Process for removal of trihalocarbons from water
US4725361A · kind A · utility
5Cited by
6References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1986 |
| Grant date | Feb 16, 1988 |
| Priority date | — |
| Expiry date | Sep 26, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J20/183
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Water contaminated with a trihalocarbon is passed through a first or second bed containing particles of an activated composite adsorbent comprising alumina and zeolite. The trihalocarbon is adsorbed onto the particles, thereby reducing trihalocarbon concentration in the water. The adsorbed trihalocarbon is reacted with air or steam at an elevated temperature in order to regenerate the adsorbent particles for reuse. Gaseous HCl produced in the reaction with air or steam may be adsorbed in a third bed containing adsorbent agglomerates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.