[Preliminary tests of the influence of wastewaters from sugar-factories upon the numbers of intestinal bacteria in water (author's transl)].

This work presents the results of experiments dealing with the influence of wastewaters from 2 sugar factories in the Czechoslovakia upon some representatives of intestinal bacteria: E. coli, C. feundii, E. aerogenes, S. anatum, S. schottmuelleri, S. typhi-murium, Sh. sonnei and Str. faecalis. The experiments were carried out at 30, 20 and 10 degrees C. The experiments have shown that the presterilized waste-water from sugar factory (in Bohemia and in Slovakia) caused rapid multiplication of the test-organisms: E. coli, C. freundii, E. aerogenes, S. anatum, S. schottmuelleri, S. typhi-murium, less by Sh. sonnei and Str. faecalis, at 30, 20 and 10 degrees C. The intensity of multiplication was direct proportional to the concentration of waste water and was effective to dilution 1:1000 (diluted with presterilized surface waters Vltava, Danube).