Regulation of aerobic granular sludge reformulation after granular sludge broken: Effect of poly aluminum chloride (PAC)

Release time:2024-08-09  Hits:

• Affiliation of Author(s):环境与市政工程学院
• Journal:Bioresource Technology
• Key Words:中文关键字：好氧颗粒污泥，再形成，调控，聚合氯化铝，物化特性，英文关键字：Aerobic granular sludge；Re-formation；Regulation；Po
• Abstract:The present study focuses on the effect of poly aluminum chloride (PAC) on the re-formation of aerobic granular sludge after its rupture. The morphological changes, physical characteristics such as SVI, mechanical strength and surface properties of aerobic granular sludge during the re-formation process of broken granules were investigated. Moreover, components [protein (PN), polysaccharides (PS)) and distributions (soluble, loosely-bound (LB), tightly-bound (TB)] of extracellular polymeric substances (EPS) in sludge flocs were taken into consideration. It was found that the effect of charge neutralization and bridging induced by PAC treatment improved the surface properties of sludge, the re-formed granules had a larger size, more compact structure and that the removal performance of pollutants after chemical coagulation had improved. The results of correlation analysis demonstrated that PN in EPS correlated well with the surface characteristics and settling ability of sludge flocs, and PAC treatment strengthened the influence, further accelerated the reformation of granular sludge.
• Note:刘永军
• Co-author:王福琨
• First Author:liuzhe,liuyongjun
• Indexed by:Journal paper
• Volume:卷：158
• Issue:期：3
• Page Number:页：201-208
• Translation or Not:no
• Date of Publication:2014-08-01