Yeom, IT Lee, KR Lee, YH Ahn, KH Lee, SH 2024-01-21T10:08:16Z 2024-01-21T10:08:16Z 2021-09-05 2002-09 0273-1223 https://pubs.kist.re.kr/handle/201004/139258 The effects of ozone pretreatment on the biodegradability of municipal wastewater sludge were determined. Three types of experiments were conducted: anaerobic digestion, aerobic biodegradation, and denitrification using ozone-treated sludge as a carbon source. For 5 days, ozonated sludge at 0.1 gO(3)/g-SS showed about 2-3 times greater biodegradation compared to the raw sludge in both aerobic and anaerobic conditions. In anaerobic experiments, biodegradation increased with ozone dosage up to 0.2 gO(3)/g-SS. Further increase of ozone dosage did not improve the biodegradation. In aerobic condition, about 77% of the ozonated sludge at 0.1 gO(3)/g-SS could be biodegraded after 15 days and is compared with 36% degradation of the untreated sludge. Most of the biodegradation of the ozonated sludge occurred within 5 days while the raw sludge was biodegraded steadily throughout the experimental period. The biodegradation enhancement of ozonated sludge was confirmed in batch denitrification experiments. English IWA PUBLISHING Effects of ozone treatment on the biodegradability of sludge from municipal wastewater treatment plants Article 10.2166/wst.2002.0641 1 WATER SCIENCE AND TECHNOLOGY, v.46, no.4-5, pp.421 - 425 WATER SCIENCE AND TECHNOLOGY 46 4-5 421 425 scie scopus 000178434900056 Engineering, Environmental Environmental Sciences Water Resources Engineering Environmental Sciences & Ecology Water Resources Article; Proceedings Paper anaerobic digestion biodegradability ozone treatment sludge sludge pretreatment