Treatment of oxidable gas generated from waste at a dumping area

A dumping area structure comprising:

• a waste layer generating gas;
• a sealing layer preventing the absorption of water covering said waste layer;
• and
• at least one overlaying material layer overlaying said sealing layer,
• wherein the sealing layer is provided with at least one aperture through which the gas penetrates;
• and
• wherein at least one gas flow controller is arranged on at least one of a top and to sides of the aperture for spreading the gas in a lateral direction to the at least one overlaying material layer, in which a biological oxidation of the gas occurs.

A method for treating oxidable gas generated from waste at a dumping area, comprising the steps of:

• generating gas in a waste layer;
• covering the waste layer with a sealing layer to prevent absorption of water into said waste layer;
• covering said sealing layer with a drainage layer;
• covering the drainage layer with a layer for biologically oxiding the gas;
• and
• diffusing the gas through an aperture in said sealing layer and then laterally through said drainage layer into said layer for biologically oxiding the gas.