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MBRCentral.com is your source of information for OVIVO® MBR products & services. Constantly evolving, MBRCentral.com will provide you with all the tools you need regarding OVIVO® MBR.
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Home Case Study

Norfolk

Norfolk

PROJECT HIGHLIGHTS

Commissioned March, 2012 Domestic WW, Greenfield Permit(s); Discharge 10/0.1/2   (TN/TP/Turbidity) Prison ⇒ Stream MMF Capacity: 0.52 MGD $15.38/gal 3 FTE (Full‐Time Employees)
NDPES limits are achievable using MBR technology even while conserving energy.

DESCRIPTION

The old wastewater treatment facility at Norfolk MA exceeded permit limits in 2005. With a sand‐ filter the plant would not be capable of meeting the new NDPES standard of 0.1 total phosphorus. Planning began for a new plant to handle the 0.484 MGD flow from four nearby state prisons. At first, an MBR was not considered because of a perception of complexity and operating cost, but further examination showed that an Enviroquip system could achieve the highest quality effluent even while achieving energy consumption equal to or competitive with the alternative conventional treatment systems. In addition, Enviroquip's automated controls package would allow the plant to run with minimal operator intervention.

LOCATION

Norfolk, MA

IMAGES

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PROJECT OVERVIEW

System Type(s) Enviroquip ® MBR
Previous Facility Type Recirculating Sand Filter
Owner Norfolk
Engineer American Engineering; AWM
Contractor EAN Corp.; WES Construction Corp.
Operations State of Massachusetts
Delivery Method Negotiation
Time To Retrofit 24 months
Total Installed Project Cost $8,000,000

PLANT DESIGN INFORMATION

Fine Screen Type Bar Screen
Aperture or Slot Size 1 mm
Supplemental Aeration Technology Fine Bubble, Tubes
MBR Blower Type Positive Displacement
Solids Management Data Hauling
SCADA System Wonderware
Disinfection Method UV
# Process Stages 5

MBR (MEMBRANE ZONE) DESIGN

Filtration Mode Pumped
# of Reactors : 4
Submerged Membrane Unit (SMU) RW300, KUBOTA®
# SMU 12
Design Flux (MMF) 9.4 gfd
Minimum Temperature 10°C
Peak Factor 2.6
# of Maintenance Cleans 4
Navarro County
North Fork