好氧颗粒污泥形成的微生物学机理分析

从微生物的角度出发,阐述好氧污泥颗粒化过程中的微生物自固定现象。分析表明,颗粒微生物胞外多聚物可以促进细胞间的聚合和粘连,是形成颗粒污泥并维持其稳定性的重要因素。微生物细胞的表面疏水性增加是微生物自聚集的重要的推动力,污泥表面电荷的下降有利于污泥粒子间相互接近聚集形成稳定的颗粒结构。认为好氧颗粒污泥的培养过程是一个包含物理、化学和生物作用的复杂的微生物生态系统形成的过程。

Analysis of microbiology mechanism of aerobic granular sludge form

The phenomenon of microbe self-immobilization in the granulation process of aerobic sludge was elaborated.The analysis showed that,extracellular polymers of microorganism granule could promote intercellular polymerization which played a significant role on formation of granular sludge and maintenance of its stability.The increase of the cell surface hydrophobicity was an important drive-force of microbe self-immobilization,the falling of the sludge surface charges benefited the access and accumulation of sludge granules,and formed a stable granular structure.It was considered that,the cultivation process of aerobic granular sludge was a complete process which form the microecological system with the action of physical,chemical and biological.