Record Display for the EPA National Library Catalog


Main Title Renovation of industrial inorganic wastewater by evaporation with interface enhancement /
Author Sephton, Hugo H.,
CORP Author California Univ., Berkeley. Sea Water Conversion Lab.;Industrial Environmental Research Lab., Cincinnati, Ohio.
Publisher Industrial Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1976
Report Number EPA-600/2-76-017; EPA-R-802753; EPA-ROAP-21AZQ-019
Stock Number PB-252 025
OCLC Number 02291794
Subjects Factory and trade waste ; Water reuse ; Cooling towers
Additional Subjects Industrial waste treatment ; Heat exchangers ; Evaporation ; Water pollution control ; Waste water reuse ; Feedwater ; Surfactants ; Heat transfer ; Performance ; Evaporators ; Pipes(Tubes) ; Distillation ; Pilot plants ; Feasibility ; Antifoaming agents ; Flow charting ; Vertical tube evaporators ; Foam fractionation
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 600-2-76-017 Headquarters Library/Washington,DC 07/21/2014
ELBD ARCHIVE EPA 600-2-76-017 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ESAD  EPA 600-2-76-017 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-252 025 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation vii, 59 pages : illustrations ; 28 cm.
A novel method of vertical tube evaporation (VTE) to improve heat transfer performance was applied to the concentration of three types of industrial wastewaters. This method, interface enhancement, relies upon the addition of a few parts per million of a selected surfactant to the wastewater feed followed by imposed two-phase foamy liquid-vapor flow over the heat transfer surfaces. Applied to the concentration of power plant cooling tower blowdown and boiler blowdown, interface-enhanced VTE provided an approximate 120 percent increase in the usual VTE heat transfer performance, using a 5,000 gpd pilot plant having double-fluted aluminum-brass distillation tubes, under process conditions that are realistic for large industrial plants. Acidic mine drainage water, concentrated by double-fluted titanium evaporator tubes provided about a 60 percent heat transfer performance enhancement. Beneficial side effects of the surfactant additive were to inhibit the crystallization of solutes, permitting concentration of the wastewaters to smaller volumes. This work indicates feasibility and improved economics for renovation-recycle of each of the three types of wastewater examined.
"Project Number R-2753." Report prepared by Sea Water Conversion Laboratory, University of California, Richmond, California. Includes bibliographical references (page 58).