METHOD OF PURIFICATION AND INSTALLATION FOR SEWAGE WATER PURIFICATION Russian patent published in 2014 - IPC C02F1/42 B01J39/18 B01J49/00 C02F101/20 

FIELD: chemistry.

SUBSTANCE: inventions can be used for purification of sewage water, formed in the process of obtaining aromatic carboxylic acids from compounds of heavy metals. To realise the method sewage water is brought into contact with particles of chelating resin, with coefficient of homogeneity 1.4 or lower, with pH of sewage water constituting 5.1-5.9 and rate of sewage water flow being 5-14 m/hour. Value of decrease of adsorption capacity of chelating resin by Cu constitutes 11% a month or less. Regeneration of chelating resin is performed with aqueous solution of hydrogen bromide with concentration from 7.1% to 19% by weight. In preferable versions of method realisation temperature of purifies sewage water constitutes from 51°C to 59°C, adsorption capacity of chelating resin by Cu constitutes 0.5 mmol/ml or more, and regeneration liquid is redirected into the system of oxidation reaction in obtaining aromatic carboxylic acids.

EFFECT: inventions ensure efficient removal of ions of heavy metals with their low concentrations in purified sewage water.

11 cl, 3 dwg, 1 tbl, 4 ex