Sludge treatment process
US7279099B2 · kind B2 · utility
4Cited by
1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2005 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | Jul 19, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/20
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method utilizing chlorine dioxide and nitrous acid or other non-charged chemical species for the treatment of biosolids to destroy pathogens is provided. The method uses chlorine dioxide to modulate the ORP of the matrix, acidification of the sludge (biosolids) to a pH of less than 4.0, and provides for the addition of nitrous acid for enhanced disinfection in a closed system to prevent volitalization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.