Catalytic wet oxidation treatment reaction tower and method and device for treating high-concentration organic wastewater by using same

The invention relates to a catalytic wet oxidation treatment reaction tower and a method and device for treating high-concentration organic wastewater by using the same. The high-concentration organic wastewater (having COD greater than or equal to 5000 mg/L) successively passes through a raw water storage tank (1), a high-pressure pump (2), a filter (3), a high-pressure buffer tank (4) and a heat exchanger (5), then passes through high-pressure liquid distributors (8) arranged at the bottom of the reaction tower (7) and is contacted with and subjected to a full reaction with high-pressure air, which is compressed by an air compressor (6) and passes through high-pressure gas distributors (9), in the reaction tower (7); then the mixture enters a gas-liquid separation tank (10); a separated gas phase is treated by a tail gas absorption tower (11) and reaches standards and is discharged; a separated aqueous phase reaches standards and is discharged in a unified way through a wastewater buffer tank (12). The method and the device can continuously and efficiently treat various high-concentration and difficult-degradation organic wastewater and allow all the COD removal rates to be more than 95%, successfully achieve industrialized development of a CWAO treatment technology, and have quite important significance on substantially promotion and application of the technology in the environmental-protection field.