Anaerobic reactor for the removal of long chain fatty acids...

Details Anaerobic reactor for the removal of long chain fatty acids... Anaerobic reactor for the removal of long chain fatty acids...

2005-11-18

2010-12-14

Prince, Fred (Department: 1797)

Liquid purification or separation

Processes

Treatment by living organism

C210S194000, C210S197000

Reexamination Certificate

active

07850849

ABSTRACT:
The invention presented is an apparatus specifically designed for the high rate anaerobic treatment of (waste)waters with relatively high concentrations of lipidic compounds, referred to as the Inverted Anaerobic Sludge Blanket (IASB) reactor. Contrary to conventional anaerobic reactors, it avoids the need of sludge with good settling properties and exploits the problem of sludge flotation due to long chain fatty acid (LCFA) or biogas adsorption onto the sludge and/or biogas encapsulation by the sludge. Furthermore, it provides an increased specific sludge surface area for better LCFA degradation. It is fed from the top and is equipped with a separation step at the bottom. Reactor contents are thoroughly mixed by the novel combined action of a gas lift loop and a liquid recycle over the reactor. The reactor can be operated in continuous and sequential mode. Although it is specifically designed for lipid degradation, its application is not limited to this.

REFERENCES:
patent: 5616240 (1997-04-01), Sonnenrein
patent: 5942116 (1999-08-01), Clark et al.
patent: 7300584 (2007-11-01), Langhans et al.
patent: 7708885 (2010-05-01), Lanting et al.
patent: 2004/0025715 (2004-02-01), Bonde et al.
patent: 07-096298 (1995-04-01), None

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