Electro-ozonization technology of manure effluent treatment: mathematical model implementation

The disposal of animal waste products is especially urgent at large livestock facilities. In order to develop an effective technology of processing animal manure effluents, the authors have developed an effective method of their treatment and designed an experimental installation – a manure effluent treatment station including an electro-ozonizer. Cleaning is carried out in two stages: at the first stage, manure effluent is subjected to separation and flotation to remove large dispersed impurities, at the second stage, liquid fraction is treated with ozone. The technical result is achieved by fine atomization of manure effluents with a droplet diameter from 1.0 to 10.0 microns in the ozone-air mixture at an ozone concentration of 450 to 500 mg/m³. Calculations based on the developed mathematical model have shown that fine atomization of manure effluents in a chamber with the ozone-air mixture increases the ozone concentration gradient and ozone mass transfer through the interface in 360 times as compared with barbotization of ozone into liquid. This makes it possible to increase significantly the rate of ozone consumption in chemical reactions, increase the efficiency factor, and reduce energy consumption for manure effluent treatment. The experiment was conducted at the pig-breeding farm of LLC “Novye Agrarnye Tekhnologii”, Beysuzhek Vtoroy, the Vyselki district, the Krasnodar region. The results of chemical, organoleptic and microbiological analyses confirm the high efficiency of the developed method and equipment for wastewater treatment of pig farms. The developed electro-ozonization technology and equipment improve the ecological situation on livestock farms by preventing the discharge of harmful emissions of ecologically toxic volatile compounds into the atmosphere.

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