Method for purifying and biodeodorizing gas effluents
AssigneeOTV (Omnium de Traitements et de Valorisation)
InventorsChristophe Bonnin, Guy Martin, Gabriel Coriton
Life of this patent
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Abstract
A method for the purification and biodeodorizing of a gas effluent charged with pollutant matter is provided. The method includes the steps of passing the gas effluent through a bed of inert granular material used as a support for a biomass. The biomass includes bacteria, majority of which are autotrophic bacteria. Preferably the bacteria are in a form designed to degrade the pollutant material. The method includes the step of sprinkling the bed with a sprinkling liquid and recovering purified biodeodorized gas effluent. Preferably, nutrient elements for the biomass are supplied entirely by the sprinkling liquid, the gas effluent or a mixture thereof.
Claims24
A method for purifying and biodeodorizing a gas effluent charged with organic pollutant matter by abating H.sub.2 S, NH.sub.3 and CH.sub.3 SH;
- said method including the steps of:
- (a) passing gas effluent to be purified and biodeodorized through a bed of inert mineral granular material;
- the bed of inert mineral granular material including thereon a biomass comprising bacteria, a majority of which are autotrophic bacteria;
- (i) the autotrophic bacteria comprising bacteria which aerobically degrades organic pollutant matter;
- (b) sprinkling the bed with a sprinkling liquid comprising water and optionally nutrient;
- the sprinkling liquid having a pH within the range of 3 to 14;
- a pH gradient being established within the bed from the sprinkling liquid gas effluent, and degradation products;
- and H.sub.2 S, NH.sub.3 and CH.sub.3 SH are abated;
- (c) recovering purified and biodeodorized gas effluent from an outlet of the bed of inert mineral granular material;
- (d) said method being conducted such that all nutrients used by the biomass are supplied by the combination of the sprinkling liquid and the gas effluent;
- and,
- (e) said steps of passing gas effluent to be purified and biodeodorized through a bed of inert mineral granular material including a biomass thereon abates the pollutant matter by physical/chemical and biological processes.
Dependencies are inferred from the claim text.