Laserfiche WebLink
<br />~ <br />w <br />w <br />r~ <br /> <br />I INTRODUCTION <br /> <br />Since its establishment in 1952, the Office of Saline Water has <br /> <br />sponsored research and development on a number of saline water conversion <br /> <br />processes. These processes have been carried to various stages of devel- <br /> <br />opment, and cost estimates have been prepared for the more advanced ones. <br /> <br />In 1966, Stanford Research Institute completed for OSW an engineering <br />cost study of twelve water conversion processes.l This study identified <br /> <br />the important cost components of each process and showed how process im- <br /> <br />provements would affect water costs. As the result of a rapidly changing <br />technology, certain process variables and cost factors used in the original <br />SRI study are no longer valid and have been replaced with values resulting <br />in lower water costs. In addition, Some of the processes in the original <br /> <br />study are clearly uneconomic and are no longer considered applicable for <br />large-scale desalination plants. OSW therefore requested that SRI update <br />the report uSing presently attainable process technologies and current <br />costs. The >>resent study was restricted to the following six desalina- <br /> <br />tion processes that are currently considered the most economically favor- <br /> <br />able for application within the United States: <br /> <br />1. Multistage Flash Distillation (MSF) <br /> <br /> <br />2. Vertical Tube Evaporator (VTE) combined with MSF <br /> <br /> <br />3. VapQr Compression Distillation (VC) combined with VTE and MSF <br /> <br /> <br />4. Vacuum-Freeze Vapor Compression (VFVC) <br /> <br /> <br />5. ReVerse Osmosis (RO) <br /> <br /> <br />6. Electrodialysis (ED) <br /> <br />1 <br /> <br />