Hepa filter dissolution process
US5288434A · kind A · utility
4Cited by
5References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1992 |
| Grant date | Feb 22, 1994 |
| Priority date | — |
| Expiry date | Aug 21, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21F9/30
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A process for dissolution of spent high efficiency particulate air (HEPA) filters and then combining the complexed filter solution with other radioactive wastes prior to calcining the mixed and blended waste feed. The process is an alternate to a prior method of acid leaching the spent filters which is an inefficient method of treating spent HEPA filters for disposal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.