METHOD OF OBTAINING OF CATALYST FOR SEWAGE CLEANING FROM PHENOL, CATALYST OBTAINED BY THIS METHOD, AND METHOD OF CLEANING OF SEWAGE FROM PHENOL USING THIS CATALYST Russian patent published in 2015 - IPC C02F1/78 B01J21/00 B22F3/23 C02F101/30 

FIELD: metallurgy.

SUBSTANCE: method of obtaining of the catalyst for sewage cleaning from phenol comprises a nitrogen hardening at the nitrogen pressure 1.0-12.0 MPa ferroalloy pre-milled down to the particle size below 160 mcm in a mode of self-sustained filtration burning and additional nitrogen hardening in the mode of volumetric burning at the nitrogen pressure 0.15-10.0 MPa within 0.5-1.0 h. A ferroalloy is the aluminium ferrosilicon. Into the grinded ferroalloy an aluminium oxide is added in amount 5.0-30.0 wt %. The obtained azotised alloy is crushed. The fraction of granules with the size 0.315-2.5 mm is separated and the sialon-based catalyst is obtained. The obtained catalyst is dipped into waste water with simultaneous feeding of ozone-air mix at a rate of 0.5-1.5 l/min within 5-10 minutes with the ozone content 0.01-0.02 g/l.

EFFECT: group of inventions allows to obtain a composition with high catalytic activity, shorten time of sewage treatment at keeping of high degree of cleaning and resource of the catalyst.

3 cl, 1 tbl, 8 ex