中文摘要：

研究了不同含盐梯度废水下好氧颗粒污泥的形成过程。在反应器R1中，其含盐量一直维持1％，其颗粒成中空结构；在R2、R3中，其含盐量由1％提高到2．5％时，其颗粒发生膨胀破碎；在R3中，其含盐量由2．5％提高到5％时，其颗粒由疏松变为密实。另外，溶解氧消耗速率（SOUR）随着含盐量的增加而降低。在含盐量为2．5％时，好氧颗粒污泥的耐盐菌与非耐盐菌均处于不利的生长环境，此时好氧颗粒污泥处于最不稳定的状态，容易发生解体。

英文摘要：

The formation of aerobic granular sludge was studied using different sodium choride concentra- tions 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. Howev- er, 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.