The Zenit range includes disc-shaped membrane and tubular air diffusers. Both models are fitted with high-quality membranes with perforation ensuring high oxygen transfer with low pressure drop, minimising the relative energy consumption. Disc-shaped diffusers can be fitted with integral ball check valves.
Zenit is able to design the most efficient solution for the customer's specifications, and supply the complete aeration system, including detailed assembly plans.

Operating mode

During operation, the membrane inflates to open the tiny holes and allow the air to flow out in the form of fine bubbles. When the blower stops, the membrane deflates and the tiny holes close to prevent all risk of liquid inflow. What's more, the central part, free from holes and specially shaped, acts as a check valve.

Application

Membrane air diffusers are generally used in water treatment and purification processes where slurries have to be aerated to activate biological organic matter oxidation and nitrification processes.
They are also used in pre-aeration and aeration processes in oxidation tanks and aerobic digestion plants for industrial and civil sludges.