Daniel Theobald Articles

  1. Math Solutions: Efficiency And Recovery Calculations 5/4/2016

    “Wastewater Dan” helps wastewater operators understand efficiency and recovery with more easy-to-apply mathematical templates.

  2. Math Solutions: More Volume Calculations 3/8/2016

    Water Online contributor Dan Theobald provides a second round of “Math Solutions” devoted to volume calculations (see the initial installment here). Based on 24-plus years of experience in training and consultation, tutorials from “Wastewater Dan” are designed to help the operator both in the field and while sitting for certification exams.

  3. Math Solutions: Mean Cell Residence Time (MCRT) 2/16/2016

    Mean cell residence time is defined as an expression of the average time (days) that a microorganism will spend in the activated sludge process — or how long sludge is in the system. It is a critical operating parameter in the biological treatment process, with impact on various other parameters and equations.

  4. Math Solutions: Poundage Calculations For Waste Stream, Tank Volume, And Percent (%) Solution 1/6/2016

    Water Online’s “Math Solutions,” presented by wastewater consultant and trainer Dan Theobald (“Wastewater Dan”), instructs operators on poundage calculations.

  5. Math Solutions: Additional Pump Performance And Efficiency Calculations 12/2/2015

    Wastewater consultant and trainer Dan Theobald (“Wastewater Dan”) closes the loop on pump performance.

  6. Math Solutions: Activated Sludge – No. 2 10/22/2015

    “Wastewater Dan” provides a second round of math solutions devoted to activated sludge calculation requirements.

  7. Math Solutions: Real-Life Wastewater Calculations 9/9/2015

    The ongoing “Math Solutions” series was designed to prepare operators for certification exams, which themselves are preparation for day-to-day treatment plant operations. But for this segment, Wastewater Dan reverses course and prioritizes “real life” ahead of the classroom.

  8. Options To Replenish Depleting Groundwater 8/21/2015

    It supplies drinking water for more than half of the total U.S. population and greater than 95 percent of the rural population. It helps grow our food because more than 60 percent of it is used for irrigation to grow crops. It's an important component in many industrial processes, and it’s a source to recharge lakes, rivers, and wetlands.

  9. Math Solutions: Wet Well Flow Rate Calculations 8/6/2015

    Water Online’s “Math Solutions” series, presented by wastewater consultant and trainer Dan Theobald (“Wastewater Dan”), instructs operators on a variety of calculations necessary for plant operations and operator certification. Here Dan tackles wet well calculations, with a bonus calculation for determining flow in cubic feet.

  10. Math Solutions: More Flow Rate Conversion Calculations 6/29/2015

    This edition of Water Online’s “Math Solutions” series, presented by wastewater consultant and trainer Dan Theobald (“Wastewater Dan”), instructs operators on flow rate conversion calculations.