Effectiveness of Sewage Treatment Based on Selected Faecal Bacteria Elimination in Municipal Wastewater Treatment Plant in Toruń
Z. Paluszak*, A.Ligocka, B. Breza-Boruta
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Department of Microbiology, University of Technology and Agriculture, Bernardyńska 6/8, 85-029 Bydgoszcz, Poland
Pol. J. Environ. Stud. 2003;12(3):345-349
The sewage treatment plant was monitored to determine the efficiency of technologies employed to reduce microbiological threats. Every four weeks, for a year, sewage was sampled to investigate the effects of post-mechanical and post-biological treatment. Changes in Escherichia coli, D-group streptococci and Salmonella spp. number were analyzed. The reduction of the bacteria in sewage treated mechanically was not significant and did not exceed 1 log. However, a significant reduction in an average number was found. In ad-dition, seasonal variation was found to correlate with the number of each of the selected bacteria groups.
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