中文摘要：

氧气的小粒在常规、连续流动被形成，完全混合的激活的污泥系统(CMAS ) 。反应堆与包含很少细丝的种子污泥被接种并且用合成市政的废水喂了。污泥和一般水准的安定时间溶解了氧() 反应堆， 2 是 h 和 4.2 mg 散瑮慲楴湯 ? 敷敲甠敳 ? 湩琠敨搠獥污湩瑡潩 ? 档浡敢 ? 潴猠畴祤琠敨攠晦 ' ?景椠湯挠湯散瑮慲楴湯吗？

英文摘要：

Aerobic granules were formed in a conven- tional, continuous flow, completely mixed activated sludge system （CMAS）. The reactor was inoculated with seed sludge containing few filaments and fed with synthetic municipal wastewater. The settling time of the sludge and the average dissolved oxygen （DO） of the reactor were 2 h and 4.2 mg. L 1, respectively. The reactor was agitated by a stirrer, with a speed of 250r·min^-1, to ensure good mixing . The granular sludge had good settleability, and the sludge volume index （SVI） was between 50 and 90 mL ·g ^-1. The laser particle analyzer showed the diameter of the granules to be between 0.18 and 1.25 mm. A scanning electron microscope （SEM） investigation revealed the predominance of sphere-like and rod-like bacteria, and only few filaments grew in the granules. The microbial community structure of the granules was also analyzed by polymerase chain reaction-denaturing gradient gel electro- phoresis （PCR-DGGE）. Sequencing analysis indicated the dominant species were α, β, and γ-Proteobacteria, Bacteroidetes, and Firmicutes. The data from the study suggested that aerobic granules could form, if provided with sufficient number of filaments and high shear force. It was also observed that a high height-to-diameter ratio of the reactor and short settling time were not essential for the formation of aerobic granular sludge.