How Septic Aeration Works
In a conventional septic system, the microorganisms in the septic tank are
anaerobic (without oxygen).
|A septic tank aerator restores and repairs
septic system drain field problems by
introducing dissolved oxygen into the tank changing it from an anaerobic atmosphere to an aerobic atmosphere. This allows the more aggressive and effective aerobic
microorganisms to exist in the tank.
Under these conditions the treatment in the tank is greatly increased and
effluent leaving the tank is much cleaner which in turn takes the load off the soil treatment area. Also the cleaner effluent now contains
dissolved oxygen which in turn begins to consume the biomat that has grown so
thick it blocks the
effluent from being absorbed in the leach field.
RIGHT cross section of a drainfield being restored by SepticairAID
aerator. The clean effluent created by the SepticairAID aerator carries dissolved
oxygen into the drain field promoting the growth of aerobic bacteria. These aerobic
microorganisms are 50 times larger then anaerobic microorganisms and are 20 to 30
times more aggressive than anaerobic microorganisms in consuming solids.
Aerobic vs Anaerobic
The waste matter in a septic system breaks up when naturally occurring bacteria eat the organic material in waste water.
Adding a septic aerator promotes the development of naturally-occurring aerobic bacteria as a means of processing effluent.
These aerobic microbes are the cause septic aeration works so well. Microbes prefer aerobic conditions to anaerobic conditions.
As shown in image on the left, aerobic bacteria (microorganisms that consume both organic matter and oxygen) are fifty times
bigger and much more effective than anaerobic bacteria at consuming organic matter. When dissolved oxygen is introduced
(septic aerator), microorganisms in decaying organic matter devour oxygen dissolved in the water. The more dissolved
oxygen the septic aerator can introduce the more aerobic microbes can live to consume organic matter.
Since the biomat is alive, its balance can be upset.
Septic tank problems can result in an
excess of organic material (food) to the biomat organisms, causing excessive growth and, therefore,
reduced the ability of the waste water from the septic tank to penetrate the
biomat and enter the ground. In the saturated state the soils aerobic conditions no longer exist, and controlled breakdown
of the biomat by aerobic soil bacteria will no longer occur .
RIGHT Cross section of a failing drain field caused by
The biomat has grown too thick and dense, and the effluent sent to the drain field
will quickly and easily exceed the amount that can filter through the biomat.
The result is excessive ponding in the trenches, backflow into the septic tank
(and possibly also into the house), and surfacing of effluent above ground over the drain field causing
wet spots and rapid grass growth, in other words "septic system failure."
Which septic aerator is best?
Not all septic aerators are equal.
There is a list of assorted aerobic systems configured to change over your
anaerobic septic system into an aerobic system, differing greatly in cost and
operation; even so, in theory each aerobic systems deliver the same basic common
purpose. Air, compressed through a pump, is fed through a diffuser in an attempt
to introduce dissolved oxygen into the wastewater.
To Learn More About What Cause Septic Problems Visit These Related Topics
• Septic Problems: An overview of septic problems and what they mean to the homeowner.
• Septic Tank Problems: Understanding septic tank principles, common septic
tank problems, signs of septic tank problems and diagnosing septic tank problems
• Cesspool & Seepage Pit Problems:
An overview of Cesspool & Seepage Pit and the differences between the two.
Diagnosing common Cesspool & Seepage Pit problems and solutions.
• Drain Field Problems: Understanding leach field and drain field
principles, common leach field problems, septic tank problems lead to drain field problems
that are easy to diagnose.