METHOD FOR PROCESSING WASTE SOLUTION IN PLATE-MAKING PROCESS OF PHOTOSENSITIVE LITHOGRAPHIC PRINTING PLATE

摘要

Disclosed is a method for processing waste solution in the plate-making process of a photosensitive lithographic printing plate, wherein the maintenance performance of the equipment is excellent. Specifically disclosed is a method for processing waste solution in the plate-making process, wherein the waste solution in the plate-making process, which is discharged when the plate-making process of a photosensitive lithographic printing plate is carried out using a developer liquid for a photosensitive lithographic printing plate, said developer liquid being characterized by containing at least one sugar selected from non-reducing sugars and at least one base without containing a silicate and by having a pH within the range of 9.0-13.5, is evaporated and concentrated by an evaporative concentration apparatus, thereby being separated into water vapor and the dissolved component. In the method for processing waste solution in the plate-making process, the waste solution in the plate-making process is heated by a heating means in an evaporation pot that is provided with base resistance and the water vapor separated from the waste solution in the plate-making process is taken out of the evaporation pot and condensed in a cooling means, thereby being turned into reclaimed water.