好氧颗粒污泥的储存稳定性研究进展

摘要

通过总结有关好氧颗粒污泥(AGS)储存及活性恢复的研究发现,AGS的储存技术包括原位储存和异位储存两类.原位储存过程中,AGS的理化特性明显恶化,活性显著下降.异位储存包括湿式储存和干式储存2种,常温湿式储存效果与原位储存相当;低温湿式储存及干式储存较有利于AGS结构完整性的保持,但也不能避免微生物活性的下降.另外,将储存后的AGS作为接种污泥可在短期内恢复正常.在此基础上,分析了现有研究的不足,并提出了建议.%Through the research regarding the summary of storage and reactivation of aerobic granular sludge(AGS), it is found that the storage technology of AGS includes two categories:in situ storage and ectopic storage.In the pro-cess of in situ storage,the physical and chemical characteristics of AGS get worse obviously,and its activity is decreased evidently. Ectopic storage includes two categories:wet-type storage and dry-type storage. The storage effect of the wet-type storage with normal temperature is quite the same as the effect of situ storage.Although wet-type storage at low temperature and dry-type storage are relatively beneficial to the maintenance of AGS structure integrality,the decrease of microbial activity is inevitable.In addition,the stored AGS as inoculated sludge can be reactivated in a short time.On this basis,the existing shortages of the research have been analyzed,and suggestions offered.