Anaerobic sludge granulation（7）
Source： | Date:
2011-07-10
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2.2.3. Ecological approach
Bridging of microflocs by Methanothrix filaments(1987): From microscopic examination and activity measurements, Dubourgier et al. suggests that the
granulation mechanism starts by the covering of filamentous Methanothrix by colonies of cocci or rods(acidogenic bacteria), forming microflocs of 10–50 mm.
Next, Methanothrix filaments, due to its particular morphology and surface properties, might establish bridges between several microflocs forming larger
granules (>200 mm).Further development of acidogenic and syntrophic bacteria favors the growth of the granules.Therefore, these authors support the idea that
Methanothrix plays an important role in granule strength by forming a network that stabilises the overall structure but also emphasise the role of extracellular polymers and cell walls.
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