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Bacterial Community Structure and Dynamic Changes in Different Functional Areas of a Piggery Wastewater Treatment System
Chemicals of emerging concern (CEC) in pig farm breeding wastewater, such as antibiotics, will soon pose a serious threat to public health. It is therefore essential to consider improving the treatment efficiency of piggery wastewater in terms of microorganisms. In order to optimize the overall pigg...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8540373/ https://www.ncbi.nlm.nih.gov/pubmed/34683455 http://dx.doi.org/10.3390/microorganisms9102134 |
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author | Shi, Lin Liu, Naiyuan Liu, Gang Fang, Jun |
author_facet | Shi, Lin Liu, Naiyuan Liu, Gang Fang, Jun |
author_sort | Shi, Lin |
collection | PubMed |
description | Chemicals of emerging concern (CEC) in pig farm breeding wastewater, such as antibiotics, will soon pose a serious threat to public health. It is therefore essential to consider improving the treatment efficiency of piggery wastewater in terms of microorganisms. In order to optimize the overall piggery wastewater treatment system from the perspective of the bacterial community structure and its response to environmental factors, five samples were randomly taken from each area of a piggery’s wastewater treatment system using a random sampling method. The bacterial communities’ composition and their correlation with wastewater quality were then analyzed using Illumina MiSeq high-throughput sequencing. The results showed that the bacterial community composition of each treatment unit was similar. However, differences in abundance were significant, and the bacterial community structure gradually changed with the process. Proteobacteria showed more adaptability to an anaerobic environment than Firmicutes, and the abundance of Tissierella in anaerobic zones was low. The abundance of Clostridial (39.02%) and Bacteroides (20.6%) in the inlet was significantly higher than it was in the aerobic zone and the anoxic zone (p < 0.05). Rhodocyclaceae is a key functional microbial group in a wastewater treatment system, and it is a dominant microbial group in activated sludge. Redundancy analysis (RDA) showed that chemical oxygen demand (COD) had the greatest impact on bacterial community structure. Total phosphorus (TP), total nitrogen (TN), PH and COD contents were significantly negatively correlated with Sphingobacteriia, Betaproteobacteria and Gammaproteobacteria, and significantly positively correlated with Bacteroidia and Clostridia. These results offer basic data and theoretical support for optimizing livestock wastewater treatment systems using bacterial community structures. |
format | Online Article Text |
id | pubmed-8540373 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-85403732021-10-24 Bacterial Community Structure and Dynamic Changes in Different Functional Areas of a Piggery Wastewater Treatment System Shi, Lin Liu, Naiyuan Liu, Gang Fang, Jun Microorganisms Article Chemicals of emerging concern (CEC) in pig farm breeding wastewater, such as antibiotics, will soon pose a serious threat to public health. It is therefore essential to consider improving the treatment efficiency of piggery wastewater in terms of microorganisms. In order to optimize the overall piggery wastewater treatment system from the perspective of the bacterial community structure and its response to environmental factors, five samples were randomly taken from each area of a piggery’s wastewater treatment system using a random sampling method. The bacterial communities’ composition and their correlation with wastewater quality were then analyzed using Illumina MiSeq high-throughput sequencing. The results showed that the bacterial community composition of each treatment unit was similar. However, differences in abundance were significant, and the bacterial community structure gradually changed with the process. Proteobacteria showed more adaptability to an anaerobic environment than Firmicutes, and the abundance of Tissierella in anaerobic zones was low. The abundance of Clostridial (39.02%) and Bacteroides (20.6%) in the inlet was significantly higher than it was in the aerobic zone and the anoxic zone (p < 0.05). Rhodocyclaceae is a key functional microbial group in a wastewater treatment system, and it is a dominant microbial group in activated sludge. Redundancy analysis (RDA) showed that chemical oxygen demand (COD) had the greatest impact on bacterial community structure. Total phosphorus (TP), total nitrogen (TN), PH and COD contents were significantly negatively correlated with Sphingobacteriia, Betaproteobacteria and Gammaproteobacteria, and significantly positively correlated with Bacteroidia and Clostridia. These results offer basic data and theoretical support for optimizing livestock wastewater treatment systems using bacterial community structures. MDPI 2021-10-11 /pmc/articles/PMC8540373/ /pubmed/34683455 http://dx.doi.org/10.3390/microorganisms9102134 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Shi, Lin Liu, Naiyuan Liu, Gang Fang, Jun Bacterial Community Structure and Dynamic Changes in Different Functional Areas of a Piggery Wastewater Treatment System |
title | Bacterial Community Structure and Dynamic Changes in Different Functional Areas of a Piggery Wastewater Treatment System |
title_full | Bacterial Community Structure and Dynamic Changes in Different Functional Areas of a Piggery Wastewater Treatment System |
title_fullStr | Bacterial Community Structure and Dynamic Changes in Different Functional Areas of a Piggery Wastewater Treatment System |
title_full_unstemmed | Bacterial Community Structure and Dynamic Changes in Different Functional Areas of a Piggery Wastewater Treatment System |
title_short | Bacterial Community Structure and Dynamic Changes in Different Functional Areas of a Piggery Wastewater Treatment System |
title_sort | bacterial community structure and dynamic changes in different functional areas of a piggery wastewater treatment system |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8540373/ https://www.ncbi.nlm.nih.gov/pubmed/34683455 http://dx.doi.org/10.3390/microorganisms9102134 |
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