Separation & Clarification Resources

  1. CleanFlo™ Monoscreen® Case Study 12/22/2014

    When the polar bears at the Brookfield Zoo were introduced to their new habitats at the Great Bear Wilderness, they had no idea how much more fulfilling their life would become.

  2. Sturbridge POTW: Greater Capacity For High Flow Events, Enhanced Clarification For New Regulations 12/16/2014

    Sturbridge, Massachusetts historically suffered from periodic blooms of filamentous bacteria that caused bulking in the secondary clarifiers of their three activated sludge package plants.

  3. Concord, Massachusetts WWTP - A Low-Cost, 20-Year Solution To Ever-Tightening Phosphorus Limits 12/16/2014

    Prior to 2007, Concord, Massachusetts wastewater treatment plant operated under a NPDES permit that allowed a seasonal phosphorus limit of 0.7 mg/L. But with the issuance of a new five-year permit with a phosphorus limit of 0.2 mg/L and the probability that future limits could reach as low as 0.05 mg/L, Concord needed a treatment solution that would be reliable and cost-effective today and over the long term.

  4. Shear Power: How To Defeat FOG Once And For All 9/17/2014

    Overcome the problem of fats, oils, and grease (FOG) by understanding it and choosing the right equipment.

  5. Math Solutions: Waste Activated Sludge (WAS) Calculations 7/10/2014

    Water Online’s “Math Solutions” series, presented by wastewater consultant and trainer Dan Theobald (“Wastewater Dan”), provides an understanding of the sometimes difficult calculations involved in achieving wastewater operator certification.

  6. A New Paradigm In Aeration Technology 5/13/2014

    The DO2E organization sprang from one individual’s attempt to solve an aeration problem in a fish hatchery and realizing that his device to do so had many other applications as well. This device broke up algal blooms as well as aerating, and it was only a short step to modify it into breaking up FOG (fats, oils, and grease) deposits in grease traps and lift stations. This device was patented, thus DO2E was born.

  7. Instrumentation In Activated Sludge: Past, Present, And Future 4/21/2014

    After a century of operation, the activated sludge process is still being fine-tuned to meet today’s challenging treatment and efficiency targets.

  8. Shortcut Nitrogen Removal: The Next Big Thing In Wastewater 4/21/2014

    A vast improvement on conventional biological nutrient removal could save the wastewater treatment industry untold millions.

  9. Biological Treatment 101: Suspended Growth Vs. Attached Growth 3/5/2014

    Optimal biological behavior is the linchpin of successful secondary wastewater treatment. Here’s an overview of two popular methods for gaining “bug control.”

  10. Go With The (Change Of) Flow: 3 Overlooked Tasks At WWTPs 5/15/2013

    There are certain requirements incumbent upon the wastewater operator when the volume and nature of waste coming into the wastewater treatment plant changes — first and foremost of which is recognition. That’s the easy part...