Fe-C wrapped in polyurethane sponge cubes tied in anoxic zones to enrich multiple denitrifying bacteria enhancing wastewater nitrogen removal

Liang, Yifan; Pan, Zengrui; Sheng, Jianlong; Ni, Yajuan; Li, Jun

doi:10.1016/j.jwpe.2022.103384

Cited by 13 publications

(1 citation statement)

References 43 publications

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“…14 Autotrophic denitrication using iron and hydrogen as electron donors and inorganic carbon source has also been studied. 15,16 However, these new process is not yet widely applicable in WWTPs due to technological limitations. Despite ongoing efforts to develop new methods, adding an external carbon source remains a common approach to improving the nitrogen removal rate in WWTPs.…”

Section: Introductionmentioning

confidence: 99%

A municipal wastewater treatment plant “drinking beer” for reduction of cost and carbon emission

et al. 2023

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Section: Introductionmentioning

confidence: 99%

A municipal wastewater treatment plant “drinking beer” for reduction of cost and carbon emission

et al. 2023

Self Cite

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Nitrogen removal and microbial community variation in a shallow constructed wetland with Fe–C porous filter material as substrate

Chu,

Cao,

et al. 2024

CLEAN Soil Air Water

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This study aims to examine the nitrogen removal characteristics and microbial community variation at low hydraulic retention time (HRT) in a shallow constructed wetland (SCW) using iron–carbon (Fe–C) porous filter material (PFM) as substrate. Effects of influent nitrogen forms and chemical oxygen demand (COD)/N ratio on nitrogen removal performance at HRT of 1 day were investigated. Results showed that total nitrogen (TN) removal declined with the decrease of influent NH4+‐N‐to‐NO3−‐N ratio. When the influent NH4+‐N/NO3−‐N ratio was 0.1, TN removal decreased by 15.4% compared with that at ratio of 2.0. The increase of influent COD/N ratio enhanced NO3−‐N reduction, and TN removal reached 74.5% at influent COD/N ratio 7.0. The microbial community was analyzed for the biofilm samples on Fe–C PFM at front (WF), middle (WM), and back (WB) of SCW. Proteobacteria, Bacteroidetes, Chloroflexi, and Firmicutes were dominant bacteria phyla. The relative abundance of genera involved in the nitrification and denitrification decreased with the influent flow. The iron autotrophic denitrifying and macromolecular organics degrading bacteria were abundant in the middle and back of SCW. Microbial nitrification and denitrification, plant uptake, and plant synergism contributed to 86.3%, 7.41%, and 19.9% of N removal, respectively. These results demonstrated that the SCW with Fe–C PFM as substrate was efficient in nitrogen removal at low HRT.

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Influence of Influent Load on Nitrification/Denitrification with MBBR for Oil Shale Retorting Wastewater Treatment: Performance and Microbial Community Structure

Zhang,

Liu,

Huang

et al. 2024

Water Air Soil Pollut

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Fe-C wrapped in polyurethane sponge cubes tied in anoxic zones to enrich multiple denitrifying bacteria enhancing wastewater nitrogen removal

Cited by 13 publications

References 43 publications

A municipal wastewater treatment plant “drinking beer” for reduction of cost and carbon emission

A municipal wastewater treatment plant “drinking beer” for reduction of cost and carbon emission

Nitrogen removal and microbial community variation in a shallow constructed wetland with Fe–C porous filter material as substrate

Influence of Influent Load on Nitrification/Denitrification with MBBR for Oil Shale Retorting Wastewater Treatment: Performance and Microbial Community Structure

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