Izvestiya of Saratov University.

Chemistry. Biology. Ecology

ISSN 1816-9775 (Print)
ISSN 2541-8971 (Online)

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Bacteria Fouling in the Systems of Technical and Circulating Water Supply of the Novovoronezh Nuclear Power Station

Glinskaya Elena V., Saratov State University
Saveleva Alexandra S., Saratov State University
Voronin Maksim Yu., Saratov State University

The paper presents the results of a study of microorganisms involved in the biofouling of technical and recycled water supply systems of the Novovoronezh nuclear power plant. Sampling was carried out at the following facilities: onshore pumping station (BPS), engine room (MH), spray pool (BB), central pumping station (CNS). The number of microorganisms that make up biofilms varied from 104 to 107 microbial cells in 1 ml. The species diversity at each object is represented by 2 to 3 types of bacteria. The prevalence index of Kurthia zopfii is 50%, Microbacterim lacticum is 25%, Nocardiodes simplex is 75%, Azomonas agilis is 50%, Bacillus halmapalus is 25%. Isolated microorganisms are saprophytic chemorganotrophic mesophilic aerobic and facultative anaerobic bacteria. Chemolithotrophic bacteria from the group of iron bacteria that form biofouling and are in association are found in all samples. Isolated microorganisms are represented by bacterial species that are widespread in natural aquatic and soil ecological systems.

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