| 摘要 |
<p>An extended surface area filter element construction including a central body 1 mounting a plurality of additional surfaces 2, serving to provide a greatly increased surface area as compared with a central body of the same size but not having additional surfaces. Preferably the additional surfaces are formed by surfaces such as fins laterally or radially extending from the central body. Each fin may have a stepwise or serrated formation at its free edge. The extended surface filter elements may be formed of moulded plastics and the central body may be formed as a cylindrical tubular core from which project a plurality of the laterally or radially directed fins. The extended surface area filter elements may be utilized in an aerobic filtration plant.</p> |
