The Pro Flo Wastewater Treatment Plant is similar to large municipality sewage treatment plants. It uses an extended aeration activated sludge process. This type of treatment depends primarily on the use of air. When air is introduced to the wastewater, it promotes the growth of aerobic bacteria and other microorganisms that break down the organic material found in regular household sewage.
Raw, unsettled waste/water from your home enters directly into the pretreatment tank. Inside the pretreatment tank, the solids separate from the liquid and the liquid flows into the aeration chamber. Inside the aeration chamber, simple hydraulic displacement is accomplished by the introduction of air. Air is introduced into the aeration chamber by passing from the aerator motor through the diffuser bar and into the system. This air promotes the growth of aerobic organisms in much larger amounts than would naturally occur. It is these aerobic organisms (bacteria) that break down the organic material. As the wastewater leaves the aeration chamber, it enters the "quiet zone" better known as the clarifier. No mixing occurs inside the clarifier.
In the clarifier, any "leftover" solids separate from the liquid and settle to the bottom of the clarifier. This solid material is called sludge. Sludge contains dissolved oxygen and the bacteria it contains are activated by the oxygen. This activated sludge is returned to the aeration chamber where it is mixed and digested again. The sludge mixes with the incoming wastewater and this mixture of returned sludge, wastewater, and dissolved oxygen is referred to as mixed liquor. The mixed liquor flows back into the clarifier, the solids separate and return once again to the aeration chamber. This never-ending cycle produces a clear, odorless, high quality effluent that is ready to be released to the environment.