formed to increase the molecular chain of the flocculant to strengthen the function of adsorption bridge and net capture sweep. Under low temperature, the flocculant can remove organic pollutants effectively, and the size of flocs formed is large and easy to precipitate. The invention is particularly suitable for the treatment of raw water at low temperature, low turbidity and high organics by enhanced coagulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.