Analysis on the Structure of Bacteria Communities from a Fermentative Pharmaceutical Factory Sewage Outfall: Structure and Resistance of Bacteria from Pharmaceutical Sewage

To investigate the species and distribution of bacteria in a habitat that was polluted by a fermentative pharmaceutical sewage. The bacteria were isolated from waste water, riverbed soil and sludge by nutrient agar and nutrient broth, which were collected from the sewage outfall of a fermentative pharmaceutical factory. The bacteria were identified by Gram staining and biochemical tests, while the bacterial community diversity had been analyzed. The results showed that logarithm of the total number of viable cells (TVC) in effluent samples was 5.348,which was higher than 5.136 in riverbed soil and 5.246 in sludge. 19 genera and 22 species had been isolated from water samples and riverbed soil samples including 14 genera and 16 species, 8genera and 10species. Shannon-Wiener (H) and Simpson (D) in water sample is 2.902 and 0.9422, which was higher than 2.0253 and 0.8600 in riverbed and 2.5993 and 0.9216 in sludge. Pielou (J) was 0.9856, 0.9849 and 0.9740 in water samples, riverbed samples and sludge samples respectively. Total number of bacteria and diversity in water samples was higher than riverbed and sludge.