Aerobic Systems:  What are they?

Aerobic treatment systems are an on-site sewage disposal systems that use aeration to treat wastewater and surface application to dispose of treated wastewater. Since aerobic treatment systems do not rely on subsurface absorbtion, they may be used in any type of soil.  They can also be used to replace subsurface systems that are failing due to high groundwater and/or poor soil.

 Components of an Aerobic System

An aerobic treatment systems consists of:  an equalization tank, an aeration chamber, a disinfection chamber, and surface application.  These components are used to treat, disinfect, and apply the wastewater.

1.  Equalization tank (aka trash tank) serves as the first stage of treatment where it separates solids from liquids (effluents) before the liquids flow into the aeration chamber.

2.  Aeration chamber:  Treatment of the effluent occurs in the aeration chamber when air is injected into the wastewater, which causes the natural bacteria to breakdown the organic material found in the wastewater. 

3.  Clarifier Chamber:  The wastewater then settles in the clarifier where the solids are separated from the liquids.

4.  Chlorinator where the clear effluent passes through the disinfection.

5.  Pump tank is used to transport the treated effluent to the surface application area.

6.  Aerator and pump.

7.  Control Center.

8.  Discharge pump.

For more information about an aerobic system go to the Department of Environmental Quality at www.deq.state.ok.us/ECLSnew/septic.htm then click on Aerobic Sewage Treatment Systems.

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