Record Display for the EPA National Library Catalog


Main Title Initial mixing in coagulation processes /
Author Stenquist, Richard J.,
Other Authors
Author Title of a Work
Kaufman, Warren J.,
Kaufman, Warren J., 1922-
Publisher United States Environmental Protection Agency, Office of Research and Monitoring,
Year Published 1972
Report Number EPA-R2-72-053; EPA-17030-DLX; 03511
Stock Number PB-213 902
OCLC Number 04577932
Subjects Sewage--Purification--Flocculation ; Mixing
Additional Subjects ( Coagulation ; Mixing) ; ( Sewage treatment ; Coagulation) ; ( Flocculating ; Mixing) ; Performance evaluation ; Turbulent flow ; Alums ; Tubes ; Tracer studies ; Electrical resistance ; Chlorination ; Flow rate ; Applications of mathematics ; Chemical reactors ; Sewage flow rate
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJAD  EPA R2-72-053 Region 3 Library/Philadelphia, PA 04/06/1990 DISPERSAL
NTIS  PB-213 902 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation ix, 161 pages : illustrations ; 28 cm
The investigation was undertaken with the objective ofdetermining the importance of the initial mixing step in water and wastewater treatment processes and determining whether increasing the rapidity of the initial mixing could improve process performance. The principal process considered was alum coagulation-flocculation of a kaolin suspension in water. The initial mixing device under consideration was a biplane, square-mesh grid of bars placed in a turbulent flow, tubular reactor; a 2-in. pipe was used in the present studies. Studies were made using a single electrode 'point' conductivity probe and NaCl solution tracer to determine what parameters affect the mixing which occurs in the turbulaent flow field downstream from a grid, and from these results a general mixing model was developed. The relation between initial mixing and process performance was also studied. (Author)
"November 1972." "Project 17030 DLX." "Project Officer: Dr. Sidney A. Hannah, National Environmental Research Center, Environmental Protection Agency, Cincinnati, Ohio." Includes bibliographical references (pages 157-161).