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Removal of Algae in a Slow Sand Filter using Ecological Property of Macrobenthos (Pomacea canaliculata)
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 Title & Authors
Removal of Algae in a Slow Sand Filter using Ecological Property of Macrobenthos (Pomacea canaliculata)
Son, Hee-Jong;
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After identifying species by collecting the suspended and attached algae mat inhabiting in the slow sand-filter, Spirogyra sp., Mougeotia sp. and Closterium sp. were main green algae and Synedra sp. was diatom algae. Among them green algae Spirogyra sp. was dominant species. A result of observing the life mode of apple snail for a month after introducing into the slow sand-filter, apple snail eggs were discovered on the filter walls 2 weeks after introducing, 4 weeks later lots of eggs were observed all of the slow sand-filter walls, it means there is no problem for apple snail to live in the slow sand-filter. The observation result for algae removal potential by introduced apple snail after 2 months later, slow sand-filter where apple snail were introduced, a few algal mat were observed. On the other hand, no introduced apple snail into the slow sand-filter, lots of suspended algal mats were formed in the water and attached algal mats on the sand surface as well, these algal mat induced much of operating problems.
Slow sand filter;Apple snail;Algal mat;Algae removal;
 Cited by
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