Patent ID: 7455781
Filing Date: 2008-11-25
Classification: B01D

Abstract:
1. A method of destruction of volatile organic and inorganic compounds in wastewater consisting of following steps, which occur consecutively or simultaneously: adjustment of temperature and pH of said wastewater; circulating said wastewater by a pumping means via a stripping-chemisorption column; circulating a gaseous medium via a circulation circuit, which includes following elements and some features of their operation: said stripping-chemisorption column; two heat regeneration means; a blowing means; and a thermal oxidation means, said two heat regeneration means serve alternatively one—for preheating said gaseous medium before oxidation of said volatile organic and inorganic compounds' vapors in said thermal oxidation means and the other—for cooling said gaseous medium before its introduction into said stripping-chemisorption column; supply of oxygen into said gaseous medium during the course of said thermal oxidation, said supply is performed in such rate that it ensures safety and complete oxidation of said volatile organic and inorganic compounds; chemisorption of products of said thermal oxidation of said volatile organic and inorganic compounds' vapors in said stripping-chemisorption column by said wastewater; alternation of flow direction of said gaseous medium with alternating the roles of said two heat regeneration means, said alternation is performed in accordance with change of temperatures in said heat regeneration means; said alternation it is executed by said blowing means or by a system of shutting means installed on said circulation circuit.