Aerated Stabilization Basins

May 29, 30 2024 Webinar, 8:30am - 10:30am and 11:30am - 1:30pm for all days (PDT) - 8 hours Total, 0.8 CEUs

This course is for operators, technicians, engineers and managers of aerated stabilization basins. Biological treatment concepts for ASBs will be reviewed. Effluent treatment plant microbiology (filamentous and non-filamentous) will be related to ASB performance. Management and operation of the key control elements for ASBs will be discussed.

It is operations oriented providing practical information for day-to-day operation. Attendees will participate presenting their operational approaches to various topics such as nutrients, aeration and basin sludge removal.

Review of Wastewater Treatment

° Composition of Wastewater - types of solids, organics
° Preliminary Treatment - screening, equalization
° Primary Treatment - settleable solids vs. suspended solids removal
° Secondary Treatment - conversion of organics, solids capture

Primary Treatment

° Solids Capture and Efficiency
° Negative Impacts from Primary on Secondary

Overview of Biological Treatment

° Overview of ASB Processes
° Bacterial growth - metabolism, respiration, growth phases
° Growth Pressures: Temp., pH, dissolved oxygen, nutrients, toxics, hydraulic loading

Microscopic Evaluation of ASBs

° Floc Structure
° Filament Abundance
° Protozoa and Other higher Life Forms

Aeration & Dissolved Oxygen Control

° Types of Aeration
° Monitoring, D.O. probes
° Mixing
° Causes of D.O. deficiency

Nitrogen & Phosphorus Management

° Sources of nutrients, nutrient requirements
° Monitoring residuals
° Nutrient deficiency
° Nitrification/denitrification

Managing ASB solids

° Wastewater characteristics
° ASB Design Impact on Solids
° Sludge Removal and Reduction

Sludge Quality Problems & Control

° Poor floc formation
° Foaming
° Toxicity
° Filamentous bulking (low D.O., low F/M, nutrient deficiency, septic/sulfide)
° Controlling bulking problems

ASB Troubleshooting

° High Effluent BOD and TSS
° Effluent Toxicity
° High Effluent Ammonia
° Foaming
° Rapid Sludge Accumulation

Instructor: Rick Marshall is a registered professional engineer and Grade VII (MA) certified operator with over 44 years of experience providing servics to hundreds of municipal, pulp & paper, food and beverage, chemical and refinery treatment systems. These services include:process training, process troubleshooting, treatment system optimization, treatment plant audits, plant design reviews foroperability, and O&M documentation (O&M manuals, SOPs)

Registration Fee: $250 USD for webinar series, Group discount of 20% for 2 or more from same plant