PROJECT HIGHLIGHTS
Commissioned October, 2007
Domestic WW, CAS Retrofit
Permit(s); Discharge
NA/NA /0.09 (TN/TP/Turbidity)
Municipal ⇒ Pond
MMF Capacity: 0.42 MGD
1 FTE (Full‐Time Employees)
In addition to the MBR, membrane thickening is also provided to reduce operation of the belt filter press and the overall sludge hauling requirements.
DESCRIPTION
Located west of Columbus, this 421,000 gpd plant was a retrofit of an existing conventional activated sludge system. The use of Kubota membranes made the upgrade extremely easy and straight forward. The existing tankage was simply subdivided with new internal tank walls to provide one swing basin for simultaneous nitrification/denitrification (SNDN), and two membrane basins. Ease of operation was of primary importance, as the small staff is responsible for all the public works requirements in North Lewisburg.
LOCATION
North Lewisburg, OH
IMAGES
PROJECT OVERVIEW
| System Type(s) | Enviroquip ® MBR, MBT |
|---|---|
| Previous Facility Type | CAS |
| Owner | City of North Lewisburg, OH |
| Engineer | R.D. Zande |
| Contractor | Downing Construction |
| Operations | North Lewisburg Public Works |
| Delivery Method | Negotiation |
| Time To Retrofit | 12 months |
| Total Installed Project Cost | $Unavailable |
PLANT DESIGN INFORMATION
| Fine Screen Type | Bar Screen |
|---|---|
| Aperture or Slot Size | 1 mm |
| Supplemental Aeration Technology | Medium Bubble, TransMax |
| MBR Blower Type | Positive Displacement |
| Solids Management Data | Membrane Thickening, Belt Press |
| SCADA System | Wonderware |
| Disinfection Method | UV |
| # Process Stages | 2 |
MBR (MEMBRANE ZONE) DESIGN
| Filtration Mode | Pumped |
|---|---|
| # of Reactors : | 2 |
| Submerged Membrane Unit (SMU) | EK400, KUBOTA® |
| # SMU | 10 |
| Design Flux (MMF) | 12.2 gfd |
| Minimum Temperature | 12°C |
| Peak Factor | 2.0 |
| # of Maintenance Cleans | 3 |
