A tube diffuser is an aeration device used primarily in wastewater treatment and aquaculture to introduce air and oxygen into liquids through small, uniform bubbles. This process is crucial for supporting aerobic microorganisms that break down organic pollutants, thereby improving water quality and treatment efficiency
TUBE DIFFUSER
A tube diffuser is
an aeration device used primarily in wastewater treatment and aquaculture to introduce air and oxygen into liquids through small, uniform bubbles. This process is crucial for supporting aerobic microorganisms that break down organic pollutants, thereby improving water quality and treatment efficiency.
How They Work
Air is supplied to the diffusers via a piping system connected to a blower. The diffusers are typically installed at the bottom of a tank or lagoon.
Air Distribution: Compressed air flows into the hollow interior of the tube diffuser.
Bubble Formation: The air is forced out through tiny perforations or slits in a flexible membrane (commonly EPDM or silicone) that surrounds a support pipe.
Oxygen Transfer: These micro-sized bubbles rise slowly through the water, creating a large surface area for oxygen to dissolve into the liquid. This maximizes the oxygen transfer efficiency (OTE).
Backflow Prevention: When the air supply is stopped, the elastic membrane contracts and seals the pores, preventing water from flowing back into the air supply lines and clogging the system
ube diffusers are primarily categorized by the size of bubbles they produce and the materials used.
Fine Bubble Tube Diffusers: These produce very small bubbles (typically less than 3 mm in diameter) that offer high oxygen transfer efficiency and energy savings, making them ideal for biological treatment processes in sewage and industrial effluent treatment plants.
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