Therefore, PREVENTION of short-circuiting can provide the GREATEST SINGLE GAIN in pond performance.
When optimising the process potential of any flow-thru pond system, RESIDENCE TIME IS KING!
Residence Time is a measure of the average length of time a water molecule resides in a steady state reactor.
The goal is for the actual residence time to equal the theoretical residence time.
Theoretical Residence Time (Tr) = Volume V (m3) / Flow Q (m3/d)
For example: (V) 10,000m3 / (Q) 1,000m3/d = (Tr) 10days
If short-circuiting is allowed to occur the actual residence time can often be measured in MINUTES rather than DAYS!
Effective aerobic biodegradation of organic contaminants requires a healthy aerobic bacterial environment, and TIME.
Short-circuiting effectively steals time by allowing influent to take a beeline between the inlet and outlet and, in-doing-so, pass thru largely unimpeded.
At best the resultant effluent has incomplete breakdown of organic matter and at worst is totally untreated.
To make matters worse, the unwanted byproducts of short-circuiting are quiescence and subsequent deposition. Quiescence allows the formation of stagnant, putrid smelling zones.
Deposition halts aerobic activity and promotes anaerobic delay, rising sludge, and potential carryover of floating sludge at the outlet. Deposition also reduces pond volume.
aerdisc® is purpose-designed to prevent short-circuiting with a plume length of over 180m.
The strong horizontal velocity of aerdisc® is utilised to full-effect by positioning one unit at the inlet to entrain the influent in the oxygen-rich plume and another to bisect the outlet. Any flow trying to reach the outlet is sent back around again.
aerdisc® aerators create circulation within the pond to utilise the entire volume, PREVENT SHORT-CIRCUITING and MAXIMISE RESIDENCE TIME.
Contact Aeris Global to BOOST CAPACITY, EXTEND PLANT LIFE and DELAY EXPANSION of your plant.
QUALITY IS A CHOICE – Leading organisations choose aerdisc®
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