BTA - Mixing System for the Anaerobic Digestion
During the BTA® Process thorough mixing is ensured by blowing compressed biogas into the fermenter. After condensate separation the biogas generated is compressed up to the required pressure by a rotary compressor and blown into the suspension at the bottom of the fermenter through gas lances. Thus, a convection current is set up, which rises in the centre of the fermenter, moves outward at the suspension surface, and descends along the tank walls.
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Thorough mixing of the digestible substances within the fermenter is a prerequisite for:
- maximum degradation of organic substances
- providing constant conditions within the fermenter with repect to temperature and chemical properties
- avoiding biogas foam formation as well as sedimentation of organic solid materials
Another advantage of gas convection is the lack of moving parts within the fermenter, resulting in far less susceptibility to failure.
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