Water Recovery by Freeze Drying Using MicroWAVE Energy

摘要

The recovery of water from urine by the freeze drying process, using a microwave energy source is investigated. Chemical and biological contaminants are well below the standards established. Taste and odor of the reclaimed water are satisfactory for drinking purpose without additional treatment. Various foam and sponge materials for use in zero-gravity environments were tested. Yield rate studies were performed, using such variables as power input, geometrical configuration, use of sponge and foam materials, and comparison of pre-frozen and vacuum frozen samples. A suggested apparatus design is presented and space and power requirements are discussed. (Author)