STUDIES ON THE MICROBIOLOGICAL CHARACTERS AND THE MECHANISM OF FORMATION OF GRANULAR SLUDGES WITH HIGH ACTIVITY
高活性厌氧颗粒污泥微生物特性和形成机理的研究

Anaerobic granular sludges formed in several kinds of industrial or synthetic wastewater were selected for microbial studies on morphology, characteristics and microbial composition. By scanning the surfaces of matured sludge granules with electronic microscope, it showed that the dominant bacterium in granules was Methanothrix sp. which twined about each other to form granule-like pellets during the later period of the growth. And Methanosarcina sp. played a certain role during the initial period of granule formation as well. In this study, the microbial composition and operation features in all formation stages of sludge granules in synthetic wastewater and adhesion of the "241" Net Polymer to bacteria were observed preliminarily. The necessary conditions for anaerobic granular sludge formation were discussed.