High-iron bauxite-hydrogen peroxide combined water treatment method

The invention provides a high-iron bauxite-hydrogen peroxide combined water treatment method. The method comprises that high-iron bauxite and hydrogen peroxide is added into waste water to be treated, the high-iron bauxite as a catalyst and hydrogen peroxide form a Fenton-like system, hydrogen peroxide is catalyzed to form hydroxyl free radical, organic pollutants in waste water to be treated are degraded and flocculation and settling efficiency is improved, waste water subjected to organic pollutant flocculation is stood for deposition treatment, the supernatant is clear water without organic pollutants, and the high-iron bauxite in the precipitates is washed and treated and can be reused in waste water to be treated. The high-iron bauxite-hydrogen peroxide combined water treatment method solves the problem that the conventional Fenton reaction only occurs under acidic conditions and cannot recycle the catalyst. Waste water treated by the high-iron bauxite-hydrogen peroxide combined water treatment method has COD content stably controlled to 100mg/L or less and satisfies the national industry sewage integrated discharge first-order standard.