Effectiveness of bromicide against Legionella pneumophila in a cooling tower

Technical Report · Sat Jan 01 04:00:00 EST 1983

DOI:https://doi.org/10.2172/5740983· OSTI ID:5740983

Fliermans, C. B.; Harvey, R. S.

Cooling towers are considered to be man-made amplifiers of Legionella. Thus the proper maintenance and choice of biocides is important. The only biocide that has thus far been shown to be effective in field tests is the judicious use of chlorination. Perturbation studies were conducted on an industrial cooling tower shown to contain Legionella, using 1-bromo-3-chloro-5,5-dimethylhydantoin (Bromicide, Great Lakes Chemical Corp.). At the manufacturer's recommended concentrations neither the density nor the activity of Legionella was affected. At concentrations greater than 2.0 ppM free residual, the Bromicide was not effective in reducing Legionella to source water concentrations, nor was it effective in reducing the INT activity of the bacterium in situ. The data indicate that at concentrations up to 2.0 ppM, Bromicide is not effective in these tower studies. 23 references, 3 tables.

• Research Organization: Du Pont de Nemours (E.I.) and Co., Aiken, SC (USA). Savannah River Lab.
• DOE Contract Number: AC09-76SR00001
• OSTI ID: 5740983
• Report Number(s): DP-MS-82-85; CONF-830387-2; ON: DE83017508
• Country of Publication: United States
• Language: English

Related Subjects

560302* -- Chemicals Metabolism & Toxicology-- Microorganisms-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AMIDES
BACTERIA
BIOLOGICAL EFFECTS
CARBONIC ACID DERIVATIVES
CHEMICAL REACTIONS
COOLING TOWERS
DATA
DISINFECTANTS
DOSE-RESPONSE RELATIONSHIPS
EXPERIMENTAL DATA
GERMICIDES
HALOGENATION
INFORMATION
LEGIONELLA PNEUMOPHILA
MECHANICAL STRUCTURES
MICROORGANISMS
NUMERICAL DATA
ORGANIC BROMINE COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
TOWERS
UREA
WATER TREATMENT