Method for treating radioactive waste water
US8222475B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 13, 2009 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Mar 11, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/37
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method and apparatus for treating radioactive waste water containing contaminating ions, colloids and suspended solids having like (usually negative) charges preventing their precipitation. An electric current is passed through the waste water in an EC assembly to cause electro-coagulation of the contaminants and anodes of this assembly are made of a metal that dissolves to provide cations for neutralizing the negative charges and forming precipitates containing neutralized contaminants. Precipitates are then separated from waste water by an electro-magnetic or other filtering unit. The water pH and conductivity may be adjusted before the EC assembly and additives may be introduced into its effluent for enlargement of precipitate particles, improvement of filtration, improvement of dewaterability, and/or enhancement of magnetism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.