Dias, F. F. ; Bhat, J. V. (1965) Microbial Ecology of activated sludge II. Bacteriophages, Bdellovibrio, Coliforms, and other organisms Applied and Environmental Microbiology, 13 (2). pp. 257-261. ISSN 0099-2240
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Official URL: http://aem.asm.org/cgi/content/abstract/13/2/257
Abstract
A comparative estimation of the coliform population of raw sewage, activated sludge, and the effluent derived therefrom revealed that raw sewage had a preponderance of Escherichia coli (75%), as compared with 25 and 30%, respectively, in sludge and effluent. Nitrogen-free mannitol-sucrose enrichments of activated sludge resulted in the isolation of Azotobacter agilis, Aerobacter aerogenes, Corynebacterium laevaniformans, and an Achromabacter species. Sludge had a large population of C. laevaniformans and A. aerogenes but not of Azotobacter. The bacterial parasites, Bdellovibrio and bacteriophages, were not active during activated-sludge treatment. A 10-fold reduction in phage content occurred after 2 hr of aeration, but the Bdellovibrio population was unaffected.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Society for Microbiology. |
ID Code: | 4578 |
Deposited On: | 18 Oct 2010 07:29 |
Last Modified: | 16 May 2016 15:12 |
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