The role of insects in sewage disposal beds

R. L. Usinger and W. R. Kellen

Hilgardia, 1955, vol. 23, issue 10

Abstract: Many species of insects are found in oxidation ponds, the most abundant and important of which are the larvae of midges which burrow into bottom deposits of the ponds. They help to keep the bottom sludges in good condition, aid in removing suspended materials from the substrate undergoing purification, and thereby reduce the biochemical oxidation demand of the final effluent. Laboratory experimental results and field observations are presented.

Keywords: Environmental; Economics; and; Policy (search for similar items in EconPapers)
Date: 1955
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Persistent link: https://EconPapers.repec.org/RePEc:ags:hilgar:381478

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