Waste water recycling by ion-exchange: I. Complete desalination

Y. Egozy, E. Korngold, N. C. Daltrophe, M. Rebhun

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Recycling of waste water by ion-exchange was studied on a bench scale. Secondary municipal effluent, which had undergone lime flocculation, served as a feed for the ion-exchange system. It was found that both the salt concentration and the organic matter content of the effluent could be reduced to produce high quality water, suitable for a wide range of agricultural and industrial applications. Salt concentrations was reduced from 15 meq/l (750 ppm as CaCO3) to about 1 meq/l (50 ppm as CaCO3) and the organic matter, from 70-100 mg/l COD (chemical oxygen demand) to 20 mg/l. The anion exchanger was regenerated with Ca(OH)2 according to a new method recently developed. The treatment cost for a 2000 m3/day plant was calculated to be 18.0 ¢/m3.

Original languageEnglish
Pages (from-to)123-137
Number of pages15
Issue number2
StatePublished - 1 Jan 1980

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • General Materials Science
  • Water Science and Technology
  • Mechanical Engineering


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