Impurity removal process and apparatus
US5158686A · kind A · utility
14Cited by
26References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1991 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Feb 25, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/912
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A process and associated apparatus for removing contaminants such as heavy metals from contaminated water, waste water, sludge or flushed soil elutriates, or leachates. The remediation method utilizes a combination of chemical oxidation/reduction reactions and physical separation techniques employing a pseudofluidized bed and is carried out in a unitary reactor comprising zones for activation, flocculation and phase separation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.