FIELD: chemistry.
SUBSTANCE: invention relates to wastewater treatment processes containing dissolved organic contaminants by wet oxidation, specifically by supercritical aqueous oxidation, and can be used for purifying domestic, process, surface, agricultural wastewater. The method for purifying wastewater from dissolved organic contaminants includes treatment of wastewater under the supercritical aqueous oxidation conditions to the complete oxidation of organic compounds with the production of a gas stream, purified water stream and heat. Before oxidation, fine buckwheat or sunflower husk is introduced in wastewater with a particle size of 50-200 mcm, the resulting suspension is served on the membrane concentration obtaining purified water and a wastewater concentrate supplied to the device of the supercritical aqueous oxidation.
EFFECT: reducing energy costs and increasing economic efficiency.
2 dwg, 1 tbl
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