Low-concentration methanol effect on the microorganisms, nitrogen removal, and recovery of the completely autotrophic nitrogen removal over nitrite
Methanol has a significant effect on the performance of the completely autotrophic nitrogen removal over the nitrite (CANON) process. In this research, the effect of low-concentration methanol on the functional microorganisms and nitrogen removal and recovery in the CANON system is investigated. The...
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| Format: | Article |
| Language: | English |
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IWA Publishing
2023-01-01
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| Series: | Water Science and Technology |
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| Online Access: | http://wst.iwaponline.com/content/87/1/130 |
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| author | Xiu Yue Ao You Yang Liu Mincheng Lai Kun Zhang |
| author_facet | Xiu Yue Ao You Yang Liu Mincheng Lai Kun Zhang |
| author_sort | Xiu Yue |
| collection | DOAJ |
| description | Methanol has a significant effect on the performance of the completely autotrophic nitrogen removal over the nitrite (CANON) process. In this research, the effect of low-concentration methanol on the functional microorganisms and nitrogen removal and recovery in the CANON system is investigated. The result shows that the anaerobic ammonium-oxidizing bacteria (AnAOB) was suppressed with low-concentration methanol addition, and the phylum Planctomycetes was hidden. The genus Candidatus Brocadia was restrained, and the relative abundances reduced from 25.5 to 15.0% in the upper biofilm and from 20.3 to 14.3% in the bottom biofilm, respectively. However, low-concentration methanol promoted the nitrifying oxidizing bacteria (NOB) activity. This phenomenon reduced the average ammonium nitrogen removal rate from 95.0 to 70.7%, and the average total nitrogen removal rate decreased from 81.3 to 43.6%, respectively. The results demonstrated that the low-concentration methanol as an organic carbon matter harmed the CANON process. Fortunately, the CANON system had an excellent self-healing ability when the methanol was stopped, with the average ammonium nitrogen removal rate and total nitrogen removal rate returning to 95.5 and 80.9%, respectively. This research supplies a reference for practical engineering design and application by improving the understanding of the effects of low-concentration methanol on CANON process performance.
HIGHLIGHTS
Low-concentration methanol harmed the CANON process in a SABF system.;
The relative abundance of anammox bacteria reduced because of a low-concentration methanol.;
The genus Candidatus Brocadia was suppressed due to the low-concentration methanol.;
The relative abundance of nitrifying bacteria increased with a low-concentration methanol.;
The CANON system had an excellent self-healing ability without methanol addition.; |
| first_indexed | 2024-04-10T09:37:18Z |
| format | Article |
| id | doaj.art-2c33b48bb4234009aa48c27f04688b8b |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-04-10T09:37:18Z |
| publishDate | 2023-01-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-2c33b48bb4234009aa48c27f04688b8b2023-02-17T16:42:20ZengIWA PublishingWater Science and Technology0273-12231996-97322023-01-0187113014310.2166/wst.2022.417417Low-concentration methanol effect on the microorganisms, nitrogen removal, and recovery of the completely autotrophic nitrogen removal over nitriteXiu Yue0Ao You1Yang Liu2Mincheng Lai3Kun Zhang4 College of Eco-Environmental Technology, Guangdong Industry Polytechnic, Guangzhou 510300, China College of Eco-Environmental Technology, Guangdong Industry Polytechnic, Guangzhou 510300, China College of Eco-Environmental Technology, Guangdong Industry Polytechnic, Guangzhou 510300, China College of Eco-Environmental Technology, Guangdong Industry Polytechnic, Guangzhou 510300, China College of Eco-Environmental Technology, Guangdong Industry Polytechnic, Guangzhou 510300, China Methanol has a significant effect on the performance of the completely autotrophic nitrogen removal over the nitrite (CANON) process. In this research, the effect of low-concentration methanol on the functional microorganisms and nitrogen removal and recovery in the CANON system is investigated. The result shows that the anaerobic ammonium-oxidizing bacteria (AnAOB) was suppressed with low-concentration methanol addition, and the phylum Planctomycetes was hidden. The genus Candidatus Brocadia was restrained, and the relative abundances reduced from 25.5 to 15.0% in the upper biofilm and from 20.3 to 14.3% in the bottom biofilm, respectively. However, low-concentration methanol promoted the nitrifying oxidizing bacteria (NOB) activity. This phenomenon reduced the average ammonium nitrogen removal rate from 95.0 to 70.7%, and the average total nitrogen removal rate decreased from 81.3 to 43.6%, respectively. The results demonstrated that the low-concentration methanol as an organic carbon matter harmed the CANON process. Fortunately, the CANON system had an excellent self-healing ability when the methanol was stopped, with the average ammonium nitrogen removal rate and total nitrogen removal rate returning to 95.5 and 80.9%, respectively. This research supplies a reference for practical engineering design and application by improving the understanding of the effects of low-concentration methanol on CANON process performance. HIGHLIGHTS Low-concentration methanol harmed the CANON process in a SABF system.; The relative abundance of anammox bacteria reduced because of a low-concentration methanol.; The genus Candidatus Brocadia was suppressed due to the low-concentration methanol.; The relative abundance of nitrifying bacteria increased with a low-concentration methanol.; The CANON system had an excellent self-healing ability without methanol addition.;http://wst.iwaponline.com/content/87/1/130anammox bacteriacompletely autotrophic nitrogen removal over nitritelow-concentration methanol effectnitrifying oxidizing bacterianitrogen removal |
| spellingShingle | Xiu Yue Ao You Yang Liu Mincheng Lai Kun Zhang Low-concentration methanol effect on the microorganisms, nitrogen removal, and recovery of the completely autotrophic nitrogen removal over nitrite Water Science and Technology anammox bacteria completely autotrophic nitrogen removal over nitrite low-concentration methanol effect nitrifying oxidizing bacteria nitrogen removal |
| title | Low-concentration methanol effect on the microorganisms, nitrogen removal, and recovery of the completely autotrophic nitrogen removal over nitrite |
| title_full | Low-concentration methanol effect on the microorganisms, nitrogen removal, and recovery of the completely autotrophic nitrogen removal over nitrite |
| title_fullStr | Low-concentration methanol effect on the microorganisms, nitrogen removal, and recovery of the completely autotrophic nitrogen removal over nitrite |
| title_full_unstemmed | Low-concentration methanol effect on the microorganisms, nitrogen removal, and recovery of the completely autotrophic nitrogen removal over nitrite |
| title_short | Low-concentration methanol effect on the microorganisms, nitrogen removal, and recovery of the completely autotrophic nitrogen removal over nitrite |
| title_sort | low concentration methanol effect on the microorganisms nitrogen removal and recovery of the completely autotrophic nitrogen removal over nitrite |
| topic | anammox bacteria completely autotrophic nitrogen removal over nitrite low-concentration methanol effect nitrifying oxidizing bacteria nitrogen removal |
| url | http://wst.iwaponline.com/content/87/1/130 |
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