Analysis of a Dual Mode Desalination System for Naval Bases
Abstract
A study was performed to determine the technical and economic feasibility of a dual mode desalination device combining a reverse osmosis unit and a multistage flash distillation unit. The function of the reverse osmosis unit would be to remove sufficient amounts of scaling salts from intake seawater to allow scale-free operation of the flash distillation unit at temperatures up to 350F. A review of membrane technology revealed that at 600-800 psi, specially blended open cellulose acetate membranes or an ion exchange membrane can reject the necessary percentage of scaling salts with sufficient water flux to feed the flash distillation unit. Thus the dual mode desalination appears technically feasible. An economic evaluation of the dual mode device, however, reveals that the cost of its product water would be higher than that from a conventional 250F flash distillation unit.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1973
- Accession Number
- AD0764055
Entities
People
- E. E. Cooper
Organizations
- Naval Facilities Engineering Service Center