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Published on: October 22, 2013
Characterization of Campylobacter jejuni and Campylobacter coli isolated from waste water
W Stelzer1, H Mochmann, U Richter
1Forschungsinstitut für Hygiene und Mikrobiologie, Bad Elster, GDR.
Abstract:
The raw sewage samples of the investigated municipal sewage plant (sewage flow of about 30,000 m3/d) contained about 10(3) campylobacters/100 ml. The sewage plant reduced 80.8% of organic wastes (COD), 85.0% of colony counts (20 degrees C), 92.5% of total coliforms and 88.0% of campylobacters. The sewage plant effluent contained an average of 1.3 X 10(2) campylobacters/100 ml. About 10(10) campylobacters are discharged with the effluent of the high-output sewage plant into the receiving water every day. No reduction of the indicator bacteria was found in the activated sludge tank, there was, however, a significant reduction (94.5%) of campylobacters. In total, 94 strains were differentiated by biotyping and serotyping. 59.6% were found to be Campylobacter jejuni and 40.4% were Campylobacter coli. 8 Serotypes were found among the C. jejuni strains and 12 among C. coli. The raw sewage of the investigated oxidation pond treatment plant contained an average of 51 campylobacters/100 ml. The sewage plant effluent did not show campylobacters in any case.
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