The influence of operation mode,operation time, nitrate concentration,aeration rate,sludge load and aeration time on sludge settleability was investigated in sequencing batch reactor(SBR).

• 分别研究了运行方式、运行时间、硝酸盐浓度、曝气量、污泥负荷及曝气时间对SBR工艺中污泥沉降性能的影响。