Bio scrubbers are used for biological treatment of waste and exhaust gases. The adsorption of organic emission components and of hydrogen sulphide and ammonia are the main application areas. For these purposes, a physical gas scrubber is combined with a biological aeration unit.
First, the raw gas is brought into contact with a scrubbing solution in the absorber. In a second step, the pollutants that have been converted in the scrubbing solution are decomposed into carbon dioxide and water by microorganisms in a regeneration reactor. This reactor corresponds to the aeration tank in waste-water treatment. The nutrients required for bacterial growth as well as acids and alkalis are dosed in to achieve the optimum pH value.
Upstream gas scrubbers prevent aggressive harmful substances in the waste gas from damaging the microorganisms used for treatment.
Application areas: Adsorption of organic emission components
Likusta bio scrubbers can be used at air pollutant concentrations of more than 100 mg/m3 – depending on the water solubility of the pollutants.
We have experience with the scrubbing of the following groups of substances
Phenols
Sulphur compounds
Carboxylic acids and carboxylic acid esters
Aldehydes
Alcohols
Our systems are used by our international customers from a wide range of industries including:
Waste-water treatment plants
Composting plants
Food and feed industries
Animal rendering plants
Foundries
Painting facilities