Abstract: A flotation device having a flotation tank for receiving liquid to be purified, a saturator for receiving a pressurized liquid-gas mixture and at least one feeder. A line leads from the saturator to the feeder through which the pressurized liquid-gas mixture may be introduced into the flotation tank. The feeder includes a flow channel that has different flow cross sectional areas along the extension thereof. The flow channel may be a Venturi nozzle.

Abstract: The disclosure relates to an installation for processing and/or using process liquid, comprising at least one first installation section which comprises at least one heat exchanger for heating the process liquid. The heated process liquid can be guided directly or indirectly to a second installation section for processing and/or use. The invention is directed to the problem of providing an installation by means of which the wear and tear of comminution mechanisms, in particular for frozen, cold or tough biomass, can be reduced in a cost-effective and environmentally friendly manner. The installation is characterized in that the second installation section comprises at least one washing, soaking and/or thawing booth device for treating biomass using the warm process liquid.

Abstract: A flotation device having a flotation tank for receiving liquid to be purified, a saturator for receiving a pressurized liquid-gas mixture and at least one feeder. A line leads from the saturator to the feeder through which the pressurized liquid-gas mixture may be introduced into the flotation tank. The feeder includes a flow channel that has different flow cross sectional areas along the extension thereof. The flow channel may be a Venturi nozzle.