| Domain | Definition | ||
| Administration | (Water Quality) A large rotating cylinder possessing surface features that allow for the growth of attached microorganisms. The cylinder revolves and contacts the wastewater along one side while the other side is exposed to air, thereby maximizing the oxygenation of the water and stimulating decomposition of dissolved or suspended organic material. (references) | ||
| Environment | In aerobic sewage treatment, closely spaced discs up to 3m diameter, or random plastic media in circular wire cages, that are carried by a horizontal shaft just above the surface of the sewage and revolve with the shaft. Source: European Union. (references) | ||
Source: compiled by the editor from various references; see credits. | Top | ||
