| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rainwater drainage control device including a model for accurately computing a pollution load deposition amount on line from a measured outflow pollution load amount. Ž<P>SOLUTION: Inflow into a pumping well 2 is obtained in a predetermined time cycle from the measured values of a sensor 22 for measuring the inflow into the pumping well 2 from a sewer, and the generated load amount of pollution is obtained in the time cycle from measured values of a water quality sensor 21 to the inflow water flowing into the pumping well 2. The load amount of pollution deposited in a channel to the pumping well 2 is obtained in the time cycle from the generated load amount at a certain time and a value, exceeding a preset limit flow rate value, of the inflow of sewage at the certain time. The inflow into the pumping well 2 is predicted from the inflow measured value and the amount of rainfall measured by a rain gauge 23 in a preset object drainage basin, and a predicted value of the generated load amount of pollution is obtained from the deposition load amount at the certain time and a value, exceeding the preset limit flow rate value, of predicted inflow. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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