摘要：The present study investigated the effects of ferrous salt with different concentrations on metabolism transformation of phosphate accumulating organisms. The high-throughput sequencing technology was employed to analyze the changes of microbial community structure. Redundancy analysis was used to analyze the factors leading to changes in microbial community structure. Analysis of alpha diversity shows that low concentration ferrous salt can promote the growth of phosphate accumulating organisms, while high concentration ferrous salt can inhibit the growth of phosphate accumulating organisms. Distribution charts of microbial species show that metabolism of phosphate accumulating organisms will gradually be replaced by the metabolism of glycogen accumulating organisms when ferrous salt is excessive. Redundancy analysis showed that ferrous salt was the most important factor, and that there was a negative correlation between ferrous salt and phosphate accumulating organisms, and a positive correlation between ferrous salt and glycogen accumulating organism. The experiment is significant for further research of ferrous salt cooperative biological phosphorus removal process.
关键词：Ferrous salt;biological phosphorus removal;microbial community structure;metabolism transformation
