Free tools and downloads
Two free calculators for activated sludge operators, built by operators.
Activated sludge calculators
Enter your own plant numbers in each box and press Calculate. The math runs in your browser and nothing you enter is sent to us. Results are for training and screening and do not replace plant data review.
Disclaimer: These calculators are for educational purposes only and are provided without warranty of any kind. Use them at your own risk. Wastewater Solutions, Inc. is not responsible for decisions made from the results. Validate every result against your own plant data and judgment, and confirm any recommendation with a qualified engineer or your regulator before you act on it.
The example numbers in the boxes are hints only. Use the BOD that is applied to your aeration basin, and use the same sample points and units you use in your own process control.
Downloads
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