Abstract: The invention relates to an optimized device for the regulation and measurement of the oxygen content or content of any other gas in composting platforms or platforms for the treatment of waste. The device comprises at least one offset cabinet (4) comprising one or several gas measurement probes (5), and in particular, at least one probe for the measurement of oxygen or CO2; a gas suction pump (6), a programmable controller (9) which can comprise electrovalves which are integrated inside said programmable controller; an air supply pipe (11) which links each of the electrovalves (8) to a tube for the collection of gas (10) which can be placed in a pile or piles of waste or compost (14).

Abstract: A pneumatic pumping device for pumping liquids such as landfill leachates and polluted liquids or thick matter includes a tubular body (1) forming a pump body and defining a cylindrical main chamber (2) in the upstream and downstream ends of which respectively emerge an inlet (3) and outlet (4) for the liquid to be pumped. The pneumatic device further includes a sleeve valve (7) arranged in front of the inlet to control the passage of the liquid to be pumped through the orifice, elements (8) for controlling the opening and closure of the sleeve valve with a compressed gas, a delivery pipe (9) passing through the outlet and extending inside the tubular body over the major part of the length thereof, and elements for supplying the main chamber with compressed gas.