Anaerobic sludge granulation（10）
Source： | Date:
2011-07-10
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The development of each type of granular sludge was explained on the basis of
seed sludge selection and sludge bed erosion and expansion, and the consequent
differences in selection pressure and mean sludge residence time. Methanosarcina granules develop due to the capacity of this genus to produce clumps of bacteria, independently of the selection pressure. The clumps can reach macroscopic dimensions and show cavities, which can be inhabited by other species.
However, this kind of granules were just found in experiments where the concentration of acetate as a sole substrate was maintained above 1 kg COD/m3, which means that Methanosarcina was able to outcompete Methanothrix.
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