Characteristics of aerobic granules grown onglucose and acetate in sequential aerobicsludge blanket reactors

摘要

Aerobic granules were cultivated in two column-type sequential aerobic sludge blanket reactors red with glucose and acetate, respectively. The characteristis of aerobic granules were investigated. Results indicated that the glucose- and acetate-fed granules have comparable characteristics in terms of settling velocity, size, shape, biomass density, hydrophobicity, physical strength, microbial activity and storage stability. Substrate component does not seem to be a key factor on the formation of aerobic granules. However, microbial diversity of the granules is closely associated with the carbon sources supplied to the reactors.