Process for protection of biological nitrification systems
US4693827A · kind A · utility
14Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 20, 1986 |
| Grant date | Sep 15, 1987 |
| Priority date | — |
| Expiry date | Mar 20, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/903
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method for accelerating the startup of biological nitrification systems for wastewater treatment and preventing or reducing the effects of toxic or inhibitory materials or excursions of pH, temperature or dissolved oxygen upon nitrifying organisms. A rapidly metabolized soluble or miscible organic material containing little or no nitrogen is added to the carbon-consuming step of the process. Heterotrophic organisms consume the added material together with soluble ammonia to generate additional organisms. The soluble ammonia concentration in the wastewater is reduced to a non-toxic, less toxic, or less inhibitory level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.