Water treatment process
US5453201A · kind A · utility
14Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1994 |
| Grant date | Sep 26, 1995 |
| Priority date | — |
| Expiry date | Jan 14, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/911
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A water or wastewater purification process is described for reducing selenium and arsenic concentrations in contaminated water or wastewater streams. Iron loaded cation exchange resins, when contacted with contaminated water or wastewater streams are effective to form immobilized complexes with selenite and arsenate contaminants. The iron loaded resins can be easily regenerated by sequential treatment with acid and a solution of a soluble iron salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.