Waste liquid processing method and waste liquid processing apparatus using the same

摘要

A waste liquid processing method comprising a solvent separation process for separating a chlorine-based organic solvent contained in a waste liquid; a first vaporization process that includes vaporization of the chlorine-based organic solvent remaining in the waste liquid after the solvent separation process; a collection process for collecting substances other than the chlorine-based organic solvent contained in the waste liquid after being vaporized in the first vaporization process; a second vaporization process for vaporizing the chlorine-based organic solvent remaining in the waste liquid after the first vaporization process and the collection process; a photo-oxidative decomposition process where photo-oxidation is used to decompose a chlorine-based organic gas generated in the first vaporization process and in the second vaporization process, and a post-treatment process for carrying out adsorption, absorption, and neutralization of a decomposition product gas generated in the photo-oxidative decomposition process.