YUANYi-ming,ZHANGGuang-yi,FANGHong-yuan,et al.Influence of Microbial Community in Drainage Pipeline on Corrosion[J].China Water & Wastewater,2022,38(8):46-51.
Influence of Microbial Community in Drainage Pipeline on Corrosion
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第8期
Page:
46-51
Column:
Date of publication:
2022-04-17
- Keywords:
- sewer pipes; microbial community; corrosion; environmental factors; weight
- Abstract:
- Three typical sewer pipes were selected to study the influence of microbial community on the corrosion drainage pipeline. The distribution characteristics of microbial community and the impact of environmental factors on biological diversity were studied by sampling the biofilm and sewage in pipes. The structure of microbial community in spatial distribution was analyzed by 16S rRNA gene amplicon sequencing (Illumina). The distribution of microbial communities in different pipes had a certain similarity. In the phylum level, Proteobacteria (38.2%) and Actinobacteria (37.2%) dominated at the upper part of the pipes as well as Chloroflexi (31.6%) and Euryarchaeota (19.5%) dominated at the bottom part of the pipes. In the genus level, Mycobacterium (33.1%) at the upper part and Methanothrix (18.1%) at the bottom part had the highest abundance. Canonical correspondence analysis found that pH was the important factor affecting the microbial community. Different functional bacteria have different effects on pipeline corrosion. In the calculation of the weight of functional bacteria, sulfur?oxidizing bacteria at the upper part and nitrate-reducing bacteria at the bottom part had higher weights, which were 0.30 and 0.22, respectively. It was found by the microbial corrosion assessment that the risk of microbial concrete corrosion of pipe beginning part was higher.
Last Update:
2022-04-17