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Equalization Ponds

Keep the pond well-mixed and stay on top of odors...

Sign says Equalization Pond 1An equalization pond in front of a wastewater treatment plant acts as a shock absorber by temporarily holding excess inflow during rain events until the water can go through the treatment plant. 

For example, an equalization basin may be designed to hold eight million gallons of water when full at eight feet deep, but normally be operated with two million gallons in the pond at a depth of three to four feet, with one million gallons per day entering the pond and going through to the treatment plant. During a heavy rain, the equalization pond may quickly fill to the depth of eight feet and then, a few days later, be back down to three feet. 

Without thorough mixing, organic solids entering the pond will tend to settle to the bottom and over time, the anaerobic digestive processes at the bottom can create ongoing odor problems.  By keeping the organic solids and water thoroughly mixed (sand and silt withstanding), they are better moved through the reservoir into the plant with less settling.   This creates a smaller detention time for both the water & organic solids which in turn keeps the anaerobic process from ever gaining any odor-causing momentum. 

The unique designs and flexibility of Medora Corporation mixing equipment allows water to be drawn from the bottom of the pond (no matter the depth fluctuation) creating the much needed bottom to top mixing mentioned above.  This automatically allows for full mixing of the pond as it cycles through depth changes.  

 
A thorough, treatment-enhancing mix with no intake adjustments needed.

 

Learn more about Medora Corporation equipment below or  to discuss how we can help!