A seawater reverse osmosis desalination plant rated for 2000 gallons per day output was installed and operated aboard the MONOB (YAG-61) for shipboard evaluation. The reverse osmosis plant produced 2200 to 3200 gallons per day of potable water when operated between pressures of 650 and 800 pounds per square inch gage, respectively. The diatomaceous earth prefilter performed reliably providing sufficiently high quality seawater filtrate to the reverse osmosis module. The overall reverse osmosis plant data after 480 operating hours showed no evidence of performance decline due to particulate fouling or calcium carbonate scaling. The reverse osmosis desalination plant power requirements aboard MONOB varied between 4.98 and 6.77 watt-hour per pound of freshwater produced. The fuel heat input requirements for a reverse osmosis plant were calculated to be 56 British thermal units per pound of freshwater for a ship that utilizes diesel electric generators, 91 British thermal units per pound for a ship that utilizes steam turbine generators, and 95.9 British thermal units per pound for a vessel that utilizes gas turbine generators. Procurement of a 12,000 gallon per day desalination plant is recommended along with a continuing technical effort on filtration and high-pressure pumps to achieve specific advanced performance goals. (Author)

  • Corporate Authors:

    David Taylor Naval Ship R&D Center

    Propulsion and Auxiliary Systems Department
    Annapolis, MD  United States  21402
  • Authors:
    • Pizzino, J F
  • Publication Date: 1979-12

Media Info

  • Pagination: 28 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00313322
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: DTNSRDC/PAS-79/30 R&D Rpt.
  • Files: TRIS
  • Created Date: Jun 26 1980 12:00AM