Results 1 to 10 of about 1,586 (157)

Nitrite improved nitrification efficiency and enriched ammonia-oxidizing archaea and bacteria in the simultaneous nitrification and denitrification process [PDF]

open access: yesWater Research X, 2023
Simultaneous nitrification and denitrification (SND) is effective and energy-saving for wastewater treatment. As an inevitable intermediate product in the SND process, nitrite affects the efficiency of ammonia oxidation and the composition of nitrifiers.
Yu Xiang   +6 more
doaj   +2 more sources

Comparison of Simultaneous Nitrification and Denitrification for Three Different Reactors. [PDF]

open access: yesBiomed Res Int, 2015
Discharge of high NH4-N containing wastewater into water bodies has become a critical and serious issue due to its negative impact on water and environmental quality. In this research, the performance of three different reactors was assessed and compared with regard to the removal of NH4-N from wastewater.
Khanitchaidecha W   +3 more
europepmc   +4 more sources

Short-cut nitrogen removal from high-strength ammonia wastewater in a sequencing batch biofilm reactor: roles of NO and its production mechanism [PDF]

open access: yesFrontiers in Microbiology
Nitric oxide (NO) is a key intermediate in the biological nitrogen removal process. However, its role and production mechanism is still not fully understood.
Junkai Zhao   +11 more
doaj   +2 more sources

Model development for simultaneous nitrification and denitrification

open access: yesWater Science and Technology, 1999
The aim of this study is to simulate the behaviour of nitrogen and carbon compounds in a sequencing batch reactor (SBR) by incorporating a dynamic microbial flee model. The results have shown that both flee diameter and liquid phase concentration are important factors influencing the internal flee reaction rate.
Lant Paul, Keller Jürg
exaly   +5 more sources

Effect of magnetic fields on simultaneous nitrification and denitrification microbial systems

open access: yesWater Science and Technology, 2023
Magnetic fields positively influence the nitrogen removal efficiency in activated sludge systems. However, the structural succession pattern of microorganisms by magnetic fields still remains further explored.
Xintong Song   +4 more
doaj   +3 more sources

Advancement in Anaerobic Ammonia Oxidation Technologies for Industrial Wastewater Treatment and Resource Recovery: A Comprehensive Review and Perspectives [PDF]

open access: yesBioengineering
Anaerobic ammonium oxidation (anammox) technologies have attracted substantial interest due to their advantages over traditional biological nitrogen removal processes, including high efficiency and low energy demand.
Pradeep Singh   +8 more
doaj   +2 more sources

Microalgae-bacteria symbiosis enhanced nitrogen removal from wastewater in an inversed fluidized bed bioreactor: performance and microflora [PDF]

open access: yesFrontiers in Microbiology
Conventional wastewater biological nitrogen removal (BNR) processes require a large amount of air and external organic carbon, causing a significant increase in operating costs and potential secondary pollution.
Xin Zheng   +10 more
doaj   +2 more sources

Simultaneous nitrification and denitrification in biofilters with real time aeration control

open access: yesWater Science and Technology, 2001
The aim of this article is to present a new biological aerated filter (BAF) for nitrogen removal based on simultaneous nitrification and denitrification. Contrary to the systems which integrate both an aerated and a non-aerated zone to allow complete nitrogen removal in one compact or two different units (pre-denitrification and nitrification), this ...
N, Puznava, M, Payraudeau, D, Thornberg
exaly   +3 more sources

EVALUATION OF NITRIFICATION PROCESS IN CONSTRUCTED WETLANDS: A REVIEW ON NOVEL BIOLOGICAL NITROGEN REMOVAL PROCESSES

open access: yesJournal of Engineering and Sustainable Development, 2022
Constructed wetlands attracted the attention of researchers as a sustainable, economic, and efficient wastewater treatment technique. Many papers showed the efficient performance of constructed wetlands to treat municipal, industrial, livestock ...
Yasir Talib Hameed   +3 more
doaj   +3 more sources

Simultaneous heterotrophic nitrification and aerobic denitrification potential of Paenibacillus sp. strain GLM-08 isolated from lignite mine waste and its role ammonia removal from mine waste water

open access: yesWater Science and Technology, 2022
Paenibacillus sp. strain GLM-08 was isolated from a lignite mine waste site in the Barmer basin, Rajasthan, India. The strain is efficient in heterotrophic nitrification and aerobic denitrification. This bacterium could remove approximately more than 95%
Silisti Karuriya, Sangeeta Choudhary
doaj   +1 more source

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