Final Report on the Investigation of Water Purification and Waste Concentration by the Vacuum Freezing Multiple Phase Transformation Process and Its Eutectic Extension, September 1986-September 1987

摘要

The study is a continuation of the study of the Volume Freezing Multiple Phase Transformation (VFMPT) process for desalination and water reuse. During the first grant period, bench scale experiments were completed for the VFMPT process and initial design of a prototype VFMPT plant was completed. During the course of the second grant, the vacuum freezing and vapor liquefaction operations were tested in a prototype unit referred to as the '40 Inch Long' unit. It was concluded that a two rotating screws half submerged in the pool would be a very energy efficient method for providing the necessary surface areas. A flowsheet was developed for the VFMPT plant with detailed mass and energy balances and energy requirements determined.