DBPapers
DOI: 10.5593/SGEM2014/B13/S4.115

METHODS OF PHYSICAL TREATMENT OF THE SEWAGE SLUDGE SAMPLE CONTAINING PAHS FOCUSED ON THE ORIGINAL MICROBIAL CONSORTIA REMOVAL

K. Spakovska, H. Otoupalikova, R. Kucerova, H. Kasakova
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-09-4 / ISSN 1314-2704, June 19-25, 2014, Book 1, Vol. 3, 903-910 pp

ABSTRACT
For determination of the biodegradation efficiency of PAHs contained in sewage sludge using a selected bacterial strain, the microbiological purity arrangement is essential step in procedure of input sample treatment. Initial microflora poses undesirable effects for this type of research. Therefore, samples submitted for selective degradation using single selected strain is necessary to pre-treat. The use of physical methods appears to be an appropriate way of laboratory treatment with regard to the costs and time demands. The aim of the research was to compare the different methods of the initial microorganisms reduction with respect to the amount of original PAH content and the amount of PAH content after the physical treatment of the sample using selected method. In the presented study, the methods are compared with regard to the effectiveness of treatment, time demands and the undesirable reduction of PAHs. Methods of ionizing radiation, tyndallization, steam sterilization and deep freezing were tested in the experiment. The results prove the influence of thermal methods on the amount of PAHs among investigated sludge samples after different types of treatment.

Keywords: sludge, pre-treatment, physical methods, PAH

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