Element sulfur-based autotrophic denitrification constructed wetland as an efficient approach for nitrogen removal from low C/N wastewater

Water Research, Journal Year: 2022, Volume and Issue: 226, P. 119258 - 119258

Published: Oct. 15, 2022

Language: Английский

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A Review on Microorganisms in Constructed Wetlands for Typical Pollutant Removal: Species, Function, and Diversity

Frontiers in Microbiology, Journal Year: 2022, Volume and Issue: 13

Published: April 5, 2022

Constructed wetlands (CWs) have been proven as a reliable alternative to traditional wastewater treatment technologies. Microorganisms in CWs, an important component, play key role processes such pollutant degradation and nutrient transformation. Therefore, in-depth analysis of the community structure diversity microorganisms, especially for functional CWs is understand its performance patterns explore optimized strategies. With advances molecular biotechnology, it now possible analyze study microbial communities species composition complex environments. This review performed bibliometric studies evaluate research trends identify most studied pollutants. On this basis, main microorganisms involved removal these pollutants are summarized, effects on investigated. The result showed that phylum include Proteobacteria, Bacteroidetes, Actinobacteria Firmicutes. These can remove from by catalyzing chemical reactions, biodegradation, biosorption, supporting plant growth, etc. Regarding alpha diversity, heavy metals high concentrations nitrogen phosphorus significantly reduce richness whereas antibiotics cause large fluctuations diversity. Overall, provide new ideas directions CWs.

Language: Английский

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High-rate iron sulfide and sulfur-coupled autotrophic denitrification system: Nutrients removal performance and microbial characterization

Water Research, Journal Year: 2023, Volume and Issue: 231, P. 119619 - 119619

Published: Jan. 17, 2023

Iron sulfides-based autotrophic denitrification (IAD) is a promising technology for nitrate and phosphate removal from low C:N ratio wastewater due to its cost-effectiveness sludge production. However, the slow kinetics of IAD, compared other sulfur-based (SAD) processes, limits engineering application. This study constructed co-electron-donor (FeS S0 with volume 2:1) iron sulfur (ISAD) biofilter operated at as short 1 hr hydraulic retention time (HRT). Long-term operation results showed that superior total nitrogen removals ISAD were 90–100% 1–12 h HRT, highest rate up 960 mg/L/d. Considering sulfate production, HRT 3 could be optimal condition. Such performance in was achieved interactions between FeS S0, which accelerated process maintained acidity-alkalinity balance. Metagenomic analysis found enriched nitrate-dependent iron-oxidizing (NDFO) bacteria (Acinetobacter Acidovorax), sulfur-oxidizing (SOB), dissimilatory reduction ammonia (DNRA) likely supported stable reduction. The metabolic pathway completely DNRA, coupled oxidation, disproportionation, oxidation precipitation co-electron donors, responsible high-rate removal. provides potential highly efficient post-denitrification sheds light on balanced microbial S-N-Fe transformation.

Language: Английский

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Advances in elemental sulfur-driven bioprocesses for wastewater treatment: From metabolic study to application

Water Research, Journal Year: 2022, Volume and Issue: 213, P. 118143 - 118143

Published: Feb. 2, 2022

Language: Английский

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An overview of in-situ remediation for nitrate in groundwater

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 804, P. 149981 - 149981

Published: Aug. 28, 2021

Language: Английский

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Roles, mechanism of action, and potential applications of sulfur-oxidizing bacteria for environmental bioremediation

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 852, P. 158203 - 158203

Published: Aug. 28, 2022

Language: Английский

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High efficient bio-denitrification of nitrate contaminated water with low ammonium and sulfate production by a sulfur/pyrite-based bioreactor

Bioresource Technology, Journal Year: 2022, Volume and Issue: 346, P. 126669 - 126669

Published: Jan. 5, 2022

Language: Английский

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Pyrite coupled with steel slag to enhance simultaneous nitrogen and phosphorus removal in constructed wetlands

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 470, P. 143944 - 143944

Published: June 5, 2023

Language: Английский

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New insights into substrates shaped nutrients removal, species interactions and community assembly mechanisms in tidal flow constructed wetlands treating low carbon-to-nitrogen rural wastewater

Water Research, Journal Year: 2024, Volume and Issue: 256, P. 121600 - 121600

Published: April 11, 2024

Language: Английский

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A critical review on the application of pyrite in constructed wetlands: Contaminants removal and mechanism

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 63, P. 105353 - 105353

Published: May 7, 2024

Language: Английский

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