PROJECT HIGHLIGHTS
Commissioned May, 2008
Domestic WW, Retrofit
Permit(s); Discharge
NA/NA/NA (TN/TP/Turbidity)
Housing Development, State
Park, School ⇒ Surface Water;
River
MMF Capacity: 0.75 MGD
$12.0/gal
1 FTE (Full‐Time Employees)
Pump assisted gravity (PAG) filtration is used to reduce energy consumption more than 10%.
DESCRIPTION
The Bob’s Creek MBR is located in West Winfield, MO and is owned by the Lincoln County PWSD #1. The plant was built to replace the existing lagoon system. The plant is permitted to treat a design wastewater stream of 0.75 MGD. Filtration is driven by a pump‐assisted gravity (PAG) to cut energy by demand by 10% or more. During normal operating condition, gravity pushes water through the submerged membranes. However, during cold weather and peak flow events, pumps automatically turn on to sustain higher fluxes (filtration rate per area or membrane). Waste solids are thickened to 3% solids with the PAD‐K® technology utilizing the same membrane equipment installed in the bioreactors.
LOCATION
Winfield, MO
IMAGES
PROJECT OVERVIEW
| System Type(s) | Enviroquip ® MBR, Pad-K® |
|---|---|
| Previous Facility Type | Lagoon |
| Owner | Lincoln County PWSD #1 |
| Engineer | MECO Engr |
| Contractor | Essex Construction |
| Operations | AWM |
| Delivery Method | Pre-Selection |
| Time To Retrofit | 24 months |
| Total Installed Project Cost | $9,000,000 |
PLANT DESIGN INFORMATION
| Fine Screen Type | Bar Screen |
|---|---|
| Aperture or Slot Size | 2 mm |
| Supplemental Aeration Technology | Fine Bubble, Tubes |
| MBR Blower Type | Positive Displacement |
| Solids Management Data | Aerobic Digestion, Membrane Thickening, Class B |
| SCADA System | iFix |
| Disinfection Method | None |
| # Process Stages | 3 |
MBR (MEMBRANE ZONE) DESIGN
| Filtration Mode | Gravity |
|---|---|
| # of Reactors : | 4 |
| Submerged Membrane Unit (SMU) | EK400, KUBOTA® |
| # SMU | 36 |
| Design Flux (MMF) | 12.3 gfd |
| Minimum Temperature | 10°C |
| Peak Factor | 4.0 |
| # of Maintenance Cleans | 4 |
