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2. Aeration and mixing of biological purification basins
Aeration systems installed in biological treatment tanks have a dual purpose:
provide aerobic micro-organisms with the oxygen they need, usually borrowed from the air;
provide sufficient homogenization and mixing to ensure renewed contact between the living environment, the pollutants and the oxygenated water.
In most cases, these systems consist of a single device or a set of devices placed in a tank of a given volume and shape to perform both functions.
2.1 Surface aerators
Surface aerators can be divided into two groups:
slow-speed aerators ;
high-speed...
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Aeration and mixing of biological purification basins
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