PROJECT HIGHLIGHTS
Commissioned April, 2013
Domestic WW, New Construction
Permit(s); Discharge
Municipal treatment -> Surface Water
MMF Capacity: 0.30 MGD
0.25 FTE (Full‐Time Employees)
For the Love of the Lake
DESCRIPTION
A community near the eastern shore of Lake Michigan, The City of Pentwater was in need of improving the wastewater treatment, while preparing for future phosphorus limits. After evaluation of several options, the Ovivo MBR was selected for the proven excellent effluent quality, particularly for phosphorus removal in this case. Beyond nutrient removal requirements, the city is impressed with the overall operation of the plant and its inherent flexibility.
LOCATION
Pentwater, MI
IMAGES
PROJECT OVERVIEW
| System Type(s) | Ovivo MBR |
|---|---|
| Previous Facility Type | Sedimentation |
| Owner | City of Pentwater |
| Engineer | Prein & Newhof |
| Contractor | Grand River Construction |
| Operations | City of Pentwater |
| Delivery Method | Pre-Selection |
| Time To Retrofit | 24 months |
| Total Installed Project Cost | $5,500,000 |
PLANT DESIGN INFORMATION
| Fine Screen Type | Band Screen |
|---|---|
| Aperture or Slot Size | 3 mm |
| Supplemental Aeration Technology | Fine Bubble, Discs |
| MBR Blower Type | Positive Displacement |
| Solids Management Data | Hauling |
| SCADA System | Wonderware |
| Disinfection Method | Chlorine |
| # Process Stages | 4 |
MBR (MEMBRANE ZONE) DESIGN
| Filtration Mode | Pump Assited Gravity (PAG |
|---|---|
| # of Reactors : | 2 |
| Submerged Membrane Unit (SMU) | RW400, KUBOTA® |
| # SMU | 4 |
| Design Flux (MMF) | 12.0 gfd |
| Minimum Temperature | 5°C |
| Peak Factor | 2 |
| # of Maintenance Cleans | 2 |
