State Key Laboratory of Pollution Control and Resource Reuse, Key Laboratory of Yangtze River Water Environment, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
J Environ Sci (China). 2011;23(4):537-44. doi: 10.1016/s1001-0742(10)60445-7.
Aerobic granules seeded with activated sludge flocs and pellets (obtained from activated sludge flocs) were cultivated in two sequencing batch reactors and their characteristics were compared. Compared with granules seeded with activated sludge flocs, those seeded with pellets had shorter start-up time, larger diameter, better chemical oxygen demand removal efficiency, and higher hydrophobicity, suspended solid concentration, and Mg2+ content. The different inocula led the granule surface with different microbial morphologies, but did not result in different distribution patterns of extracellular polymeric substances and cells. The anaerobic bacterium Anoxybacillus sp. was detected in the granules seeded with pellets. These results highlighted the advantage of pellet over activated sludge floc as the seed for aerobic granulation and wastewater treatment.
采用接种活性污泥絮体和颗粒（分别取自活性污泥絮体和颗粒）的方法培养好氧颗粒污泥，在两个序批式反应器中进行了对比试验。与接种活性污泥絮体的颗粒相比，接种颗粒的颗粒具有较短的启动时间、更大的粒径、更高的化学需氧量去除效率和更好的疏水性，同时其悬浮固体浓度和 Mg2+含量也更高。不同的接种物导致颗粒表面具有不同的微生物形态，但对外界多聚物和细胞的分布模式没有影响。在接种颗粒的颗粒中检测到了厌氧细菌 Anoxybacillus sp.。这些结果突出了颗粒相对于活性污泥絮体作为好氧颗粒化和废水处理的接种物的优势。
