Miami-Dade selects Severn Trent Services' filtration technology

The Miami-Dade Water and Sewer Department South District Wastewater Treatment Plant has selected Severn Trent Services' TETRA DeepBed filtration technology as part of a high-level disinfection project that expands the plant's capacity by 60 million gallons per day up to 142 MGD and is the precursor to future wastewater reclamation. Using reclaimed water enables the MDWASD to provide a sustainable water resource for its environment and its future...

• One of the largest deep bed sand filter systems in the United States helps set the stage for future water reuse and reclamation in one of Florida's most populous areas.

FORT WASHINGTON, PA, Aug. 8, 2008 -- The Miami-Dade Water and Sewer Department (MDWASD) South District Wastewater Treatment Plant has selected Severn Trent Services' TETRA® DeepBed™ filtration technology as part of a high-level disinfection (HDL) project that expands the plant's capacity by 60 million gallons per day (MGD) up to 142 MGD and is the precursor to future wastewater reclamation. As Miami-Dade County's population continues to increase, using reclaimed water enables the MDWASD to provide a sustainable water resource for its environment and its future.

The HDL project includes the construction of one of the largest deep bed sand filter systems in the United States. As the general contractor, Poole and Kent, a subsidiary of EMCOR Group Inc., will oversee the construction of 30 TETRA DeepBed filter cells measuring 15'3" wide by 88' long or more than 40,000 square feet. The filters will employ the new TETRA SNAP T™ HDPE jacketed, concrete filter underdrain, which is designed to provide resistance to uplift during air and water backwash as well as superior resistance to live load.

The filters will have space for expansion up to 48 cells in the future and include the capability of denitrifying. Once in operation, the TETRA DeepBed filters will provide effluent meeting Florida Department of Environmental Protection regulations of Long term plans include using this quality effluent for irrigation and possible industrial reuse.

In 2006, an eight-month pilot study was conducted by design engineer Hazen Sawyer in Hollywood, Fla., to evaluate several types of commercially available filter technologies, and TETRA DeepBed filters were concluded to give MDWASA the most reliable and flexible choice. Severn Trent Services was represented by Moss-Kelley Inc. on this project.

Once started, construction is expected to be completed in about five years.

Severn Trent Services, with global headquarters in Fort Washington, Pa., USA, is a leading supplier of water and wastewater solutions.

EMCOR Group Inc. is a global leader in mechanical, environmental and electrical construction, energy infrastructure and facilities services.

Moss-Kelley Inc. is a manufacturer's representative firm dedicated to providing the most highly qualified, technically competent and professional sales and service in the water and wastewater industry in the State of Florida.

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