Abstract
Granular media in high rate filters consist almost exclusively of only three types of materials: quartz sand, anthracite coal, and garnet, throughout the whole water industry. The characteristics of filter media play a major role in the optimization of granular deep-bed filtration. Following an analytical review of current practice and theory specific to filter beds field surveys were carried out at various quarries and at several industrial concerns, including plastics plants. The selected granules were tested chemically and characterized physically, before decision was made as to which type should be put to filtration tests. Experimental results from a small scale column system and their analysis based on filtration theory, enable to recommend several types of minerals that can replace the conventional filtering materials. (from paper)
| Original language | English |
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| Title of host publication | Unknown Host Publication Title |
| Publisher | Denver, U.S.A., American Water Works Association |
| ISBN (Print) | 0898674417, 9780898674415 |
| State | Published - 1988 |