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Improved Entry to Transfer Line in Primary Sedimentation Basin
Author(s) -
Hirsch A. Adler
Publication year - 1960
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1960.tb00512.x
Subject(s) - lime , sedimentation , suspension (topology) , effluent , settling , engineering , environmental engineering , materials science , geology , mathematics , metallurgy , geomorphology , sediment , homotopy , pure mathematics
This article discusses an extension of the entrance of an auxiliary transfer line from an unshielded position to a screened position behind the orifice wall at the effluent end of the east basin of the McNeil Street water plant in Shreveport, Louisiana. This action almost completely eliminated carryover of alum floc to the west basin, thus greatly improving the clarity of applied water on the filters. Better conditions for lime dispersion were also provided by the creation of a whirlpool where the suspension was added. A method of streamlining bell ends of pipe with glass‐fibered polyester resin filler was successful in reducing hydraulic losses at the entrance of the pipe. Significant savings in alum and lime are indicated.