 |
The Dunlap Wastewater Plant operates a 0.934 mgd extended aeration
activated sludge plan with chlorination / dechlorination followed by land application of
sludge. |
 |
The aeration tanks are part of the biological process. The air enters the
tank through the defusers in the bottom traveling up to the surface, supplying the
microorganisms with free dissolved oxygen. The air also creates a continuous mixing in the
tank which brings the microorganisms in contact with their food source. |
 |
In the claifiers the velosity of the water is reduced for separation and
settling of the solids. The heavier particles are regulated back to the aeration tank, and
the clean water is then disinfected and discharged. |
 |
The digester tanks are the final treatment process for the solids. Aerated
digesters, such as these, are operated similar to the aeration tanks, in that air is
induced with diffusers. The air is then turned off for separation of solids. The clear
water is returned back to the system. Air is again added until proper digestion. Then the
biosolids are used in land application fertilizer. |
