Vertical spatial denitrification performance and microbial community composition in denitrification biofilters coupled with water electrolysis

Tang, Xinhua; Huang, Yu; Tan, Shenyu; Yang, Heng

doi:10.1039/d4ra02260b

RSC Adv.

2024

DOI: 10.1039/d4ra02260b

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Vertical spatial denitrification performance and microbial community composition in denitrification biofilters coupled with water electrolysis

Xinhua Tang,

Yu Huang,

Shenyu Tan

et al.

Abstract: Vertical spatial denitrification performance, microbial community and key denitrification genes in a biofilter coupled with water electrolysis were studied to explain the mechanisms of heterotrophic–hydrogen autotrophic denitrification.

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2024

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Cited by 2 publications

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The impact of the phosphorus limitation on denitrification efficiency and specific sludge production in industrial wastewater treatment

Stanek,

Zábranská

2024

Water Science &Amp; Technology

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Heterotrophic denitrification is applied to the treatment of industrial wastewater from nitrated products with high concentrations of residual nitric and sulphuric acids and without organic matter. Wastewater with a concentration of nitrate nitrogen of 100–400 mg/L needs to be neutralized, methanol is used as an organic substrate, and phosphoric acid is used as a nutrient supplement. The pilot model of continuous denitrification was constructed with real wastewater influent. Experiments with different dosages of phosphorus 0–16.8 mg/g P/N-NOx were carried out to determine the effect of phosphorus limitation on the efficiency of denitrification. The minimum phosphorus concentration of 0.24 mg/L, representing a specific dose of P to remove oxidized nitrogen of 1.8 mg/g for sufficient denitrification efficiency was found after a sufficient time of adaptation of 70 days of the denitrification culture to low phosphorus concentrations in the reactor. Long-term successive reduction of phosphorus supply led to an increased proportion of organisms within the denitrifying sludge with lower phosphorus requirements. The results indicated that potential savings could be achieved by reducing phosphoric acid demand although limited phosphorus supply did not reduce specific sludge production.

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The impact of the phosphorus limitation on denitrification efficiency and specific sludge production in industrial wastewater treatment

Stanek,

Zábranská

2024

Water Science &Amp; Technology

View full text Add to dashboard Cite

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Application of Decentralized Wastewater Treatment Technology in Rural Domestic Wastewater Treatment

Li,

Zhang,

Zhao

et al. 2024

Sustainability

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The management of domestic wastewater in rural areas has always been challenging due to characteristics such as the wide distribution and dispersion of rural households. There are numerous domestic sewage discharge methods used in rural areas, and it is difficult to treat the sewage. To address this problem, decentralized wastewater treatment systems (DWTSs) have been installed around the globe to reuse and recycle wastewater for non-potable uses such as firefighting, toilet flushing, and landscape irrigation. This study compares the currently implemented treatment processes by investigating them from the point of view of their performance and their advantages and disadvantages to provide new ideas for the development of rural wastewater treatment technologies. According to conventional treatment technologies including activated sludge (OD, A/O, A/A/O, SBR), biofilm (biofilter, MBBR, biological contact oxidation, biofluidized bed) and biogas digesters, natural biological treatment technologies including artificial wetlands (surface flow, vertical flow, horizontal submerged flow artificial wetlands), soil percolation systems (slow, fast, subsurface percolation and surface diffusion) and stabilization pond technology and combined treatment technologies are categorized and further described.

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Vertical spatial denitrification performance and microbial community composition in denitrification biofilters coupled with water electrolysis

Abstract: Vertical spatial denitrification performance, microbial community and key denitrification genes in a biofilter coupled with water electrolysis were studied to explain the mechanisms of heterotrophic–hydrogen autotrophic denitrification.

Cited by 2 publications

References 40 publications

The impact of the phosphorus limitation on denitrification efficiency and specific sludge production in industrial wastewater treatment

The impact of the phosphorus limitation on denitrification efficiency and specific sludge production in industrial wastewater treatment

Application of Decentralized Wastewater Treatment Technology in Rural Domestic Wastewater Treatment

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