Digestion of waste activated sludge with algae
US9783442B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Sep 25, 2015 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | Sep 25, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/20
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Phagotrophic algae are used in connection with aerobic or anaerobic digestion of solids, especially waste activated sludge (WAS), to more efficiently digest solids and to meet, over a shorter period of time, volatile solids standards and specific oxygen uptake rate requirements as well as pathogen reduction requirements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.