METHOD OF ENHANCING BACTERICIDAL PROPERTIES OF HYDROGEN PEROXIDE USED TO DISINFECT DRINKING WATER Russian patent published in 2006 - IPC C02F1/50 C02F1/72 

FIELD: water treatment processes.

SUBSTANCE: invention relates to drinking water treatment processes and can be used to disinfect drinking water in water supply systems of residential sites and food industry enterprises. Bactericidal activity of hydrogen peroxide is enhanced by bringing hydrogen peroxide-treated water into contact with heterogeneous catalyst containing mixture of pyrolusite and rutile powders used in weight proportion (2-4):1. Catalyst may further contain flotation cinder - sulfuric acid production waste - in such amount that weight ratio pyrolusite/rutile/flotation cinder is (2-4):1:(1-2). Advantageously, flotation cinder contains, wt %: iron 47-55, copper 1.4-0.6, zinc 0.7-0.8, and, g/t: silver 25-35, cobalt 70-250, selenium 10-20. In a specific case, powder mixture of pyrolusite and rutile and, optionally, flotation cinder fraction 0.1-0.2 cm is moistened to achieve pasty state, dried for 1-2 h at 110-120°C, and molded in the form of pellets or granules. Further merits of invention reside in that above-indicated powder mixture, prior to be moistened, may be mixed with binding substance.

EFFECT: reduced expenses and provision of high efficiency in disinfection and resistance of treated water to repeated bacterial contamination.

6 cl, 5 ex