It's all about
the
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aerdisc® Directional Aerator
aerdisc® sets new standards of oxygen transfer efficiency and has no capacity to harvest rag nor scour the floor of earthen lagoons.
The disc is designed to maximise collection and release of air, whilst generating horizontal velocity.
aerdisc® is designed to optimise conversion of mechanical energy into kinetic energy. It does not waste energy throwing water in the air.
The operating principle involves a continuous cycle of capturing atmospheric gases and dissolving oxygen as the partially immersed disc rotates.
What is directional aeration?
As the name suggests, directional aeration directs the discharge in a chosen direction, for a particular purpose. The most common purpose is generation of a specific flow pattern to prevent short-circuiting. This is the term given to flow taking the most direct path between the inlet and outlet. This reduces the HRT (Hydraulic Retention Time) and therefore limits the process potential of any flow-through lagoon.
However, the core logic is less obvious. Directional aeration focuses on mass displacement of water and rapid renewal of the contact area. Water with a low DO (Dissolved Oxygen) level is drawn in, charged with oxygen, and moved on.
This is critical because the highest rate of oxygen solubility occurs when oxygen deficit is greatest.
Oxygen Deficit
Oxygen deficit is the difference between actual oxygen content and the saturation value of the water. The greater the difference the greater the oxygen deficit.
However, the core logic is less obvious. Directional aeration focuses on mass displacement of water and rapid renewal of the contact area. Water with a low DO (Dissolved Oxygen) level is drawn in, charged with oxygen, and moved on.
This is critical because the highest rate of oxygen solubility occurs when oxygen deficit is greatest.
