Influence of sodium chloride on formation of aerobic granules
含盐量对好氧颗粒污泥形成过程的影响

The formation of aerobic granular sludge was studied using different sodium choride concentrations in the substrate. Granules in R1, where the salinity remained at 1% exhibited the inner holes of granules. In R2 and R3, when the salinity increased from 1% to 2.5%, disintegration of granules was observed. However, in R3, when the salinity increased from 2.5% to 5%, the disintegration stopped, the granules became more compact. The disintegration of granules under the salinity of 2.5% may be due to the abominable conditions both for halo tolerant and non halo tolerant bacteria.