The Effect of Ozonation On the Population of Tobrilus Sp. in Slow Sand Filter Beds

The Effect of Ozonation On the Population of Tobrilus Sp. in Slow Sand Filter Beds THE EFFECT OF OZONATION ON THE POPULATION OF TOBRILUS SP. IN SLOW SAND FILTER BEDS BY R. W. SMALL & D. B. MEEK School of Biological and Earth Sciences, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, England. Two slow sand filter beds were sampled for ncmatodes; one bed received raw lake water, the other water which had been treated with ozone to reduce water colour. The nematode community in both beds was dominated by a Tobrilus sp., but numbers were significantly reduced in the bed receiving ozonatcd water. This effect was apparent in samples from the surface of the filter and at >1 cm depth. Keywords: Ozone, filtration, water treatment, nematode. Slow sand filters are used for the treatment of potable water supplies. Their ability to remove contaminants is a combination of biological and physical processes, and many authors considcr thc former to be the more important (e.g. Twort et al., 1974). The biota of the filters includes primary producers (bacteria, algae) and consumers such as rotifers, nematodes and insect larvae (Duncan, 1988). Although Cobb first studied the nematode community of slow sand filter beds in 1918 there has been relatively little work published on the http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nematologica Brill

The Effect of Ozonation On the Population of Tobrilus Sp. in Slow Sand Filter Beds

Nematologica , Volume 42 (1): 109 – Jan 1, 1996

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Publisher
BRILL
Copyright
© 1996 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0028-2596
eISSN
1875-2926
D.O.I.
10.1163/187529296X00111
Publisher site
See Article on Publisher Site

Abstract

THE EFFECT OF OZONATION ON THE POPULATION OF TOBRILUS SP. IN SLOW SAND FILTER BEDS BY R. W. SMALL & D. B. MEEK School of Biological and Earth Sciences, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, England. Two slow sand filter beds were sampled for ncmatodes; one bed received raw lake water, the other water which had been treated with ozone to reduce water colour. The nematode community in both beds was dominated by a Tobrilus sp., but numbers were significantly reduced in the bed receiving ozonatcd water. This effect was apparent in samples from the surface of the filter and at >1 cm depth. Keywords: Ozone, filtration, water treatment, nematode. Slow sand filters are used for the treatment of potable water supplies. Their ability to remove contaminants is a combination of biological and physical processes, and many authors considcr thc former to be the more important (e.g. Twort et al., 1974). The biota of the filters includes primary producers (bacteria, algae) and consumers such as rotifers, nematodes and insect larvae (Duncan, 1988). Although Cobb first studied the nematode community of slow sand filter beds in 1918 there has been relatively little work published on the

Journal

NematologicaBrill

Published: Jan 1, 1996

Keywords: filtration; water treatment; nematode; Ozone

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