PROJECT HIGHLIGHTS
MBRs were selected to minimize footprint on park property and provide the capability for remote operations, nutrient removal.
DESCRIPTION
Washington State’s response is the Puget Sound Initiative – an action plan to protect and restore the environmental health of Puget Sound. The Park decided to use membrane bioreactor (MBR) technology to increase the level of wastewater treatment for the selected park. The wastewater at the park includes RV waste, which results in higher than normal influent loadings, especially nitrogen. MBRs were also selected for their ability to minimize site footprint on park property and provide the capability for remote facility operations, nutrient removal, and the opportunity for reuse of the effluent. Illahee State Park use septic systems and drain fields. The park is a moderate to high geologically hazard area located within a Priority 2 Bald Eagle nesting and roosting area.
LOCATION
Bremerton, WA
IMAGES
PROJECT OVERVIEW
| System Type(s) | Enviroquip ® MPAC® |
|---|---|
| Previous Facility Type | Septic |
| Owner | Washington State Parks & Recreation |
| Engineer | Brown and Caldwell |
| Contractor | Stan Palmer Construction |
| Operations | West Sound Utility District |
| Delivery Method | Pre-Purchase, Pre-Selection |
| Time To Retrofit | 8 months |
| Total Installed Project Cost | $1,850,000 |
PLANT DESIGN INFORMATION
| Fine Screen Type | Bar Screen |
|---|---|
| Aperture or Slot Size | 2 mm |
| Supplemental Aeration Technology | Fine Bubble, Tubes |
| MBR Blower Type | Regenerative |
| Solids Management Data | Hauling |
| SCADA System | Wonderware |
| Disinfection Method | NA |
| # Process Stages | 4 |
MBR (MEMBRANE ZONE) DESIGN
| Filtration Mode | Pumped |
|---|---|
| # of Reactors : | 1 |
| Submerged Membrane Unit (SMU) | FS50, KUBOTA® |
| # SMU | 1 |
| Design Flux (MMF) | 8.1 gfd |
| Minimum Temperature | 10°C |
| Peak Factor | 2.0 |
| # of Maintenance Cleans | 2 |
