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Microbial contamination of the sand from the wastewater treatment plants

Author

Listed:
  • M. Szostková

    (Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of Agronomy, Mendel University in Brno, Brno, Czech Republic)

  • T. Vítěz

    (Department of Agriculture, Food and Environmental Engineering, Faculty of Agronomy, Mendel University in Brno, Brno, Czech Republic)

Abstract

Primary treatment of domestic wastewater represents an extensive range of physical and chemical activities which directly or indirectly affect functionality of the treatment plant as a whole. The aforementioned effect might be rather significant in many respects. However, an incorrectly designed or operated primary treatment might result in an unnecessary increase of operating costs and, principally, a negative impact on the biological level or sludge treatment and disposal. The subject matter of this contribution comprises contemplations related to functionality of this level, both with respect to its relation to functionality of wastewater treatment plant and the matter of created waste in case of which disposal has become more and more expensive and complicated. The measurement results show that sewage sand from different wastewater treatment plants contains different amount of organic material 1.19-82%. The content of the organic material relates to the content of microorganisms which oscillated in a range of 1.53×104-7.34×106 CFU/g for coliform bacteria including Escherichia coli, 5.57×101-4.36×104 CFU/g for enterococci, and 3.13×102-2.19×105 CFU/g for faecal coliform bacteria.

Suggested Citation

  • M. Szostková & T. Vítěz, 2010. "Microbial contamination of the sand from the wastewater treatment plants," Research in Agricultural Engineering, Czech Academy of Agricultural Sciences, vol. 56(4), pages 147-153.
    • Handle: RePEc:caa:jnlrae:v:56:y:2010:i:4:id:21-2009-rae
    DOI: 10.17221/21/2009-RAE
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