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Article | REF: C5223 V2

Urban wastewater treatment - Extensive technologies and tertiary treatments

Author: Jean-Marc BERLAND

Publication date: August 10, 2024

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7. Free cultivation

The lagooning system used in France was designed by the part of INRAE then known as Cemagref.

7.1 Natural lagooning: principle

The treatment of domestic wastewater involves a process that requires the water to remain for a long time in a series of sealed basins arranged one after the other. In practice, it's common to find plants with three basins (figure 15 ). However, opting for a configuration that includes four, or even six basins, can enable more thorough and effective disinfection.

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