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Rapid granulation of aerobic granular sludge: A mini review on operation strategies and comparative analysis

Author:
Zhang, Yihao, Dong, Xiaochuan, Nuramkhaan, Marjangul, Lei, Zhongfang, Shimizu, Kazuya, Zhang, Zhenya, Adachi, Yasuhisa, Lee, Duu-Jong, Tay, Joo Hwa
Source:
Bioresource technology reports 2019 v.7 pp. 100206
ISSN:
2589-014X
Subject:
activated sludge, cations, coagulants, granules, selection pressure, wastewater treatment
Abstract:
Due to its overwhelming advantages, aerobic granular sludge (AGS) process is the most promising alternative to the conventional activated sludge (CAS) which is currently and mainly applied in wastewater treatment plants (WWTPs). Long start-up period is still one of the major challenges limiting the wide application of AGS in WWTPs worldwide. This mini review summarized the main strategies adopted in the previous works for the rapid formation of AGS, including short settling time or high selection pressure, addition of cation ions and/or coagulant or inert carrier, seeding pellets/crushed or intact granules, and inoculation of self-aggregation strain(s), etc. Comparison analysis was also performed among these strategies, with future research perspectives being prospected.
Agid:
6381266