Research progress of alginate-like exopolysaccharides in aerobic granular sludge reclamation
2024
LI Pei | WAN Junfeng | MA Yifei | HUANG Chenminghui | WU Bo
The research on recycling has become the focus of the research direction of aerobic granular sludge（AGS） technology，and alginate-like exopolysaccharides（ALE） extracted from AGS is considered to be one of the most valuable recyclable resources in AGS. At present，the technological revolution of sewage treatment plant focuses on the recovery of high value-added products，the recovery and application of ALE has formed a clear path. Based on the formation mechanism and components of aerobic granular sludge，this paper analyzed the unique structure and properties of ALE，summarized the recovery and evaluation methods of ALE at home and abroad，and discussed the effects of factors such as organic load rate，carbon to nitrogen ratio，salinity，particle size and sludge residence time on ALE production. Synchronous recovery of ALE and other value-added products was described. Finally，by discussing the wide application range and actual economic value of ALE，the potential research direction of ALE in the reclamation of AGS was put forward.
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