PROJECT HIGHLIGHTS
- Commissioned November, 2008
- Domestic WW, Greenfield
- Permit(s); Discharge
- 10/NA/NA (TN/TP/Turbidity)
- POTW River
- MMF Capacity: 0.4 MGD
- $14.25/gal
- 0.5 FTE (Full-Time Employees)
The Town of Alpine utilized a CWRSF loan to replace the existing WWTP and address the failure of several local septic systems.
DESCRIPTION
Following UV disinfection (lower for MBR than other technologies), the clear effluent flows by gravity into the Snake River at Palisades Reservoir. Biosolids are wasted to an aerobic digester where they are treated to meet Class B standards. The solids concentration in the digester is thickened to 3% via another submerged membrane to increase the storage capacity of the digesters. The digested biosolids are placed into a trailer mounted gravity filter that retains the solids and allows the water to pass through the filters and back to the treatment plant headworks. The biosolids at a concentration of 15% are then used at the plant site as a soil amendment or hauled to the landfill.
LOCATION
Alpine, WY
IMAGES
PROJECT OVERVIEW
| System Type(s) | Ovivo ® MBR, PAD-K® |
|---|---|
| Previous Facility Type | None |
| Owner | Town of Alpine |
| Engineer | Nelson Engineering |
| Contractor | Moltz Contructors, Inc. |
| Operations | Town of Alpine |
| Delivery Method | DBB |
| Time To Retrofit | 18 months |
| Total Installed Project Cost | $5,700,000 |
PLANT DESIGN INFORMATION
| Fine Screen Type | Drum Screen |
|---|---|
| Aperture or Slot Size | 2 |
| Supplemental Aeration Technology | Fine Bubble, Tubes |
| MBR Blower Type | Positive Displacement |
| Solids Management Data | Membrane Thickening, Aerobic |
| SCADA System | Digestion, Class B |
| Disinfection Method | RSView32 |
| # Process Stages | UV |
MBR (MEMBRANE ZONE) DESIGN
| Filtration Mode | PAG (Pump Assisted Gravity) |
|---|---|
| # of Reactors : | 2 |
| Submerged Membrane Unit (SMU) | EK400, KUBOTA® |
| # SMU | 8 |
| Design Flux (MMF) | 14.5 gfd |
| Minimum Temperature | 5°C |
| Peak Factor | 1.5 |
| # of Maintenance Cleans | 2 |
