PROJECT HIGHLIGHTS
From January 2006 to February 2008 Woodside Wastewater Treatment Plant (WWTP) in Suffolk County, New York was hauling an annual average of 1,110,00 gallons of liquid sludge to be processed at Bergen Point a centralized wastewater treatment facility. Suffolk County paid more than $100,000 annually to haul this sludge from Woodside WWTP to the Bergen Point facility. This was a substantial cost to Suffolk County and were looking for a solids handling process to minimize liquid hauling costs from Woodside WWTP.
DESCRIPTION
SOLUTION
Woodside WWTP installed a Membrane Thickening (MBT) process in order reduce hauling costs at this facility. The Membrane Thickening (MBT) process was retrofit into two existing sludge holding tanks minimizing capital costs by preventing construction of new tanks. Commissioned since March 2008, the MBT process at Woodside WWTP pre-thickens liquid sludge produced at this facility up to 3.5% solids by utilizing a Kubota flat plate membrane and operating it in conjunction with two sludge holding tanks. By pre-thickening the sludge up to 3.5% solids with an MBT process, sludge hauling at Woodside WWTP was a reduced by more than 57% which resulted in an annual savings of $60,000 on hauling costs. Based on hauling costs alone, Suffolk County was able to get a return of investment on the MBT process in only 2.5 years.
LOCATION
,
IMAGES
PROJECT OVERVIEW
| System Type(s) | Concentric Circular Activated Sludge System |
|---|---|
| Previous Facility Type | Same as above |
| Owner | County of Suffolk |
| Engineer | Ron Warren, County of Suffolk |
| Contractor | County of Suffolk |
| Operations | County of Suffolk Public Works Department |
| Delivery Method | Direct Sale to Owner |
| Time To Retrofit | |
| Total Installed Project Cost | $Ron Warren, 631-852-4304, ron.warren@co.suffolk.ny.us |
PLANT DESIGN INFORMATION
| Fine Screen Type | Fine Screen (CSC FS-600S) |
|---|---|
| Aperture or Slot Size | 2mm |
| Supplemental Aeration Technology | TransMAX Diffuser System |
| MBR Blower Type | Positive Displacement |
| Solids Management Data | Membrane Thickening |
| SCADA System | |
| Disinfection Method | |
| # Process Stages |
MBR (MEMBRANE ZONE) DESIGN
| Filtration Mode | Pumped |
|---|---|
| # of Reactors : | One |
| Submerged Membrane Unit (SMU) | ES-200 |
| # SMU | One |
| Design Flux (MMF) | 4.4 gfd |
| Minimum Temperature | 15 degree C |
| Peak Factor | |
| # of Maintenance Cleans | Every 3-4 Months |
