BR处理生活污水的污泥颗粒化研究

wo anaerobic baffled reactors (ABR) which have different start-up methods of treating municipal wastewater were used to study the granulation of sludge.The anaerobic sludge in the ABRs was taken from a wastewater treatment plant.By comparing the diameter and the feature of granular sludge forming,the effects of two methods which include changing feed CODcr and HRT were analyzed.As a result, both the patterns of start-up were capable of enhancing granule formation,but there are differences in diameter and level of sludge granulation.The shape of granular sludge is globular or spheroidicity,and particle diameter is 1-2mm.The granule sludge in the compartments of ABRs was compact and smooth on its surface with the Methanosaeta sp. as its priority microbes.