Patent ID: 9132306
Filing Date: 2015-09-15
Classification: A62D

Abstract:
1. A method for mechanochemical treatment of solid wastes containing perfluorinated or polyfluorinated compounds, comprising the following steps: mixing the solid wastes containing perfluorinated or polyfluorinated compounds with a defluorination reagent under a normal temperature and a pressure condition to form a mixture; putting the mixture into a dry ball milling pot of a planetary high-energy ball milling reactor, adding a plurality of milling balls into the dry ball milling pot and sealing the dry ball milling pot tight; securing the dry ball milling pot on a ball mill and starting a milling process at a revolution rate of 200-400 rpm; changing a direction of the revolution every 30 minutes until the perfluorinated or polyfluorinated compounds are completely degraded and defluorinated through a mechanochemical reaction; wherein the defluorination reagent is solid potassium hydroxide (KOH) and a mass ratio between the defluorination reagent and the perfluorinated or polyfluorinated compounds is 5-95:1.