Nitrogen removal via the nitrite pathway during wastewater co-treatment with ammonia-rich landfill leachates in a sequencing batch reactor

Fudala-Książek, Sylwia; Łuczkiewicz, Aneta; Fitobór, Karolina; Olańczuk-Neyman, K.

doi:10.1007/s11356-014-2641-1

Cited by 63 publications

(14 citation statements)

References 42 publications

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“…Concentration of DO is a crucial parameter influencing nitrification processes and bacterial abundance. Fudala-Książek et al [54] in a partial nitrification (PN) reactor, with controlled DO of 0.5-1.5 mg/L, achieved 72 to 99% ammonia removal, Wei et al [55] reached 99.1% at 0.5-1.0 mg/L, whilst Wang et al [56], treating wastewater highly loaded with ammonia (1.2-1.3 g/L), observed increasing efficiency of ammonia removal with increase concentration of DO from 36% in 0.5-1.0 mg O 2 /L to 59% in 2.0-3.0 mg/L, but a further increase to 4.0 mg/L has an inhibitory effect.…”

Section: Quantitative Dynamics Of Bacterial Communitymentioning

confidence: 99%

“…From an economical point of view, on the technical scale, aeration must be considered also as the most cost-intensive process, consuming up to 90% of the energy used by the plant [63,64]. Therefore, on the one hand, more effective methods of air supply are considered, on the other, biological processes that consume less oxygen are, especially when ammonia removal is the main purpose of treatment, not organics [49,54,55]. However, anaerobic conditions make it difficult to strip the surplus nitrogen to the atmosphere.…”

Section: Simultaneous Ammonia Stripping Supporting Biological Ammoniumentioning

confidence: 99%

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Simultaneous Stripping of Ammonia from Leachate: Experimental Insights and Key Microbial Players

Jurczyk

Koc-Jurczyk

Masłoń

2020

Water

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Air stripping is commonly used to remove the ammonia in multistage treatment systems for municipal landfill leachate (LFL). This paper proposes a novel approach combining the process of stripping with biological removal of ammonia, based on simultaneous nitrification and denitrification (SND) in a single hybrid sequencing batch reactor (HSBR). To avoid the accumulation of free ammonia (N-FAN), the shallow aeration system was used for the treatment of raw LFL with N-TAN level of 1520 mg/L and pH 9.24. The mean N-FAN removal efficiency of 69% with the reaction rate of 55 mg L−1 h−1 and mean ammonium (N-NH4+) removal efficiency of 84% with the reaction rate of 44 mg L−1 h−1 were achieved within a month in such an HSBR (R1). The comparative HSBR (R2), with conventional aeration system maintaining the same concentration of dissolved oxygen (DO ≤ 1 mg/L), was removing only trace amounts of N-FAN and 48% of N-NH4+. The quantitative analysis of 16S rRNA genes indicated that the number of total bacteria, Actinobacteria, Bacteroidetes, Firmicutes, and Beta- and Gammaproteobacteria increased during the operation of both HSBRs, but was always higher in R1. Moreover, the bacterial community shift was observed since the beginning of the experiment; the relative abundance of Firmicutes, and Beta- and Gammaproteobacteria increased by 5.01, 3.25 and 9.67% respectively, whilst the abundance of Bacteroidetes and Actinobacteria decreased by 15.59 and 0.95%. All of the surveyed bacteria groups, except Gammaproteobacteria, correlated significantly negatively (p < 0.001) with the concentrations of N-NH4+ in the outflows from R1. The results allow us to suppose that simultaneous stripping and SND in a single reactor could be a promising, cost-effective and easy-to-operate solution for LFL treatment.

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Section: Quantitative Dynamics Of Bacterial Communitymentioning

confidence: 99%

Section: Simultaneous Ammonia Stripping Supporting Biological Ammoniumentioning

confidence: 99%

Simultaneous Stripping of Ammonia from Leachate: Experimental Insights and Key Microbial Players

Jurczyk

Koc-Jurczyk

Masłoń

2020

Water

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“…Substituting nitrite for nitrate as the intermediate of nitrification-denitrification, the so-called nitrite pathway is a promising BNR process that reduces carbon source consumption by 40% and aeration energy for nitrification by 25% (Antileo et al, 2013;Rodriguez-Garcia et al, 2014;Turk and Mavinic, 1986). The nitrite pathway enables better nitrogen removal performance for wastewater containing insufficient carbon sources (Fudala-Ksiazek et al, 2014;Turk and Mavinic, 1989). Because of the above advantages, the nitrite pathway has become an area of focus for wastewater treatment research (Ge et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Effects of free nitrous acid treatment conditions on the nitrite pathway performance in mainstream wastewater treatment

