| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a water treatment method and apparatus which estimates the dominance of Bacillus bacteria in real time and can control water to be treated at a dominant state of the Bacillus bacteria in real time on the basis of the estimation. <P>SOLUTION: When the water to be treated is biologically treated via making the Bacillus bacteria dominant, the correlation is obtained in advance between the value of the water quality index of the biologically treated water and the amount of the Bacillus bacteria. Then the value of the water quality index is measured and, from the measured value thereof, the amount of the Bacillus bacteria in the measured water is estimated resting on the correlation. Based on the estimated amount of the Bacillus bacteria, the amount of the sludge to be returned or the amount of the Bacillus bacteria to be supplied is obtained which is required for making the Bacillus bacteria dominant. Additionally, a return sludge pump or a Bacillus bacteria supplying device is controlled according to the obtained amount of the sludge or that of the Bacillus bacteria. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
