Method for continuous degradation of organic waste water by two-stage microwave catalytic reaction

The invention relates to a method for degrading waste water by catalytic oxidation under microwave irradiation by using a ferrite microwave catalyst. The technical scheme of the invention is that: ferrite is used as a catalyst, or one or more than one metal oxide such as ferrite is loaded on active carbon; then the catalyst is added into organic waste water; and the organic waste water is degraded by microwave irradiation; the method of the invention can also perform continuous treatment of waste water by a solid-loaded microwave catalyst. The invention has the following advantages of simple and practical operation, low investment and operation cost, less land occupation, thorough degradation, wide concentration range of the degraded organic waste water, no secondary pollution, and suitability for organic waste water treatment in industries of printing and dyeing, papermaking, chemical engineering, pharmacy, etc.