Patent ID: 7252760
Filing Date: 2007-08-07
Classification: B01D,C02F

Abstract:
1. A waste liquid processing apparatus comprising: a separator where a chlorine-based organic solvent contained in a waste liquid is separated; a first vaporizer, which is connected to the separator, having functions that include vaporization of the chlorine-based organic solvent remaining in the waste liquid after a solvent separation process performed by the separator; a collector, which is connected to the separator via a second vaporization gas supply line, having water for trapping, in the water, water-soluble substances contained in the waste liquid after being vaporized in a first vaporization process by the first vaporizer, a second vaporizer, which is connected to the first vaporizer via a first waste liquid supply line and a first vaporization gas supply line, for vaporizing the chlorine-based organic solvent remaining in the waste liquid after the first vaporization process and a collection process by the collector; a photo-oxidative decomposer, which is connected to the collector via a third vaporization gas supply line, where photo-oxidation is used to decompose; a chlorine-based organic gas generated in the first vaporization process and subjected to the collection process; and a chlorine-based organic gas generated in a second vaporization process by the second vaporizer; a post-treatment processor, which is connected to the photo-oxidative decomposer via a decomposition product gas supply line, for carrying out adsorption, absorption, and neutralization of a decomposition product gas generated in a photo-oxidative decomposition process by the photo-oxidative decomposer; and a control section that has a sequencer for controlling the waste liquid processing apparatus.