| 摘要 |
<p>PURPOSE:To remove bubbles generated in an aerator by controlling each of a solenoid valve, a discharge pump and a defoaming pump by a central processor, based on a detecting signal from a bubble sensor and a detecting signal from a bell sensor. CONSTITUTION:In an aerator 3, a bubble detecting means AS for detecting generated bubbles and a scattering means 24 for scattering bubbles of a discharging tank 7 to the generated bubbles are installed. The discharge tank 7 is provided with the 1st pump P2 for discharging waste water of the discharging tank 7 and simultaneously transferring it to the scattering means 24, the 2nd pump P3 for transferring waste water to the scattering means 24 only and detecting means LS5-LS7 for detecting the water level of the discharging tank 7. And by a control means of a central processor for judging if waste water is to be transferred to the scattering means 24 by the drive of the 1st pump P2 or if waste water is to be transferred to the scattering means 24 by the drive of the 2nd pump P3, based on a bubble generating signal from the detecting means AS and corresponding to the water level of the detecting means LS5-LS7 of the discharging tank 7, the scattering means 24 is operated.</p> |
