What is the function of trickling filters in the biological treatment of wastewater?
Answer
To provide a surface for biofilm where bacteria can work intensely
Trickling filters represent an evolution in treatment efficiency compared to traditional sand filters. By spraying sewage over coarse media like rocks, the system facilitates the formation of a biofilm. This biofilm is populated by bacteria that actively consume and break down organic matter in the wastewater as it passes over the media. This method allows for a much more intense biological degradation process within a smaller footprint, addressing the land-use limitations of earlier filtration models.
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