Marshall Environmental Training and Consulting Group, Inc., (METC Group)

Troubleshooting Activated Sludge Operations Training Webinar - November 18, 20, 2025

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This webinar ((multiple 2-hr sessions - 2 sessions each day) is for attendees to evaluate their treatment system and develop a list of opportunities to improve and optimize their plant operation. This course is for experienced operators and managers of activated sludge plants. A microscopic floc assessment including filament identification should be conducted prior to the workshop so you know the present sludge quaility conditions that can be applied in the workshop. Topics include: symptoms, causes and cures for filamentous bulking, slime bulking and foaming; selectors and step feed; operating secondary clarifiers, developing operating plans and troubleshooting charts. CEUs will be awarded (0.7). On-demand recordings can be made available in case sessions(s) ar emitted due to work or other conflicts.
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Workshop topics include:

  • Biological Process Monitoring
  • Operating Secondary Clarifiers
  • Managing Nutrients
  • Aeration Problems & Dissolved Oxygen
  • Fine-tuning Your Process Control Management Plan
  • Use of Selectors and Step Feed

Troubleshooting Sludge Settling Problems

  • Poor floc formation
  • Foaming
  • Rising sludge
  • Toxicity
  • Rapid settling, turbid effluent
  • Filamentous and slime bulking
  • Low D.O. bulking
  • Low F/M bulking (prduction shutdown, low production)
  • Nutrient-deficient bulking
  • Septicity (organic acids/sulfide) bulking