| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide desiring shape of a microbe carrier made of a plastic to be used for a fluidized bed type biological wastewater treatment apparatus and provide a biological wastewater treatment method for which the microbe carrier is employed. SOLUTION: A microbe carrier 13 made of a hollow tubular plastic having the relation: outer diameter >= the tubular length: is used for a fluidized bed type biological wastewater treatment apparatus. The cross-section shape of the microbe carrier 13 is not restricted only to be circular but may be elliptical and rectangular. The desirable size of the microbe carrier is 1-10mm of both outer diameter and tubular length and the absolute specific gravity of the carrier is 0.8-1.5. In this fluidized bed type biological wastewater treatment apparatus, the treated water and the carrier can be efficiently separated from each other by a separator such as slits 7.</p> |
