PROJECT HIGHLIGHTS
Commissioned December, 2012
Domestic WW, New
Construction
Permit(s); Reuse
TN 10
Municipal treatment Reuse
MMF Capacity: 0.125 MGD
1.0 FTE (Full‐Time Employees)
The plant blends new technology with old activated sludge rules of thumb. The learning curve has been very short.
DESCRIPTION
This facility was looking for ease of operation, installation, and future expansion. Ovivo provided their modular MPAC MBR System to meet all of these needs. With steel tank construction and equipment skid, the system setup required very little in the way of existing site preparation. The modular design also provides system flexibility by allowing re‐configuration of process zones as required by actual influent flow and loading conditions. An inherent advantage of the Ovivo MBR system is the ease of expansion.
LOCATION
Douglas Flat, CA
IMAGES
PROJECT OVERVIEW
| System Type(s) | Ovivo MBR |
|---|---|
| Previous Facility Type | Conventional Activated Sludge |
| Owner | Calaveras County |
| Engineer | Calaveras County |
| Contractor | Twain Harte |
| Operations | Calaveras County |
| Delivery Method | Pre-Selection |
| Time To Retrofit | 18 months |
| Total Installed Project Cost | $4,420,880 |
PLANT DESIGN INFORMATION
| Fine Screen Type | Bar Screen |
|---|---|
| Aperture or Slot Size | 2 mm |
| Supplemental Aeration Technology | Fine Bubble, Discs |
| MBR Blower Type | Positive Displacement |
| Solids Management Data | Belt Press, Hauling |
| SCADA System | Wonderware |
| Disinfection Method | U/V |
| # Process Stages | 2 |
MBR (MEMBRANE ZONE) DESIGN
| Filtration Mode | Pumped |
|---|---|
| # of Reactors : | 2 |
| Submerged Membrane Unit (SMU) | Es125, KUBOTA® |
| # SMU | 12 |
| Design Flux (MMF) | 9.7 gfd |
| Minimum Temperature | 12°C |
| Peak Factor | 2.0 |
| # of Maintenance Cleans | 3 |
