Projects

Problems:

• Seasonal fish deaths

• Excessive nutrients

• Odor

Results:

• No mass fish kill

• Increased water clarity

• Reductions of nutrients

• Chlorophyll-a down 80%

• Problems:

• Nutrients

• Maintenance requirements of disc filters

• Results:

• Total Nitrogen down 85%

• Total Phosphorus down 45%

• Maintenance of disc filters greatly reduced

• Eliminated past issues with clogging

• No chemical use required during the treatment period

• Increase the quality of influent

• Improved process flow

• Reduced maintenance on downstream equipment

• Reduce energy cost

• Decrease Greenhouse Gas emissions

• Problems:

• Excessive nutrients that promote eutrophication

• Results

• Phylum Cyanophyta concentration down 83%

• Reduction in microcystin

• Phylum Heterokontophyta (Diatoms) up 65%

• Positive indicator of environmental health

• Problems:

• Sludge build up

• Odor

• Ongoing chemical cost for phosphorus reduction

• Results:

• Amononia decreased by 79%

• E. coli 10-fold decreased 88%

• Net decrease of sludge; capacity increase of ~3%; ~1581 m3 of sludge digestion-situ(2022) 

• Potential OPEX savings greater than $65,000

• Decrease in Ferric sulfate used; down 24,000kg (2023)

• Increased lifespan of municipal asset

• Odor eliminated

• Decrease of phosphorus; prevented from exceeding compliance limit compared to the last 5 years (2018 to 2022)

• Problems:

• Low Dissolved Oxygen

• Maldours

• Low ORP and sludge buildup

• Results:

• Dissolved Oxygen Increase

• Malodours reduced

• In-situ sludge digestion initiated 

• Increase in ORP