ORGANIC SOLVENT DESORPTION METHOD AND ORGANIC SOLVENT DESORBING DEVICE

摘要

PROBLEM TO BE SOLVED: To facilitate work for removing an organic solvent mixed in concentrated water by securing a high desorption rate and reducing the quantity of concentrated water generated after desorption when desorbing the organic solvent from an adsorbent having adsorbed organic solvent.

SOLUTION: An organic solvent desorbing device includes; a desorption tank 1 filled with adsorbents having adsorbed organic solvents; a blower 2 and a heater 3 for supplying heated dry gas to the desorption tank 1; and a superheated steam generator 6 which supplies superheated steam to the desorption tank 1. An organic solvent desorption method carries out a first desorbing step in which the organic solvents are desorbed by supplying the dry gas to the adsorbents, and thereafter, a second desorbing step in which the organic solvents are further desorbed by supplying superheated steam to the adsorbents.

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