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Ocean Reef
PROJECT
- Commissioned September,
2010 / Upgrade March 2016 - Domestic WW, CAS Retrofit
- Permit(s); Discharge + Reuse
- 3/1/NA (TN/TP/Turbidity
- Resort RO Feed; Irigation
- MMF Capacity: 0.66 MGD
- $12.88/gal
- 1 FTE (Full-Time Employees)
The upgrade allows the plant to meet new Advanced Wastewater Treatment effluent
limits imposed by the FDEP
PROJECT OVERVIEW
| System Type(s): | Ovivo® MBR |
| Previous Facility Type: | Primary Treatment |
| Owner: | North Key Largo Utility Corporation |
| Engineer: | Wade Trim |
| Contractor: | Wharton Smith, Inc. |
| Operations: | North Key Largo Utility Corporation |
| Delivery Method: | Pre-Selection |
| Time To Retrofit: | 18 months |
| Total Installed Project Cost: | $8,500,000 |
DESCRIPTION
In the Florida Keys, the City of Marathon’s Little Venice Wastewater Treatment Facility was originally an SBR system with a treatment capacity of 0.161 MGD. In 2005, the City adopted a plan that identified this plant for expansion. Only an MBR system was considered due to the tiny footprint available for the facility and the strict effluent requirements. Ovivo membrane system was chosen due to its at plate technology, simple cleaning skid and procedures, and comprehensive SCADA system. The new system was constructed on the existing site with no interruption in service, and no effluent violations during the entire construction process. The finished facility is capable of treating 0.450 MGD AADF and providing 100%
reuse of the treated water as need for its customers. In Sept 2016, the MBR was upgraded by replacement of the flat plate membranes with high end flat sheet membranes. The entire upgrade was done in 1 month- one basin at a time without interrupting the treatment.
Plant Design Information
| Fine Screen Type : | Band Screen |
| Aperture or Slot Size : | 3 mm |
| Supplemental Aeration Technology : | Fine Bubble Disks |
| MBR Blower Type : | Positive Displacement |
| Solids Management Data : | Hauling |
| SCADA System : | Wonderware |
| Disinfection Method : | UV |
| # Process Stages : | 4 |
MBR (Membrane Zone) Design
| Filtration Mode: | Pumped |
| # of Reactors: | 2 |
| Submerged Membrane Unit (SMU): | OV480 |
| # SMU: | 8 |
| Design Flux (MMF): | 15.7 gfd |
| Minimum Temperature: | 20 °C |
| Peak Factor: | 2.0 |
Come talk with our MBR experts at booth #4029
Ovivo® MBR will be in New Orleans for #WEFTEC !
Come and see us at booth #4029 at WEFTEC, the Water Environment Federation’s Annual Technical Exhibition and Conference, between October 1st and 3rd, 2018, in New Orleans, Louisiana, USA.
