Research advances on the disintegration mechanisms and remediation strategies of aerobic granular sludge
GUO Yuan1, FENG Si-qi1, QUAN Chen-yan1, LI Jia-ke1, WANG Xin-hua2, SHI Wen-xin3
1. Department of Municipal and Environmental Engineering, State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, China; 2. School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China; 3. College of Environmental and Ecology, Chongqing University, Chongqing 400044, China
Abstract：Aerobic granular sludge (AGS) technology, which is expected to replace conventional activated sludge process, has been promised as the next generation technology of biological wastewater treatment. However, it has a key bottleneck problem that aerobic granules are easy to disintegrate, and then cause system instability under the long-term operation, so it is difficult to be applied in large-scale engineering. Through literature analysis and organization, a variety of adverse factors causing granules disintegration, their hazard threshold and reaction mechanisms were systematically summarized. Moreover, current recovery strategies for disintegrated granules, their effectiveness and re-granulation mechanisms were reviewed. Based on limitations of current research, this work proposed the future research directions, aim at realizing the dynamically stable operation of the AGS systems through the circle of disintegration to re-granulation. Finally, it is expected to promote the low-carbon transformation of the wastewater treatment plants by practically adopting AGS technology.
郭媛, 冯思琪, 权晨妍, 李家科, 王新华, 时文歆. 好氧颗粒污泥的解体机制及修复策略研究进展[J]. 中国环境科学, 2024, 44(2): 708-720.
GUO Yuan, FENG Si-qi, QUAN Chen-yan, LI Jia-ke, WANG Xin-hua, SHI Wen-xin. Research advances on the disintegration mechanisms and remediation strategies of aerobic granular sludge. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(2): 708-720.
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