GROWTH CHARACTERISTICS AND COMMUNITY FUNCTION OF PIPE WALL BIOFILMS UNDER CHLORINATION/CHLORAMINATION

ZHANG Xinyue; KONG Yun; SHI Weihong; HUANG Yongzhou

doi:10.13205/j.hjgc.202401007

Volume 42 Issue 1

Jan. 2024

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ZHANG Xinyue, KONG Yun, SHI Weihong, HUANG Yongzhou. GROWTH CHARACTERISTICS AND COMMUNITY FUNCTION OF PIPE WALL BIOFILMS UNDER CHLORINATION/CHLORAMINATION[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(1): 47-54. doi: 10.13205/j.hjgc.202401007

Citation:

ZHANG Xinyue, KONG Yun, SHI Weihong, HUANG Yongzhou. GROWTH CHARACTERISTICS AND COMMUNITY FUNCTION OF PIPE WALL BIOFILMS UNDER CHLORINATION/CHLORAMINATION[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(1): 47-54. doi: 10.13205/j.hjgc.202401007

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GROWTH CHARACTERISTICS AND COMMUNITY FUNCTION OF PIPE WALL BIOFILMS UNDER CHLORINATION/CHLORAMINATION

doi: 10.13205/j.hjgc.202401007

Municipal Planning and Engineering Design Institute, Jiangsu Provincial Planning and Design Group, Nanjing 210019, China

Received Date: 2022-10-16
Available Online: 2024-04-29

Abstract

Abstract

Based on the biofilm annular reactor, this study simulated pipe wall biofilm in the chlorine disinfection and chloramine disinfection system. The impact of disinfection(chlorination/chloramination) on the growth characteristics, community composition, and functional abundance of the microbial was explored. The results showed that in comparison with chlorine, the biofilm biomass in the chloramine disinfection system was higher, and the proportion of live bacteria was larger. The community richness and diversity of biofilm under chloramination were higher than that under chlorination. There were significant differences in the community structure of biofilm under the two disinfection methods. Under chlorination, Gammaproteobacteria(63.8%) were predominant, and Nevskia(32.9%) and Methylophilus(20.4%) were the dominant genera; under chloramination, Alphaproteobacteria(53.8%) was the most dominant class, and Bradyrhizobium(10.4%) was the dominant genus. Compared with chloramination, the metabolism functional abundance of the biofilms in the chlorine disinfection system was more advantageous, especially in amino acid metabolism, carbohydrate metabolism, and xenobiotics metabolism. In terms of amino acid metabolism functional pathway, there were significant differences in the functional abundance of tryptophan metabolism, β-alanine metabolism, lysine degradation, and degradation of valine, leucine, and isoleucine for the biofilms under the two disinfection methods.
- pipe wall biofilm,
- chlorination,
- chloramination,
- community structure,
- functional abundance

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References(26)

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