Advance in the sulfur-based electron donor autotrophic denitrification for nitrate nitrogen removal from wastewater

Shao, Lixin; Wang, Dexi; Chen, Gong; Zhao, Xibo; Fan, Lihua

doi:10.1007/s11274-023-03802-1

Cited by 6 publications

(4 citation statements)

References 134 publications

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“…Although the efficiency is low compared to other works [8,24], the simultaneous process using elemental sulfur as an electron donor can eliminate the nitrogen, and the development of a kinetic model and the obtention of the kinetic parameters are necessary.…”

Section: Performance Of Nitrification-autotrophic Denitrification In ...mentioning

confidence: 93%

“…It is known that S 0 has poor water solubility, which restricts the mass transfer betwee solid and liquid phases and produces a lower reaction rate [22]. The S0 particle sizes gr influence the mass transfer rate, which, in turn, affects the NO3 − -N removal efficiency [23 Although the efficiency is low compared to other works [8,24], the simultaneous cess using elemental sulfur as an electron donor can eliminate the nitrogen, and th velopment of a kinetic model and the obtention of the kinetic parameters are necessa (B) In comparison, the average denitrification efficiency throughout the operation was 44.9%. This means that denitrification using S 0 was the reaction that controlled all of the N removal.…”

Section: Performance Of Nitrification-autotrophic Denitrification In ...mentioning

confidence: 98%

“…It is known that S 0 has poor water solubility, which restricts the mass transfer between the solid and liquid phases and produces a lower reaction rate [22]. The S0 particle sizes greatly influence the mass transfer rate, which, in turn, affects the NO 3 − -N removal efficiency [23,24].…”

Section: Performance Of Nitrification-autotrophic Denitrification In ...mentioning

confidence: 99%

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Nitrification–Autotrophic Denitrification Using Elemental Sulfur as an Electron Donor in a Sequencing Batch Reactor (SBR): Performance and Kinetic Analysis

Corbalán,

Da Silva,

Barahona

et al. 2024

Sustainability

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Simultaneous nitrification and autotrophic denitrification (SNAD) has received attention as an efficient biological nitrogen removal alternative. However, SNAD using elemental sulfur (S0) has scarcely been studied. Thus, the main objective of this research was to study the behavior of a simultaneous nitrification–autotrophic denitrification operation in a sequential batch reactor (SNAD-SBR) at a lab scale using S0 as an electron donor, including its kinetics. Two-scale reactors were operated at lab scales in cycles for 155 days with an increasing nitrogen loading rate (NLR: 0.0296 to 0.0511 kg N-NH4+/m3/d) at 31 °C. As a result, simultaneous nitrification–autotrophic denitrification using S0 as an electron donor was performed successfully, with nitrification efficiency of 98.63% and denitrification efficiency of 44.9%, with autotrophic denitrification as the limiting phase. The kinetic model adjusted for ammonium-oxidizing bacteria (AOB) was the Monod-type kinetic model (µmax = 0.791 d−1), while, for nitrite-oxidizing bacteria (NOB), the Haldane-type model was employed (µmax = 0.822 d−1). For denitrifying microorganisms, the kinetic model was adjusted by a half order (k1/2v = 0.2054 mg1/2/L1/2/h). Thus, we concluded that SNAD could be feasible using S0 as an electron donor, with kinetic behavior similar to that of other processes.

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Section: Performance Of Nitrification-autotrophic Denitrification In ...mentioning

confidence: 93%

Section: Performance Of Nitrification-autotrophic Denitrification In ...mentioning

confidence: 98%

See 1 more Smart Citation

Nitrification–Autotrophic Denitrification Using Elemental Sulfur as an Electron Donor in a Sequencing Batch Reactor (SBR): Performance and Kinetic Analysis

Corbalán,

Da Silva,

Barahona

et al. 2024

Sustainability

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“…With the increase in height, the NO 3 − -N concentration gradually decreased from outlet 1 to outlet 4, and most of the NO 3 − -N reduction reaction occurred at the bottom of the reactor. This was probably because the influent water was fed from the bottom to the top, the concentration of NO 3 − -N was higher in the middle and lower part of the reactor, and the microorganism concentration was more abundant in this area [26,27].…”

Section: Investigation Of Nitrogen Removal Performance For Simulated ...mentioning

confidence: 99%

Fabrication of a Sulfur/Steel Slag-Based Filter and Its Application in the Denitrification of Nitrate-Containing Wastewater

Hou,

Zhu,

Tang

et al. 2024

Water

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To solve the problems of deep nitrogen removal in wastewater treatment plants and the high value utilization of steel slag in the metallurgical industry, this work aims to prepare a sulfur/steel slag-based filter using the melting method. The melt granulation method and the utilization of metallurgical waste were the main innovations of this work. On this basis, the nitrogen removal performance of the filter media in simulated wastewater and actual wastewater were systematically investigated. Furthermore, the factors affecting the nitrogen removal performance of the filter media were studied, and pilot experiments were carried out. The microbial community in the reactor was also analyzed. The results showed that when the mass ratio of sulfur and steel slag was 9:1, the filter media could remove up to 90% of TN in simulated wastewater at room temperature, with a hydraulic retention time (HRT) of 5–20 h and an influent TN of 21 mg/L. In the simulated wastewater, the effluent NO3−-N was less than 2 mg/L, the SO42− was less than 200 mg/L, and the pH was between 6 and 8. The removal of TN from actual wastewater was also greater than 90% at room temperature under a hydraulic retention time (HRT) of 8–20 h and an influent TN of 8 mg/L. Influence factor experiments were conducted at room temperature, with a C/N of 2:1, a DO of 0.9–1 mg/L, and an HRT of 4 h. The results of the pilot experiment confirmed that the effluent TN was stable below 10 mg/L. The filter media was compounded for practical engineering applications. Microbial community analysis showed that the sulfur autotrophic denitrifying bacterial species Thiobacillus accounted for 3.69% and 5.55% of the simulated and actual wastewater systems, respectively. This work provides a novel strategy for the application of solid metallurgical waste in the field of nitrate-containing wastewater treatment.

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Comparison of nitrification performance in SBR and SBBR with response to NaCl salinity shock: Microbial structure and functional genes

Wen,

Cui,

Lin

et al. 2024

Environmental Research

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Advance in the sulfur-based electron donor autotrophic denitrification for nitrate nitrogen removal from wastewater

Cited by 6 publications

References 134 publications

Nitrification–Autotrophic Denitrification Using Elemental Sulfur as an Electron Donor in a Sequencing Batch Reactor (SBR): Performance and Kinetic Analysis

Nitrification–Autotrophic Denitrification Using Elemental Sulfur as an Electron Donor in a Sequencing Batch Reactor (SBR): Performance and Kinetic Analysis

Fabrication of a Sulfur/Steel Slag-Based Filter and Its Application in the Denitrification of Nitrate-Containing Wastewater

Comparison of nitrification performance in SBR and SBBR with response to NaCl salinity shock: Microbial structure and functional genes

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