OZONATION OF SYNTHETIC WASTEWATER CONTAINING 2-MERCAPTOBENZOTHIAZOLE
Ján Derco, L. Mitaľová
Abstract
Ján Derco, L. Mitaľová
Abstract
The possibilities of utilisation of ozone for removal of 2-mercaptobenzothiazole (MBT) from wastewater were studied in lab-scale. COD removal efficiency about 85 % was achieved after 6 hours of ozonation of the synthetic wastewater. The best fit of experimental COD data during ozonation was achieved with the zero order reaction kinetic model. Ozonation of MBT had positive influence on increase of biodegradability and respiration activity of activated sludge in the presence of wastewater after ozonation. The increase of BOD values and specific exogenous respiration rate with time of ozonation was observed within the performed measurements.
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The possibilities of utilisation of ozone for removal of 2-mercaptobenzothiazole (MBT) from wastewater were studied in lab-scale. COD removal efficiency about 85 % was achieved after 6 hours of ozonation of the synthetic wastewater. The best fit of experimental COD data during ozonation was achieved with the zero order reaction kinetic model. Ozonation of MBT had positive influence on increase of biodegradability and respiration activity of activated sludge in the presence of wastewater after ozonation. The increase of BOD values and specific exogenous respiration rate with time of ozonation was observed within the performed measurements.
Key concepts: Wastewater, Chemistry, Activated sludge, Biodegradation, Ozone, Pulp and paper industry, Industrial wastewater treatment, Environmental chemistry