System for injecting a fluid under pressure into a tank of effluent uses nozzles passing through bottom of tank at an angle and having vertical outlet ends

摘要

The injection system (1) consists of one or more nozzles (10) passing through the bottom slab (30) of a tank so that their ends (11, 12) project from the lower (31) and upper (32) surfaces. The lower ends (11) are connected to a pressure fluid feed system (4), while their upper ends (12) project into the effluent (2) and are chamfered so that their outlets (5) are vertical, producing a flow that is in the same direction as the circulation in the tank. The upper end of each nozzle can be protected by a deflector.