| 摘要 |
<p>The present invention relates to a sewage treatment control device and metho d and a sewage treatment system using the same, it is possible to appreciate abnormality or not of a measured value that may occur when a sensor in a measuring unit is abnormally operated; it is possible to replace an expensive measuring unit with an inexpensive measuring unit and thus dramatically reduce the installation cos t for the measuring units; the number of measuring units can be minimized to easily perform the maintenance; occurrence of failure can be minimized; and it is possible to safely and precisely control a sewage treatment process. To this end, the sewage treatment control device comprises measuring units having sensors for inspecting specific components in water, respectively; validity verification units connected to the measuring units to determine validities for measured component values, respectively; target value setting units connected to the validity verification units to s et target values for the component values measured in the measuring units, respectively; a manual setting unit for setting a target value depending on a component value inputted by an operator; a signal selection unit for allowing either one of the respective target value setting units or the manual setting unitto be connected; a PID control unit for performing proportional, integral or derivative action for the target value inputted from the signal selection unit to convert the target value into a control signal; and a manipulation unit for manipulating a sewage treatment apparatus depending on the control signal converted in the PID control unit.</p> |
