The City of Boca Raton, Florida awards contract to Hydranautics

Hydranautics has a contract from the City of Boca Raton, Florida to supply a 40 MGD potable water plant utilizing over 8,000 Hydranautics' low-fouling 8" ESNA1-LF nanofiltration membranes.

Oceanside, Calif., May 15, 2003 -- Hydranautics, a provider of membrane technology, is pleased to announce the contract award from the City of Boca Raton, Florida to supply a 40 Million Gallons per Day (MGD) potable water plant utilizing over 8,000 Hydranautics' low-fouling 8" ESNA1-LF nanofiltration membranes.

The contract, awarded in February, will allow Hydranautics to supply the membranes and provide installation and start-up services for the anticipated plant start-up in the end of summer 2003. Producing over 40 MGD, this will be the largest nanofiltration membrane plant in the US and perhaps around the world.

The plant will consist of 10 primary softening trains each capable of producing a total of 3,676,000 gallons per day (GPD) of permeate water operating at 85% recovery. The system also includes 2 nanofiltration concentrator units that operate as a third stage and produce 1,620,000 GPD per train.

These trains operate at a recovery of 50% and add a total of 3,240,000 GPD of additional treated permeate water.

The Boca Raton plant was designed by CDM (Camp Dresser & McKee) and pilot tested Hydranautics' membranes as well 3 other manufacturers products. The City of Boca Raton and CDM chose the ESNA1-LF technology, the newest version of Hydranautics' low fouling nanofiltration products. ESNA1-LF provides salt rejection of 90% and controlled hardness removal, eliminating the need for hybrid membrane system designs.

These low-pressure membranes can significantly reduce operating costs by lowering power consumption, while providing a non-aggressive low TDS permeate water. The ESNA1-LF low fouling technology can also reduce the cost of chemicals and labor that are associated with more frequent membrane cleaning. ESNA1-LF technology is ideal for softening applications, producing lower color and DBP (Disinfection By-Product) formation potential than standard lime softening processes.

For more information about the new ESNA-LF membrane with the highest combination of productivity and rejection in the marketplace, please call at 1-800-CPA-PURE, visit us online at www.membranes.com or send an e-mail to info@hydranautics.com.

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