Duan

Wang

Erler

et al. 2018

Science of The Total Environment

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Inline sludge treatment using free nitrous acid (FNA) was recently shown to be effective in establishing the nitrite pathway in a biological nitrogen removal system. However, the effects of FNA treatment conditions on the nitrite pathway performance remained to be investigated. In this study, three different FNA treatment frequencies (daily sludge treatment ratios of 0.22, 0.31 and 0.38, respectively), two FNA concentrations (1.35 mgN/L and 4.23 mgN/L, respectively) and two influent feeding regimes (one- and two-step feeding) were investigated in four laboratory-scale sequencing batch reactors. The nitrite accumulation ratio was positively correlated to the FNA treatment frequency. However, when a high treatment frequency was used e.g., daily sludge treatment ratio of 0.38, a significant reduction in ammonia oxidizing bacteria (AOB) activity occurred, leading to poor ammonium oxidation. AOB were able to acclimatise to FNA concentrations up to of 4.23 mgN/L, whereas nitrite oxidizing bacteria (NOB) were limited by an FNA concentration of 1.35 mgN/L over the duration of the study (up to 120 days). This difference in sensitivity to FNA could be used to further enhance nitrite accumulation, with 90% accumulation achieved at an FNA concentration of 4.23 mgN/L and a daily sludge treatment ratio of 0.31 in this study. However, this high level of nitrite accumulation led to increased NO emission, with emission factors of up to 3.9% observed. The NO emission was mitigated (reduced to 1.3%) by applying two-step feeding resulting in a nitrite accumulation ratio of 45.1%. Economic analysis showed that choosing the optimal FNA treatment conditions depends on a combination of the wastewater characteristics, the nitrogen discharge standards, and the operational costs. This study provides important information for the optimisation and practical application of FNA-based sludge treatment technology for achieving the mainstream stable nitrite pathway.

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“…In the early 1990s, Prince George's County in Maryland, USA, applied a bioretention system for the first time to replace traditional non-point source pollution control, namely, best management practices (BMPs) [8]. The structure design, experiment, and hydrological or data simulation of the bioretention system has been investigated thereafter in the United States, the United Kingdom, Australia, Germany, New Zealand, and other countries [9][10]. However, long-term exploration for rainwater purification mechanism, system, and other actual running effects remains limited.…”

Section: Introductionmentioning

confidence: 99%

Temporal and Spatial Variations in Soil TOC, TN, and TP, and their Relationships in Bioretention Tanks

Guo

et al. 2018

Pol. J. Environ. Stud.

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This study aims to explore the temporal and spatial variations of soil total organic carbon (TOC), total nitrogen (TN), total phosphorus (TP), and the relationships between C/N, C/P and TOC, TN, and TP in bioretention tanks. Two bioretention tanks (tank No. 1: depth of 0~20 cm was vacant aquifer layer, 20~90cm, filled with planting soil, 90~105 cm, filled with gravel; tank No. 3: 0~20 cm was aquifer layer, 20~50 cm, filled with planting soil, 50~90 cm, filled with blast furnace slag and sand; 90~105cm, filled with gravel) were used in simulation stormwater runoff purification experiments to collect planting soil samples at intervals of one hour before inflow and 24 hours after the end of inflow. The results revealed that soil TN, TP, and TOC in 2 bioretention tanks were mainly concentrated at 10~30 cm in soil. The contents of TN and TP varied from 0.32 g kg -1 to 0.50 g kg -1 and from 0.83 g kg -1 to 1.35 g kg -1 within the investigated zone, respectively. Soil TN content in the 2 bioretention tanks before the inflow was slightly greater than after the inflow, but the opposite was true for TP, as it was less before the inflow than after. The potential of TN and TP fixation in No. 1 was higher than that in No, 3 within the upper 30 cm depth, which were related to the infiltration rate of underlying fillers (the underlying fillers of No. 1 is planting soil, and which is the blast furnace slag and sand in No. 3). The TOC content in the 2 bioretention tanks varied from 4.24 g kg -1 to 8.97 g kg -1, and the average contents decreased with the increasing depths. The C/N and C/P were positively correlated with TOC, while they were negatively correlated with TN and TP contents, which showed that soil C/N and C/P were mainly controlled by TOC in soil. The conclusions can provide references for the design and operation evaluation of bioretention facilities.

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Nitrogen removal via the nitrite pathway during wastewater co-treatment with ammonia-rich landfill leachates in a sequencing batch reactor

Cited by 63 publications

References 42 publications

Simultaneous Stripping of Ammonia from Leachate: Experimental Insights and Key Microbial Players

Simultaneous Stripping of Ammonia from Leachate: Experimental Insights and Key Microbial Players

Effects of free nitrous acid treatment conditions on the nitrite pathway performance in mainstream wastewater treatment

Temporal and Spatial Variations in Soil TOC, TN, and TP, and their Relationships in Bioretention Tanks

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