Process for sewage water purification from methylene blue

The invention relates to processes for removal of organic dyes from sewage waters, particularly a process for sewage water purification from methylene blue. The process includes the catalytic oxidation by oxygen barbotage in the water at a temperature of 30...50?C and a gas pressure of 2 atm during 2 hours, where as catalyst is used activated coal obtained from nutshell, with a content of basic functional groups with a concentration of 0.555 mg/equiv./g and the transition pores surface of 410 m2/g. Inventia se refera la procedeele de eliminare a colorantilor organici din apele reziduale, in particular la un procedeu de purificare a apelor reziduale de albastru de metilen. Procedeul include oxidarea catalitica prin barbotare cu oxigen a apei la o temperatura de 30...50°C si o presiune a gazului de 2 atm timp de 2 ore, unde in calitate de catalizator se utilizeaza carbune activ obtinut din coji de nuci, cu un continut de grupari functionale bazice cu concentratia de 0,555 mg echiv./g si suprafata mezoporilor de 410 m2/g.