| 摘要 |
<p>A centrifugal rotating disc assembly for a biological waste water treatment apparatus includes a plurality of dual discs rotatively driven while their lower halves are immersed in waste water to be biologically treated. According to the invention the disc assembly comprises suction openings in plates of the dual discs, suction chambers in the proximity thereof, a number of radially outwardly extending pleats formed in the plates to form a number of radial polygonal tubular channels and communicating passageways circumferentially across the radial polygonal tubular channels, thereby improving the permeability of the waste water through the assembly and facilitating the discharge of the waste water to achieve a remarkably high purification efficiency. According to the invention, a waste water treatment apparatus includes the centrifugal rotating disc assemblies, one of which being formed in the circumferential portions of the dual discs with turbine blades to form arcuate passageways communicating with the inside of the rotating dual discs, and at least one flow adjustable water jet nozzle supplying a water jet and at least one flow adjustable air jet nozzle supplying an air jet in opposition to the turbine blades exposed to the air above the waste water, the water jet and air jet being directed into and striking the turbine blades to rotate the disc assemblies thereby improving the exposure of the waste water to air to achieve the higher purification efficiency and saving the energy for operating the apparatus.</p> |
