State and evolution of the microbiological pollution of the lake of reghaïa

K. Delleci, S. Sayoud, K. Louhab

Abstract


Abstract: The lake of reghaïa is a fresh water tank, which represents a very vulnerable link for  maintenance of the balance in the ecosystem, but currently it receives a very important volume of liquid-effluents generated by the industrial activities which disturbs the balance of the aquatic life opposite fauna and the flora, the micro-organisms represent a biological form of pollution conveyed by the industrial effluents ( sewage), the objective of our study is the identification, the quantitative estimate and the follow-up of the seasonal dynamics of the various communities of the micro-organisms which develop in this tank, for this purpose 3 series of taking away were carried out between the month of December 2015 and July 2016, in order to follow the development and the proliferation of certain micro-organisms of the coliforms type fecal and streptococcus fecal which are, Escherichia coli (colon bacillus) (enterobactery) and the streptococcus ones of group D (enterococcus), where the enumeration was carried out by the method NP and the presence of the salmonella and vibrio-choleric.

   The results gave very high concentrations which exceeds 15*104 for the coli bacilli and between 0-6 for the enterococcus ones, with absence of salmonella and choleric vibrio, which allows us to classify our water category 4 (water of bad quality), and the dynamics of the bacteria follows a seasonal cycle which varies according to the flow and the nature of the effluents rejected towards the lake (physico-chemical characteristics) of water.


Full Text:

PDF

References


Seasonal evolution of the structure of the microbial Communities in one Drinking water tank. Christian amblard, Gilles bourdier, Jean-François carrias, Nadine maurin and Catherine quiblier. Laboratory of Comparre Biology of Protistes, URA CNRS 1944 - Universit6 Blaise Pascal Clermont II, 63177 Aubiere Cedex, France.

Grabow W.O.K., Neubrech T.E., Holtzhausen C.S., Jofre J., Bactgeriodes fragilis and Escherichia coli bacteriophages: excretion by humans and animals, Water Sci. Technol. 3 1 (1984) 223-230.

Havelaar A.H., Furuse K., Hogeboom W.M., bacteriophages and indicator bacteria in human and animal faeces, J. Appl. Bacterial. 60 (1986) 3225-262.

Havelaar A.H., Pot-Hogeboom W.M., Furuse K., Pot R., Hormann M.P., F-specific, RNA bacteriophages and sensitive host strains in faeces and wastewater of human and animal origin, J. Appl. Bacterial 69 (1990) 30-37.

Joffre J., Les bacteriophages dans les milieux hydriques, in: Schwartzbrod L. (Cd), Virologie des milieux hydriques, Tee Dot-Lavoisier, Paris, p 253-274, 1991.

Kai S., Watanabe S., Furuse K., Osawa A., Bacteroides bacteriophages isolated from human faeces, Microbial. Immunol. 29 (1985) 895-899.

Viruses of waste water and their elimination with the turns of the polluted liquid waste processings Mohammed Benyahya *ab, Jacques Bohatierb, Hem-i Laveranc, Jean Senaudb, Mohammed Ettayebid Al Akhawayn University in Ifrane, Maroc.

Hurst C.J., ate of virus during wastewater sludge treatment processes, CRC. Crit. Rev. Environ. Cont. 18 (1989) 317-343.

Schwartzbrod L., Viruses and mediums hydrous, in: Schwartzbrod L. (Cd), Virology of the hydrous mediums, Tee & Dowry-Lavoisier, Paris, 1991, p. l-28.

DE JONCKHEERE J, VANDIJCK P., VAN DE VOORDE H. The effect of thermal pollution on the distribution of N aegleria fowleri. J. Hyg. Cam., 1975, 75, 7-13.

GRIFFIN J.L. Temperature tolerance'of pathogenic and non pathogenic free-living amoeba. Science, 1972, 178, 869-870.

12.Creteur X. (1998). Pollution microbienne des eaux: origine et mécanismes, Mémoire D.U., Eau et environnement, D.E.P., Univ.De Picardie Jules verne, Amiens, France,60p.


Refbacks

  • There are currently no refbacks.