Aeris Global engineers challenged the norms of partially immersed directional aeration when developing aerdisc® and asked the question: –
“Why can’t we expose air-to-water instead of water-to-air?”
The result is a unique disc profile allowing four phases to occur simultaneously as the disc rotates.
- Capture
- Displace
- Diffuse
- Discharge
aerdisc® is designed to diffuse air in water as its primary means of oxygen transfer.
It has 10 discs, each with 24 air pockets, therefore when rotating at 69rpm, 16,560 pockets of air are displaced by water every minute!
Former horizontal shaft technologies such as brush and cage aerators subscribe to the theory of diffusing water in air by creating a vertical splash to increase the total surface area of water exposed to air.
aerdisc® specifically avoids throwing water vertically because every watt of energy wasted lifting water is a watt of energy lost to generating horizontal velocity, this being a primary goal of directional aeration.
Directional aeration focuses on mass displacement of water and rapid renewal of the contact area. Water with a low DO level is drawn in, charged with oxygen, and moved on. This is critical because, in wastewater, the highest rate of oxygen solubility occurs when oxygen deficit is greatest.
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.
Therefore, the primary task of any high-functioning directional aerator is continuous and rapid renewal of the contact area because the rate of oxygen transfer is inversely proportionate to DO concentration.
With aerdisc®, it’s all about the refresh!
QUALITY IS A CHOICE. Leading organisations choose aerdisc®