How does shear affect aggregation in granular sludge sequencing batch reactors? Relations between shear, hydrophobicity, and extracellular polymeric substances

• Published in: Water science and technology Vol. 58; no. 2; pp. 267 - 276
• Main Authors: Dulekgurgen, E, Artan, N, Orhon, D, Wilderer, P.A
• Format: Journal Article
• Language: English
• Published: England IWA Publishing 01.01.2008
• Subjects: activated sludge; Aeration; aerobic conditions; Aggregation; anaerobic conditions; Bacteria - growth & development; Bacteria - metabolism; Batch reactors; Biomass; Bioreactors; Cell surface; Composition; equipment performance; Extracellular; extracellular space; Extreme values; Granulation; granules; Hydrodynamics; Hydrophobic and Hydrophilic Interactions; Hydrophobicity; Mechanics; Physical stress; Physiology; polymers; Polymers - chemistry; Polymers - metabolism; Properties; Reactors; Sequencing; Sequencing batch reactor; Settling; Sewage - chemistry; Shear stress; Shearing; Sludge; Time Factors; wastewater treatment; Water - chemistry

The objective was to provide an answer to "how to grow/survive in aggregative physiology" through evaluating the relation between physical stress and observed biomass characteristics. For that, a lab-scale sequencing batch reactor was operated at an anaerobic-aerobic mode and under altered...