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Energy-Efficient Mixing: Large Air Bubbles in Anoxic Zones for Enhanced Denitrification

by Erik Rumbaugh | Jul 16, 2025 | Biological Nutrient Removal

Using large air bubbles to mix activated sludge in an anoxic zone while maintaining low redox (oxidation-reduction potential) is a strategy employed in wastewater treatment to achieve denitrification. Here’s a breakdown of why this approach is effective:...

From Free Floaters to Organized Communities: How Bacteria Become Floc or Biofilm in Wastewater Treatment

by Erik Rumbaugh | Jul 10, 2025 | Uncategorized

In the bustling microcosm of a wastewater treatment plant, bacteria don’t just float around aimlessly—they evolve, interact, and build structured communities that play critical roles in purification processes. Two major forms of bacterial aggregation dominate: flocs...

Favoring PAOs Over GAOs in Wastewater Treatment

by Erik Rumbaugh | Jul 1, 2025 | Biological Nutrient Removal, Wastewater Troubleshooting

As the temperature rises during the summer months, wastewater treatment operators often face a hidden biological battle—Polyphosphate-Accumulating Organisms (PAO) versus Glycogen-Accumulating Organisms (GAO). In Enhanced Biological Phosphorus Removal (EBPR) systems,...

MBBR vs. Granular Activated Sludge: Key Differences in Wastewater Treatment

by Erik Rumbaugh | Jun 20, 2025 | Whitepaper

Both Moving Bed Biofilm Reactor (MBBR) and Granular Activated Sludge (GAS) systems are advanced wastewater treatment technologies that have increased biomass density than conventional activated sludge, their distinct operational principles lead to significant...

Heterotrophic Nitrification: A Potential Game-Changer in Environmental Biotechnology

by Erik Rumbaugh | Jun 12, 2025 | Biological Nutrient Removal

Ammonia oxidation is a cornerstone of the global nitrogen cycle, traditionally attributed to a specialized group of chemoautotrophic bacteria. However, a fascinating and increasingly recognized process called heterotrophic nitrification is performed by a wide range of...
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Recent Posts

  • Role of Microbial Diversity in Biological Wastewater Treatment
  • The Role of Macro & Micro Nutrients in Biological Wastewater Treatment
  • Understanding Deflocculation in Wastewater Treatment
  • Understanding Endogenous Phase Biomass in Wastewater Treatment: The Hidden Costs of Old Sludge
  • Maximizing Nitrification Efficiency in Cold Climates: The Advantages of MBBR Retrofits for Wastewater Treatment Plants

Recent Comments

  1. SarahK on Preparing for Winter Wastewater Operations: The Sludge Age Balancing Act
  2. Erik Rumbaugh on Paracoccus: Important organisms for denitrification and sulfide oxidation in wastewater treatment systems
  3. Marco Meade on Paracoccus: Important organisms for denitrification and sulfide oxidation in wastewater treatment systems
  4. Erik Rumbaugh on Energy-Efficient Mixing: Large Air Bubbles in Anoxic Zones for Enhanced Denitrification
  5. Ryszard on Energy-Efficient Mixing: Large Air Bubbles in Anoxic Zones for Enhanced Denitrification

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