Method for the use of polyhydroxyalkanoate levels to maintain bioreactor health
US6991931B2 · kind B2 · utility
9Cited by
4References
4Claims
0Family size
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Key dates
| Filing date | Jan 21, 2004 |
| Grant date | Jan 31, 2006 |
| Priority date | — |
| Expiry date | Jun 11, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2800/52
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method has been developed to maintain the health of an activated sludge environment in a wastewater process comprising monitoring the levels of polyhydroxyalkanoates (PHA) produced as an indicator of bioreactor health and regulating the concentration of feed nutrients and nitrate to maintain bioreactor health. In general, levels of PHA in excess of about 15% to about 20% dry weight of the biomass is an indication that the biocatalytic efficiency of the wastewater treatment process is impaired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.