METHOD OF SEA BALLAST WATER DEACTIVATION Russian patent published in 2013 - IPC C02F1/32 C02F1/78 C02F103/08 

FIELD: chemistry.

SUBSTANCE: invention can be applied in field of deactivation of sea ballast water of ships. Method includes supply of ozone in quantity, ensuring concentration not more than 2 mg of ozone per 1 litre of processed sea water from ozone-containing gas mixture or from mixture of ozone with fresh water into deactivated sea ballast water. Ozone is introduced directly before supply of sea ballast water which is to be deactivated into block of UV-C (3) irradiation and time from introducing ozone into it to output of sea ballast water from block UV-C irradiation (3) does not exceed 10 seconds. Dose of UV-C irradiation is in the range 100-200 mJ/cm². Ozone-containing gas mixture is supplied through bubbler plate, placed perpendicularly to direction of movement of flow of sea ballast water to be deactivated.

EFFECT: invention makes it possible to effectively deactivate sea ballast water due to synergism of biocidal processing by complex impact of ozone and bactericidal ultraviolet (UV-C) irradiation, as well as to ensure protection of coastal waters of the world ocean from invasive organisms, namely, from bacteria, spores, viruses, unicellular phyto- and zooplankton.

3 cl, 2 dwg, 1 tbl