Method of purification of wastewater containing phenol, of the derivatives of phenol or of the phenol and formaldehyde

摘要

P & this process is of the type in which it is used for the hydrogen peroxide. / p & & p & according to the invention, the waste water by the hydrogen peroxide in the presence of iron or of copper metal. It is advantageously added, before the hydrogen peroxide, of 0,5 to 2 g / l of ethylenediamine - tetraacetate of sodium and the iron (iii) trihydrate. The present invention finds an advantageous application with the waste water containing the o - and the p - cresol, of the t - (-) phenol and hydroquinone. / p