Articles Authored by Dan Theobald / Published on “Water Online”:

Recommendation by the Editor:

“Dan has been an extremely valued asset to me and my work as chief editor of Water Online. He leverages his considerable consulting and training expertise to create content with true impact. His “Math Solutions” series — tutorial articles supported by video demonstrations — are consistently well-executed and high-performing. He is helpful, knowledgeable, and a pleasure to work with.”

Kevin Westerling

Chief Editor, Water Online


Articles Published on “Water Online”:

-45- 03/15/2022-Math Solutions Explained: Calculate Food-to-Microorganism (F-M) Ratio

-44- 09/23/2021-Math Solutions Explained: Converting To Gallons Per Minute


-44- 08/23/2021-Math Solutions Explained: Biochemical Oxygen Demand (BOD) Mg/L

-43- 08/03/2021-Math Solutions Explained: Pipe Volume Gallons

-42- 07/12/2018-Benefits Of Remote Access To Primary Wastewater Treatment

-41- 01/10/2018-10 Most Popular Step-By-Step Procedure Calculations Videos of 2017

-40- 05/02/2017-Flow Velocity Calculations

-39- 03/28/2017-Helpful Math Hints And Calculations

-38- 02/15/2017-Certification Examination Prep Calculations

-37- 01/06/2017-Energy Dollar Savings Calculations

-36- 11/30/2016-Hydraulic Loading Calculations


-35- 11/02/2016-Alkalinity Calculations


-34- 10/04/2016-Mixed Liquor Suspended Solids (MLVSS) Calculations


-33- 09/07/2016-Sludge Age Process Control Calculations


-32- 08/05/2016-Activated Sludge Process Control Calculations


-31- 07/07/2016-Pumping Calculations


-30- 05/27/2016-Combining Concentrations Calculations


-29- 05/04/2016-Efficiency And Recovery Calculations


-28- 03/08/2016-More Volume Calculations


-27- 02/16/2016-Mean Cell Residence Time (MCRT) Calculations


-26- 01/06/2016-Poundage Calculations


-25- 12/02/2015-Additional Pump Performance Calculations


-24- 10/22/2015- Math Solutions-Activated Sludge 2


-23- 09/09/2015-Real Life Wastewater Calculations


-22- 08/21/2015-Replenish Depleting Groundwater


-21- 08/06/2015-Wet Well Flow Rate Calculations


-20- 06/29/2015-Math Solutions-More Conversion Calculations


-19- 06/12/2015-Drinking Water Test with Al Roker & Stephanie Abrams


-18- 05/26/2015-Math Solutions-Conversion Calculations


-17- 04/22/2015-Earth Day Outreach: Insights on Water Conservation And Quality


-16- 03/23/2015-Math Solutions: Controlling Secondary Treatment


-15- 02/12/2015-Math Solutions Simulating Jar Test Results


-14- 01/09/2015-Math Solutions Most Popular in 2014


-13- 12/01/2014-Math Solutions: Load Calculations


-12- 10/28/2014-Math Solutions: Poundage Calculations


-11- 09/26/2014-Pump Efficiency Calculations


-10-09/13/2014-Math Solutions: Volume Calculations


-09- 09/13/2014-Math Solutions: Volume Calculations


-08- 08/04/2014-Math Solutions: Flow Rate Conversions:


-07- 07/10/2014-Math Solutions: Waste Activated Sludge Calculations:


-06- 06/17/2014-‘Math Solutions’ for Wastewater Operator Certification:   


-05- 03/25/2014-Storing, Handling, or Transporting Substances:   


-04- 12/03/2012-Wastewater-pH Balanced for Treatment:


-03- 05/15/2013-Three Overlooked Tasks at WWTPs:  


-02- 12/03/2012-Wastewater-pH Balanced for Treatment:


-01- 05/07/2013-Procedures and Technologies for Water Related Efficiency: