Effect of Ozone on Viability of Activated Sludge Detected by Oxygen Uptake Rate (OUR) and Adenosines-triphosphate (ATP) Measurement

摘要

The current study focused on treatment of phenolic wastewater using an integrated process-dosing of ozone directly to activated sludge. The main goal was to analyze the effect of ozonation on viability of activated sludge in different systems-activated sludge in distilled water and activated sludge in wastewater. Two viability detection methods, oxygen uptake (OUR) rate and . adenosine-5'-triphosphate measurement (ATP), were compared. The linear correlation between ATP and OUR measurements in studied range was found to be good (r~2 = 0.90). In case of ozonation of activated sludge in wastewater, ozone doses up to 42 mgO3·gMLVSS~(-1) did not influence the viability of sludge. In addition, contrary to ozonation of sludge in distilled water, soluble COD was reduced by 15.6% (at ozone dose of 42 mgO3·gMLVSS~(-1)).