Equipment for injecting a gas into a cesspool

US9731988B2 · kind B2 · utility

Assignees

• L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR
• Milton Roy Mixing · FR

Inventors

• Guillaume Beaudouin · Trappes, FR
• Robert Briend · Les Clayes-sous-Bois, FR
• Ulrich Butz · Erkelenz, DE
• Philippe Campo · Montigny-le-Bretonneux, FR
• Frédéric Savreux · Vittel, FR
• David Maret · Avon, FR
• Patrice Cognart · Vaux-le-Pénil, FR

Key dates

• Filing date: May 16, 2012
• Grant date: Aug 15, 2017
• Expiry date: Jul 24, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W10/10
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to floating equipment, for injection of a gas into liquid effluents or waste water, and more particularly of a gas rich in oxygen into a basin from the surface. The floating equipment has the following elements: a driving device, intended to be disposed over the liquid, provided with a vertical output shaft (8), equipped at its end with a propeller (6) immersed in the liquid; a pre-mixing device (5) comprising an injection device (7) positioned above or below a mobile aerator (9) with inclined blades, the propeller being situated at the end of the shaft, under the pre-mixing reactor.