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Chapter 126 : Control of Proliferation Risk in Cooling Water Systems

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Control of Proliferation Risk in Cooling Water Systems, Page 1 of 2

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Abstract:

Legionnaires’ disease is a potentially fatal form of pneumonia caused by the bacterium . control in cooling water systems depends on many parameters (conception, hydraulic management, maintenance) favorable to biological deposits. Any variation in the parameters measured (microbiological, physicochemical and environmental parameters) made it possible to identify and destroy growth sources. The cooling tower system is an ecosystem in which is always present and can proliferate any time of year. The percentage of samples in which is detected increased after April. A meticulous analysis of the risks made it possible to identify and manage all the factors of risk of proliferation of . The risk management cannot be carried out without taking account of the protozoa which are resistant to biocides. To fight continuously against the formation of biofilm seems to be the method most adapted to fight effectively against the proliferation of and limit the use of biocides.

Citation: Merchat M, Deumier A. 2006. Control of Proliferation Risk in Cooling Water Systems, p 522-525. In Cianciotto N, Kwaik Y, Edelstein P, Fields B, Geary D, Harrison T, Joseph C, Ratcliff R, Stout J, Swanson M (ed), . ASM Press, Washington, DC. doi: 10.1128/9781555815660.ch126

Key Concept Ranking

Surface Water
0.577501
Legionella
0.4731972
Risk Management
0.4332157
0.577501
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Figures

Image of FIGURE 1
FIGURE 1

Biodispersant effect on water quality.

Citation: Merchat M, Deumier A. 2006. Control of Proliferation Risk in Cooling Water Systems, p 522-525. In Cianciotto N, Kwaik Y, Edelstein P, Fields B, Geary D, Harrison T, Joseph C, Ratcliff R, Stout J, Swanson M (ed), . ASM Press, Washington, DC. doi: 10.1128/9781555815660.ch126
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Image of FIGURE 2
FIGURE 2

sp. concentration by year on three sites.

Citation: Merchat M, Deumier A. 2006. Control of Proliferation Risk in Cooling Water Systems, p 522-525. In Cianciotto N, Kwaik Y, Edelstein P, Fields B, Geary D, Harrison T, Joseph C, Ratcliff R, Stout J, Swanson M (ed), . ASM Press, Washington, DC. doi: 10.1128/9781555815660.ch126
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References

/content/book/10.1128/9781555815660.ch126
1. Berk, S. G.,, R. S. Ting,, G. W. Turner, and, R. J. Ashburn. 1998. Production of respirable vesicles containing live Legionella pneumophila cells by two Acanthamoeba spp. 64:1:279286.
2. Fraser, D. W.,, T. R. Tasi,, W. Orenstein,, W. E. Parkin,, H. J. Beecham, and, R. G. Sharrar. 1997. Legionnaires’ disease: description of an epidemic of pneumonia N. Engl. J. Med. 297: 11891197.
3. Merchat, M. Guide de formation à la gestion du risque de prolifération des légionelles dans les installations de refroidissement par dispersion d’eau dans un flux d’air (http://www.ecologie.gouv.fr/article.php3?id_article=3734).
4. Merchat, M. 2005. Etude de la toxicité des bio-cides dans les circuits de refroidissement et dans les rejets à l'égout, Rapport d'étude AESN.
5. Srikanth, S., and, S. G. Berk. 1993. Stimulatory effect of cooling tower biocides on amoebae. Appl. Environ. Microbiol. 59:10:32453249.

Tables

Generic image for table
TABLE 1

Water quality for make-up and in the circuit

Citation: Merchat M, Deumier A. 2006. Control of Proliferation Risk in Cooling Water Systems, p 522-525. In Cianciotto N, Kwaik Y, Edelstein P, Fields B, Geary D, Harrison T, Joseph C, Ratcliff R, Stout J, Swanson M (ed), . ASM Press, Washington, DC. doi: 10.1128/9781555815660.ch126

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