Biodegradability and COD Fraction for Anaerobic Excess Sludge Digestion by Ozone Pretreatment
Keywords:
Biodegradability, COD fraction, Ozone pretreatmentAbstract
The purpose of this study was to investigate the effect of ozone pretreatment on waste activated sludge (WAS) considering the degradability and COD fraction at 0.1-0.5 g O3 /g TS. The SCOD/COD ratios were indicating parameter for capable of solubility that to reflect the extent of hydrolysis. As well as BOD/COD ratios and Biochemical Methane Potential, BMP were used to evaluated the WAS biodegradability. The results showed ozone concentration 0.5 g O3/g TS higher SCOD/COD ratio and biodegradability. And the result of BMP at 0.4 g O3/g TS ozone concentration showed highest biogas rate which is 0.33 L/g CODremove.
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