Method and device for the anaerobic purification of a slurry...

Details Method and device for the anaerobic purification of a slurry... Method and device for the anaerobic purification of a slurry...

2005-01-11

2005-01-11

Prince, Fred G. (Department: 1724)

Liquid purification or separation

Processes

Treatment by living organism

C210S629000, C210S221100

Reexamination Certificate

active

06841072

ABSTRACT:
Method and apparatus for the anaerobic purification of slurry which contains organic constituents. Slurry which is to be treated is fed periodically or continuously to a mixture-filled, substantially closed reactor (2), while the slurry is forcibly mixed with mixture (3) from the reactor. The mixture in the reactor is subjected to upward flow through it and to a hydrolysis process. The mixture is subjected to floatation by injection of a low-oxygen gas, such as biogas which originates from the reactor, and the floating layer of solids which is formed in the process is returned to the mixture in the reactor, while the low-particle liquid which is formed in the process is discharged as effluent.

REFERENCES:
patent: 4253949 (1981-03-01), Hines et al.
patent: 4780415 (1988-10-01), Ducellier et al.
patent: 4948509 (1990-08-01), Stack
patent: 5409610 (1995-04-01), Clark
patent: 5516434 (1996-05-01), Cairo et al.
patent: 6592751 (2003-07-01), Haridas

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