Method for biological treatment of waste gases
AssigneeClair Tech B.V.
InventorSimon P. P. Ottengraf
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Abstract
Method for removal of malodorous and/or toxic components from waste gases by biological treatment of the same. Such removal is accomplished by passing the gas stream through a humidifying temperature conditioning section and then through a filter bed. The filter bed consists of a mixture of an organic biological active material, like compost, an inert fraction and additives for neutralization and organic buffening. Also disclosed is the inoculation of the filter bed with specific micro-organisms adapted to remove constituents of the gas stream which are difficultly biodegradable, e.g. methylenechloride.
Claims18
Method of biologically filtering gases containing pollutants, in particular industrial waste gases by a fixed bed type filter material containing a carrier material which has been provided with appropriate micro-organisms which are stationary on the surface of the carrier material, characterized in that the gases are initially water saturated prior to their entrance into the filter material by bringing the gases into intimate contact with water in such manner that the gases contain the quantity of water required for the micro-organisms, to optimally function, the water saturated gases are then directed into the filter material and passed through it, whereby the pollutants in the water saturated gas come in direct contact with the micro-organism on the surface of the carrier material.
Dependencies are inferred from the claim text.