| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a water quality measuring method capable of corresponding to various foreign matters, capable of certainly removing the foreign matters to stably measure water quality over a long period of time and not causing the measuring error of water quality. <P>SOLUTION: The water quality measuring method is performed using a measuring tank 32 for receiving the wastewater of a biological treatment tank (wastewater storage tank) 4 to store a definite amount of the wastewater, a water quality detector 33 for measuring the quality of the wastewater of the measuring tank 32 and a foreign matter separation means 14 having first and second separation tanks 17 and 19 for internally revolving the wastewater of the biological treatment tank 4 allowed to flow in the measuring tank 32 to separate the foreign matters and constituted so that the wastewater is taken in the first separation tank 17 from the biological tank 4, primary treated water, from which the foreign matters are removed, is allowed to flow in the second separation tank 19 from the first separation tank 17 to further separate the foreign matters, the separate foreign matters from the first and second separation tanks 17 and 19 are returned to the biological treatment tank 4, secondary treated water, from which the foreign matters are separated in the second separation tank 19 is allowed to flow in the measuring tank 32 to store a definite amount of the secondary treated water and the quality of the wastewater of the biological treatment tank 4 is measured. <P>COPYRIGHT: (C)2007,JPO&INPIT |
