| 摘要 |
<p>There is disclosed a rotating biological contactor formed of abutting thin wall sheets arrayed along a central hollow square shaft. The contactor takes several forms. In some forms, the sheets are identical vacuum formed sheets joined face-to-face and back-to-back to define a plurality of spaced radial passages open to the perimeter of the contactor and series of concentric passages extending between, and opening into, adjacent radial passages. The identical sheets may be continuous or built up from circular sectors. In other forms, alternate flat sheets and formed sheets are employed to define a similar arrangement of concentric and radial passages. In still another form, trapazoidal formed sections are employed with flat sheets to define a series of parallel, generally concentric passages and with the radial passages being defined by the space between the side edges of the trapazoidal sections.</p> |
