Research Article
Apr 1972
Pneumatic Barrier and Beach Pollution
Authors: Martin S. Hertzendorf, Joseph V. Fiore, Herbert E. Klei, and I. J. KopelmanAuthor Affiliations
Publication: Journal of the Sanitary Engineering Division
Volume 98, Issue 2
Abstract
The feasibility of improving the bathing conditions of certain beaches by using pneumatic barriers both with and without chlorination was determined by an experimental system consisting of four parallel lines (three air and one water-chlorination) encompassing approximately 355 ft (108 m) of beach, under a mean tidal value of 7.2 ft (2.2 m), a complete cycle of approximately 12 hrs 15 min and a net water exchange of 1,600,000 gal (6,000 cu m). Air was supplied by two 100 scfm (2.8 standard cu m/min) compressors and was sparged through 1/64 in. or 1/32 in. (0.4 mm or 0.8 mm) orifices spaced at 30 in. (76.2 cm) intervals, at conditions assuring critical velocity across the orifices. The conclusions of these studies were: (1) Aeration alone had no statistically significant effect in lowering bacterial levels or acting as a bacterial barrier; (2) chlorination effectively reduced all bacteria levels in the basin; and (3) pneumatic curtains appear effective in containing surface debris and contamination such as oil spillage.
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Information
Published In
Journal of the Sanitary Engineering Division
Volume 98 • Issue 2 • April 1972
Pages: 379 - 396
Copyright
© 1972 American Society of Civil Engineers.
History
Published in print: Apr 1972
Published online: Feb 12, 2021
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Authors
Affiliations
Martin S. Hertzendorf
Unit Mgr.; AMF-Tech. Ctr., Stamford, CT
Joseph V. Fiore
Lab. Mgr.; AMF-Tech Ctr., Stamford, CT
Herbert E. Klei
Assoc. Prof.; Dept. of Chem. Engrg., Univ. of Connecticut, Storrs, CT
I. J. Kopelman
Dept. Food Engrg. & Biotech., Israel Inst. of Technology, Haifa, Israel
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