Energy saving anammox technology-based nitrogen removal and bioenergy recovery from wastewater: Inhibition mechanisms, state-of-the-art control strategies, and prospects

Arora, Amarpreet Singh; Nawaz, Alam; Qyyum, Muhammad Abdul; Ismail, Sherif; Aslam, Muhammad; Tawfik, Ahmed; Yun, Choa Mun; Lee, Moonyong

doi:10.1016/j.rser.2020.110126

Cited by 103 publications

(31 citation statements)

References 197 publications

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“…Therefore, the application of energy-saving and thermal insulation construction technology in the construction of building wall is more important, and it is also the core issue of current research [6]. At present, the economic benefit analysis of building energy conservation is becoming more and more specific [7,8].…”

Section: Introductionmentioning

confidence: 99%

Energy saving technology of wall insulation of harbor building based on energy cost analysis

Wang¹,

Lin²,

Li³

2021

THERM SCI

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Seaport buildings have been affected by marine moisture for a long time, but most of the wall thermal insulation studies have not considered the moisture transfer effect of the wall structure. Therefore, considering the moisture transfer function of the wall structure and the energy consumption of solar radiation, based on the energy cost analysis, the paper puts forward the research on the wall thermal insulation and energy-saving technology of the harbor building based on the energy cost analysis. Grey clustering is used to analyze the project cost and environmental benefits to determine the index weight. By using two kinds of thermal insulation materials and three kinds of insulation positions, the thermal performance and condensation characteristics of the wall are analyzed. It is found that increasing the thickness of the insulation layer is conducive to reducing the heat loss of the wall. Extruded polystyrene foam (XPS) thermal insulation material is better than expandable polystyrene board (EPS) insulation material, while EPS is more economical and energy-saving than XPS.

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Section: Introductionmentioning

confidence: 99%

Energy saving technology of wall insulation of harbor building based on energy cost analysis

Wang¹,

Lin²,

Li³

2021

THERM SCI

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“…On the other hand, organic matter (OM) is detrimental to the partial nitrification process. Effluents with high OM concentrations generate competition between heterotrophs and nitrifying bacteria for oxygen [7,8]. Indeed, the Chemical Oxygen Demand (COD)/N ratio is one of the most critical factors affecting nitrification.…”

Section: Introductionmentioning

confidence: 99%

Partial Nitrification in a Sequencing Moving Bed Biofilm Reactor (SMBBR) with Zeolite as Biomass Carrier: Effect of Sulfide Pulses and Organic Matter Presence

Huiliñir

Fuentes

Estuardo

et al. 2021

Water

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This work aimed to achieve partial nitrification (PN) in a Sequencing Moving Bed Biofilm Reactor SMBBR with zeolite as a biomass carrier by using sulfide pulses in the presence of organic matter as an inhibitor. Two conditions were evaluated: sulfide (HS−) = 5 mg S/L and vvm (air volume per liquid volume per minute, L of air L−1 of liquid min−1) = 0.1 (condition 1); and a HS− = 10 mg S/L and a vvm = 0.5 (condition 2). The simultaneous effect of organic matter and sulfide was evaluated at a Chemical Oxygen Demand (COD) = 350 mg/L and HS− = 5 mg S/L, with a vvm = 0.5. As a result, using the sulfide pulse improved the nitrite accumulation in both systems. However, Total Ammonia Nitrogen (TAN) oxidation in both processes decreased by up to 60%. The simultaneous presence of COD and sulfide significantly reduced the TAN and nitrite oxidation, with a COD removal yield of 80% and sulfide oxidation close to 20%. Thus, the use of a sulfide pulse enabled PN in a SMBBR with zeolite. Organic matter, together with the sulfide pulse, almost completely inhibited the nitrification process despite using zeolite.

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“…NOB is a strong competitor in the PNA process because they can compete with anammox bacteria for NO 2 -N and with AOB for dissolved oxygen (DO) (Agrawal et al, 2018). Some strategies, such as intermittent aeration and substrate inhibition, have been proposed to inhibit the activity of NOB (Arora et al, 2021;Xu et al, 2020). In addition, the balanced relationship may be destroyed due to the coexistence of denitrifiers and other heterotrophs.…”

Section: Introductionmentioning

confidence: 99%

Potential microbial functions and quorum sensing systems in partial nitritation and anammox processes

Feng

Sun

et al. 2021

Water Environment Research

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Diverse microbial communities coexist in the partial nitritation-anaerobic ammonium oxidation (PNA) process, in which nitrogen metabolism and information exchange are two important microbial interactions. In the PNA process, the existence of diverse microorganisms including nitrifiers, anammox bacteria, and heterotrophs makes it challenging to achieve a balanced relationship between anaerobic ammonium oxidation bacteria and ammonia oxidizing bacteria. In this study, potential microbial functions in nitrogen conversion and acyl-homoserine lactones (AHLs)-based quorum sensing (QS) in PNA processes were examined. Candidatus_Kuenenia and Nitrosomonas were the key functional bacteria responsible for PNA, while Nitrospira was detected as the dominant nitrite oxidizing bacteria (NOB). Heterotrophs containing nxr might play a similar function to NOB. The AHLs-QS system was an important microbial communication pathway in PNA systems. N-octanoyl-L-homoserine lactone, N-decanoyl homoserine lactone, and N-dodecanoyl homoserine lactone were the main AHLs, which might be synthesized by nitrogen converting microorganisms and heterotrophs. However, only heterotrophs had the potential to sense and degrade AHLs, such as Saccharophagus (sensing) and Leptospira (degradation). These results provide comprehensive information about the possible microbial functions and interactions in the PNA system and clues for system optimization from a microbial perspective. © 2021 Water Environment Federation • Practitioner points•Potential functions of anammox bacteria, nitrifiers, and heterotrophs were revealed.•Diverse nitrogen conversion and AHLs-quorum sensing related genes were detected.•Anammox bacteria and AOB played important roles in the AHLs synthesis process.•Heterotrophs could sense and degrade AHLs during information exchange.

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Energy saving anammox technology-based nitrogen removal and bioenergy recovery from wastewater: Inhibition mechanisms, state-of-the-art control strategies, and prospects

Cited by 103 publications

References 197 publications

Energy saving technology of wall insulation of harbor building based on energy cost analysis

Energy saving technology of wall insulation of harbor building based on energy cost analysis

Partial Nitrification in a Sequencing Moving Bed Biofilm Reactor (SMBBR) with Zeolite as Biomass Carrier: Effect of Sulfide Pulses and Organic Matter Presence

Potential microbial functions and quorum sensing systems in partial nitritation and anammox processes

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