| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a low-cost wastewater treatment method and apparatus capable of making energy needed for treatment effective, preventing a coating material from sticking to pipes preventing wastewater from overflowing from a water tank due to sedimentation or foaming, preventing the environment deterioration, further capable of preventing the increase of a salt concentration caused by using agents. <P>SOLUTION: In the method for treating wastewater including at least an aqueous coating material, the wastewater is heated, water including low temperature boiling component in the wastewater is evaporated, high temperature boiling components are condensed, at least a part of the thermal energy of the evaporated water is used for heating the wastewater, the evaporated water is recovered and returned to the wastewater. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
