Effects of Sewage Treatment on Microbial Community Structure of Surface Water in Xiantao Wetland

Abstract

Abstract[Objective] The aim of study is to research the treatment of urban sewage by the semi natural wetland method in the high connectivity water system of the surface water and surface water in the inland waterway.[Methods] Microbial diversity and community structure in the surface water of eight samples on the Xiantao artificial wetland were investigated by using the Illumina Miseq sequencing technique and the resulting microbial data were statistically analyzed in combination with environmental variabl.[Results] The results showed that COD concentration had a very significant positive correlation with total microbial communities (r = 0.700, P < 0.01), and TP,NH -N and TN were significantly positively correlated (r = 0.509, 0.517 and 0.508, P < 0.05). In addition, COD concentration was positively correlated with abundant groups (r = 0.488, P < 0.05), and TP, + 4 NH -N and TN were significantly positively correlated (r = 0.537, 0.356 and 0.360, P < 0.05). For rare groups, they may be more sensitive to the environment than their abundant groups.[Conclusion] For rare taxa, it is likely to be more sensitive to the environment than their rich taxa. The relative abundance of rare taxa of samples collected when buried deep 5 m is greater than that of surface water. Therefore, the environmental conditions of microbial responses (rare taxa) should be carefully evaluated in the future.

A Preliminary Study of Bacterioplankton Community Structure in the Taiyangshan Wetland in Ningxia and Its Driving Factors

“…Chemical oxygen demand is a comprehensive index used to characterize water pollution caused by organic matter [63]. The bacterioplankton community structure varies in waters depending on chemical oxygen demand levels [64]. The results of this study show that organic pollution is relatively common in the Taiyangshan Wetland, and there was a significant correlation between the bacterioplankton community and COD Cr , particularly in April and Lake Region IV.…”

Seasonal Freezing Drives Spatiotemporal Dynamics of Dissolved Organic Matter (DOM) and Microbial Communities in Reclaimed Water-Recharged River

“…Flavobacterium predominantly accumulates during winter, when river flow is reduced, potentially leading to the retention of pollutants. Flavobacterium belongs to the class of typical denitrifying bacteria, with the increase in winter TN leading to an augmentation in the relative abundance of Flavobacterium [63]. The possible contribution of WWTP effluent to the BCs of the receiving river was identified using source tracker analysis (Figure 6b).…”