Study on two-step ozone treatment of liquid effluents from livestock farms

Abstract

Wastewater ozonation, for epidemic animal diseases, is an effective method. The disadvantage of this method is relatively high percentage of unreacted ozone (10-40%). This paper proposes a combined method of mixing ozone with liquid effluents: first - barbotage, and at the second stage - injection or mechanical emulsification. It was found that the two-stage treatment increases the mixing efficiency (respectively disinfection) to 88 - 90 %.