THE RECOVERY OF WATER FROM URINE BY MEMBRANE ELECTRODIALYSIS

Abstract

A laboratory-scale experimental program was con ducted which clearly indicated the feasibility of membrane electrodialysis for recovering potable water from urine. Since electrodialysis removes electrolytes from urine, pretreatment techniques were investigated for the removal of non-electrolytes. These techniques were: charcoal adsorption, chemical oxidation, and enzymatic hydrolysis of urea to ammonium carbonate. A model of a urine reclamation system was built, comprised of two main processes: charcoal adsorption and electrodialysis. The system weighs 15 pounds, is less than one ft3 in size, and has a peak power requirement of 45 watts for 8 hours operation for the daily recovery of 3000 ml of potable water from urine. The daily energy requirement is 310 watt-hrs, including 160 watt-hrs for charcoal regeneration. Excellent quality water is recovered in yields of 92%.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1963
Accession Number
AD0407137

Entities

People

  • Daniel L. Brown
  • Jonathan D. H. Smith
  • Robert W. Lindstrom

Tags

Communities of Interest

  • Biomedical
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acids
  • Buffers (Chemistry)
  • Carbonates
  • Chemical Analysis
  • Chemical Compounds
  • Chemical Reaction Properties
  • Chemical Reactions
  • Current Density
  • Drinking Water
  • Energy Consumption
  • Health Services
  • Organic Compounds
  • Pilot Plants
  • Precipitation
  • Public Health
  • Separators
  • Test And Evaluation

Fields of Study

  • Environmental science

Readers

  • Analytical Chemistry
  • Astronomy and Astrophysics.
  • Systems Analysis and Design