Effectiveness of bromicide against Legionella pneumophila in a cooling tower
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 (United States). Savannah River Lab.
- DOE Contract Number:
- AC09-76SR00001
- OSTI ID:
- 5740983
- Report Number(s):
- DP-MS-82-85; CONF-830387-2; ON: DE83017508
- Resource Relation:
- Conference: 83. annual American Society of Microbiologists conference, New Orleans, LA, USA, 6 Mar 1983
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COOLING TOWERS
WATER TREATMENT
DISINFECTANTS
BIOLOGICAL EFFECTS
DOSE-RESPONSE RELATIONSHIPS
EXPERIMENTAL DATA
HALOGENATION
LEGIONELLA PNEUMOPHILA
ORGANIC BROMINE COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
UREA
AMIDES
BACTERIA
CARBONIC ACID DERIVATIVES
CHEMICAL REACTIONS
DATA
GERMICIDES
INFORMATION
MECHANICAL STRUCTURES
MICROORGANISMS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
TOWERS
560302* - Chemicals Metabolism & Toxicology- Microorganisms- (-1987)