Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Cost of Purifying Municipal Waste Waters by Distillation.
Author Gerste, J. A. ;
CORP Author Delaware Univ., Newark.
Year Published 1963
Report Number AWTR-6,; PHS-Pub-999-WP-6
Stock Number PB-168 978
Additional Subjects ( Water pollution ; Public health) ; ( Water supplies ; Purification) ; ( Wastes(Sanitary engineering) ; Distillation) ; Costs ; Sea water ; Contamination ; Boiling point ; Evaporation ; Temperature ;
Library Call Number Additional Info Location Last
NTIS  PB-168 978 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 51p
Desk top studies of the cost of distillation of waste water are made with the types of equipment proposed for use with sea water. The estimates are based upon those for sea water, but are modified to conform with the differences in composition of sea water and waste water, and differences in the modes of operation for the two feeds. The smaller concentration of scaling materials in waste water should allow distillation to be carried out at a higher temperature than can be used with sea water. The smaller total contaminant concentration results in a smaller boiling-point elevation. Because of the need to dispose of the blowdown permanently it is necessary to concentrate to a far greater extent than in the case of sea-water distillation. Three types of equipment: Multi-stage flash, multiple-effect, and recompression-flash, appear economically promising. For all types of equipment the cost for the distillation step alone is somewhat less than for sea water, but inclusion of costs for feed pretreatment and ultimate disposal of blowdown, bring the cost up to about that for sea water. (Author)