Coagulation sedimentation treatment equipment and coagulation sedimentation treatment method

摘要

PROBLEM TO BE SOLVED: To perform an appropriate treatment in terms of both treatment cost and treatment performance in the coagulation / precipitation treatment of water to be treated containing a dissolved organic substance without adding an excessive additive, and a coagulation / precipitation treatment apparatus. Providing a processing method. SOLUTION: In the coagulation and precipitation treatment of water to be treated in a treatment tank, the amount of organic matter corresponding to the difference between the concentration of the first organic matter contained in the water to be treated and the concentration of the second organic matter required in the subsequent stage of the treatment tank is determined. The adsorbent to be adsorbed is added to the water to be treated. According to the present invention, since the amount of the adsorbent required for the coagulation-precipitation treatment can be grasped and the treatment can be performed, there is no possibility that the adsorbent is excessively added. On the other hand, the treatment relating to the reduction of dissolved organic matter can proceed as necessary and sufficient. Therefore, it is possible to carry out appropriate processing in terms of both processing cost and processing performance. [Selection diagram] Fig. 1