Abstract
FOR some years a very interesting series of experiments in connection with the biological method of sewage treatment has been carried on by Dr. Dunbar, director of the Hygienisches Institut at Hamburg, and by his colleagues. Special attention has been directed to the elucidation of the sequence of changes which underlies the purification process in contact beds and percolating filters.
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Biological Treatment of Sewage . Nature 69, 139 (1903). https://doi.org/10.1038/069139a0
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DOI: https://doi.org/10.1038/069139a0