This study focused on two typical contact oxidation iron and manganese removal water treatment plants in rural areas of Liaoning province.The microbial community structure during the process was analyzed using 16S rRNA high-throughput sequencing technology.The results indicated that the contact oxidation iron and manganese removal process could significantly alter the microbial community structure in the source water.Proteobacteria(43.86％)was the dominant phylum in the process.Gallionella and Flavobacterium were identified as the major iron and manganese functional genera.Correlation analysis revealed that even at relatively low abundance,genera like Rhodoferax(0.71％)and Sulfurospirillum(0.75％)showed significant positive correlations with colony counts,iron and manganese concentrations,indicating their important roles in this system.In-depth analysis using molecular ecological networks and topological properties,along with COGs functional predictions,revealed synergistic metabolic relationships among genera like Gallionella,Flavobacterium,Pseudomonas and Rhodoferax.Despite the influence of different treatment stages on microbial community structure,their metabolic effects remained relatively small,indicating the formation of a relatively stable coexistence system that plays an important role in the efficient and stable removal of iron and manganese ions in water.
关键词
接触氧化除铁除锰工艺/微生物群落/动态变化/协同作用
Key words
contact oxidation process for iron and manganese removal/microbial community/dynamic changes/synergistic interaction
维普
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