DEEP PURIFICATION AND DECONTAMINATION OF NATURAL WATERS AND WATERS CONTAINING ANTHROPOGENIC AND MAN-CAUSED POLLUTANTS Russian patent published in 2015 - IPC C02F3/02 C02F9/08 C02F9/14 

FIELD: process engineering.

SUBSTANCE: invention relates to treatment of natural waters containing pollutants for drinking and processing purposes. This process comprises degassing-aeration processes, chemical and biological oxidation of organic and inorganic matters in aerobiofilter and contact filtration through floating bed in separate filter combined with aerobiofilter by hydro automatic flushing system. Aeration and degassing are performed by low-pressure vacuum-jet ejection or injection and jet spraying in water-air medium. Chemical-biological oxidation of organic matters is carried out in combined floating granular-fibrous bed in partially unsubmerged state and partially submerged state at initial stage of operation. Additionally, water is coagulated and flocculated by feed of reagents to different points of flushing water bellow, over its height. Clarification-sorption process of deep afterpurification is conducted as well as decontamination by filtration in upflow through granular bed and coal-silvered cartridges. These are fitted at floating bed top ply to double as purified water collection and discharge system to force water to clean water tank for uniform distribution of the filter area at bed flushing conditions.

EFFECT: deeper treatment of natural waters.

6 cl, 1 dwg, 5 ex