| 摘要 |
<p>PURPOSE: An inner circulation type aerobic biofilm reactor is provided to solve the difficulty of the application of media to the aerobic tanks of conventional wastewater treatment process. The application of the inner circulation type aerobic biofilm reactor is also expected to solve the short HRT, shutting down under extremely high loading rate, and clogging problems of packed-bed reactors. CONSTITUTION: An inner circulation type aerobic biofilm reactor includes a biological packed-bed reactor (2) located in an aerobic tank (10), media (3) packed into the biological packed-bed reactor, a net (4) used to prevent media from draining away, a diffuser (5,6) used to supply air. The biological packed-bed reactor is located below the surface of the aerobic tank. The diffuser (6) beneath the biological packed-bed reactor is operated to supply much air than other diffusers (5). As a result of this operation, two currents of water, upflow (2) and downflow (9), is made in the aerobic tank. These currents help to recycle treated water from the biological packed-bed reactor. Expected results is achieved by this mechanism.</p> |
