| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a liquid treatment method and apparatus which enable the exhibition of an appropriate treatment capacity of microorganisms by controlling the microorganism concentration in a microorganism treatment tank at a low running cost. <P>SOLUTION: In a wastewater treatment apparatus as the liquid treatment apparatus, a signal representing the microorganism concentration from a microorganism concentration meter 6 measuring the microorganism concentration of treated water in an aeration tank 22 is inputted into a microorganism concentration controller 7. A control signal is sent from the microorganism concentration controller 7 to circulating pumps 10, 11 to control the numbers of revolutions of the circulating pumps 10, 11. Thereby the amount of micro-nano bubbles generated by micro-nano bubble generators 8, 9 is controlled according to the microorganism concentration of the treated water in the aeration tank 22 to control the microorganism concentration in the aeration tank 22, which enables the proper control of the treatment capacity of microorganisms required for the aeration tank 22, so that wastewater treatment can be efficiently carried out. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
