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The influence of operating conditions of activated-sludge treatment on the behaviour of f2 coliphage

Published online by Cambridge University Press:  15 May 2009

S. A. Balluz  and
M. Butler
S. A. Balluz
Affiliation:
University of Surrey, Guildford, Surrey
M. Butler
Affiliation:
University of Surrey, Guildford, Surrey
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Summary

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The behaviour of f2 coliphage during activated-sludge treatment was influenced by the temperature, flow-through-time, concentration of mixed liquor suspended solids and the virus load.

The most sensitive way to detect behavioural changes was to examine the regression coefficients for the rate of uptake or loss of virus by the mixed liquor solids. This type of analysis revealed, for instance, high values when the solids concentration was high and even greater values occured when high inocula were used. At high temperature the rate of loss of virus titre after inoculation had stopped was greater than the rate of uptake of virus during inoculation although in all other conditions uptake occurred at a greater rate than the loss of virus. The coefficients were relatively low when the flow rate was increased, when the temperature was low or when the inoculum was small.

The distribution of virus between the solids and liquid fractions of the mixed liquor varied somewhat for all conditions but was notably different when (a) the plant was incubated at 5 °C when there was much less virus in the solids fraction than usual, and (b) when the inoculum was low and a much higher proportion of virus was found in the solids.

The efficiency with which virus was removed across the plant was the least-sensitive determinant of viral behaviour and the value was about the same for most treatment conditions. However, low or high inocula did result in some increased or decreased removal of virus, respectively.

Type
Research Article
Information
Journal of Hygiene , Volume 82 , Issue 2 , April 1979 , pp. 285 - 291
Copyright
Copyright © Cambridge University Press 1979

References

REFERENCES

Balluz, S. A. (1977). The behaviour of viruses in activated sludge treatment. PhD. thesis, University of Surrey.Google Scholar
Balluz, S. A., Butler, M. & Jones, H. H. (1978). The behaviour of f2 coliphage in activated sludge treatment. Journal of Hygiene 80, 237–42.CrossRefGoogle ScholarPubMed
Balluz, S. A., Jones, H. H. & Butler, M. (1977). The persistence of poliovirus in activated sludge treatment. Journal of Hygiene 78, 165–73.CrossRefGoogle ScholarPubMed
Curds, C. R. & Fey, G. J. (1969). The effect of ciliated protozoa on the fate of E. coli in the activated sludge process. Water Research 3, 853–67.CrossRefGoogle Scholar
Kott, Y., Roze, N., Sperber, S. & Betzer, N. (1974). Bacteriophages as viral pollution indicators. Water Research 8, 165–71.CrossRefGoogle Scholar
Loveday, R. (1975). Statistics; 2nd ed.of Second Course in Statistics. Cambridge University Press.Google Scholar
Malina, J. F. Jr, Ranganathan, K. R., Sagik, B. P. & Moore, B. E. (1975). Poliovirus inactivation by activated sludge. Journal of the Water Pollution Control Federation 47, 2173–83.Google ScholarPubMed
Marshall, K. C. (1976). Interfaces in Microbial Ecology. Cambridge, Mass.: Harvard University Press.CrossRefGoogle Scholar
Metcalf, T. G. (1971). Biological parameters in water transmission of viruses. In Proceedings of the 13th Water Quality Conference (Ed. Snoeyink, V., and Griffin, V.) Urbana: University of Illinois.Google Scholar
Smedberg, C. T. & Cannon, R. E. (1977). Cyanophage analysis as a biological pollution indicator – bacterial and viral. Journal of the Water Pollution Control Federation 48, 2416–26.Google Scholar
Treybal, R. E. (1968). Mass Transfer Operations, 2nd ed.Kogakusha: McGraw-Hill.Google Scholar