Method for the treatment of waste water with sludge granules

Details Method for the treatment of waste water with sludge granules Method for the treatment of waste water with sludge granules

2007-09-25

2007-09-25

Prince, Fred G. (Department: 1724)

Liquid purification or separation

Processes

Treatment by living organism

C210S615000, C210S617000

Reexamination Certificate

active

10527970

ABSTRACT:
The invention relates to a method for the treatment of waste water comprising an organic nutrient. According to the invention, the waste water is in a first step fed to sludge granules, after the supply of the waste water to be treated the sludge granules are fluidised in the presence of an oxygen-comprising gas, and in a third step, the sludge granules are allowed to settle in a settling step. This makes it possible to effectively remove not only organic nutrients but optionally also nitrogen compounds and phosphate.

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Beun, J. J., et al., “N-Removal in a Granular Sludge Sequencing Batch Airlift Reactor”, Biotechnology and Bioengineering, Oct. 5, 2001, vol. 75, No. 1, pp. 82-92.
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Beun, J.J., et al., “Aerobic granulation in a sequencing batch airlift reactor”, Water Research, 2002, vol. 36, pp. 702-712.

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