Wastewater treatment bacterial additive
US4673505A · kind A · utility
7Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 4, 1986 |
| Grant date | Jun 16, 1987 |
| Priority date | — |
| Expiry date | Mar 4, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/50
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The use of an inorganic azide compound as an inhibitor for a wastewater treatment bacterial additive composition. The inorganic azide compounds used in the invention serve to confer a useful life for the bacterial additive composition, yet a relatively short reactivation time which is of great advantage in wastewater treatment systems with short detention times. The inorganic azide compounds employed as an inhibitor in the bacterial composition additives of the invention include alkali metal azides, alkaline earth metal azides, lead azide and hydrazoic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.