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Effect of UV irradiation on microbial structure, metabolic pathways and functional genes of nitrogen metabolism in highland wastewater

Paper Topic: 
Water and Wastewater Treatment
 

Pages :
-

Corresponing Author: 
Zong Yong Chen
 
Authors: 
You Jun Hao Guo Ming zhe Zong Yong Chen Wang Jun Fu Chun Hui Tang Shi Long
Paper ID: 
gnest_04314
Paper Status: 
In press
Date Paper Accepted: 
19-06-2022
Paper online: 
12/07/2022
Visual abstract: 
Abstract: 

In this experiment, in the background of the plateau environment, the effects of ultraviolet irradiation on the microbial community structure, metabolic pathways and nitrogen metabolism function genes of sewage were studied at 0 (control group), 5, 10, 30, and 180 min. The results showed that the increase of UV irradiation time promoted the microbial richness of sewage, but decreased the microbial diversity. In terms of community structure, the increase of ultraviolet irradiation time will inhibit or promote some bacterial genera, for example, it has a promoting effect on Bacteroidota, norank_f_ Saprospiraceae, etc., and an inhibitory effect on Phreatobacter. The relative abundance of metabolic pathways changed significantly with the increase of UV irradiation time, and the change trends at different metabolic levels were the same. In nitrogen metabolism pathways, the relative abundance of genes involved in nitrification and denitrification functions was inhibited by the duration of UV irradiation.

Keywords: 
ultraviolet irradiation; highland sewage; microbial communities; metabolic pathways; functional genes