By: Kevin Lynch

Design Flow: 24 MGD Average Daily Flow : 13.379 MGD Treatment Process: Activated Sludge Phosphorous Removal Method: Bio-P Influent Phosphorous Average: 6.65mg/L Effluent Phosphorous Average: 0.33mg/L Annual Budget: ~$17million

Phosphorous Accumulating Organisms

Use Phosphorous as Energy Storage

Produce Polyhydroxybutyrate (PHB)

Anaerobic Zone

PAO release Ortho-Phosphate

Aerobic Zone

Rapid Metabolization

Phosphorous rich Bio-mass

Dissolved Oxygen Oxygen Reduction Potential Ammonia, Nitrite, and Nitrate Ortho- Phosphate

Target Control Energy Issues

Targets

Zone #2= -400

Cell #1= > +50

Cell #2= > +100

Cell 2

Cell 1

5 4 3 2 1 From the Primaries

Tracking the Conversion Nitrosomonas Nitrobacter

Twice Weekly Monitors

Phosphorous Sludge Age

Cell 1 Cell 2 Activated Effluent

Final Effluent

0.6 0.0 0.0 0.0

2.5 1.5 1.8 2.0

Checking Sampling Cleaning Calibration Lab Checks

Ortho-Phosphate Probes Adding All Probes to the Remaining 2 Basins Possibility of Operating Blowers from

Ammonia