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Showing 1 to 10 of 10 for “"Partial Denitrification"”.
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Startup and Pilot Testing of MBBR and IFAS Partial Denitrification/Anammox Processes
Partial denitrification/anammox (PdNA) is an emerging biological nutrient removal (BNR) process that can be used to remove ammonia (NH3) and NOx from wastewater. This process is a combination of partial denitrification (PdN), which serves to reduce nitrate (NO3) to nitrite (NO2), and anaerobic …
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Carbon-efficient Wastewater Treatment Through Resource Recovery, Process Intensification, and Partial Denitrification Anammox
… eliminate the energy consuming MLR, endogenous denitrification was taken advantage through a synergistic integration with partial nitrification, partial denitrification anammox (PdNA), and enhanced biological phosphorus removal (EBPR). This idea was tested in a pilot setup treating real primary …
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Assessment of a Fixed Media Partial Denitrification/Anammox Process Startup in a Full-Scale Treatment Train
Partial denitrification anammox (PdNA) is an emerging wastewater treatment technology with the potential to increase process capacity and save on energy and carbon. PdNA circumvents potential issues with stability of the more familiar mainstream partial nitritation anammox (PNA) process. The PdNA …
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Pilot Scale Application of Partial Nitritation Anammox and Partial Denitrification Anammox Treating Industrial Fertilizer Waste with High Ammonia and Nitrate
… cost effective than conventional nitrification-denitrification. The first method, partial nitritation anammox (PNA) is very effective at removing high strength NH4 from wastewater. Although PNA is effective in removing NH4, it does not remove NO3, which is why the second method of shortcut …
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Bioaugmentation and Retention of Anammox Granules to a Mainstream Deammonification Bio-Oxidation Pilot with a Post Polishing Anoxic Partial Denitrification/Anammox Moving Bed Biofilm Reactor
… optimization of carbon addition to an anoxic partial denitrification anammox (PdN/A) moving bed biofilm reactor (MBBR) testing glycerol, acetate, and methanol as carbon sources to maximize total inorganic nitrogen (TIN) removal through the anammox pathway and to minimize effluent TIN. A carbon …
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Intensification of Biological Nutrient Removal Processes
… removal processes; including nitrite shunt, partial nitritation/anammox, and partial denitrification/anammox, as well as low-carbon biological phosphorus removal, were critically-evaluated in this study with an overall objective of intensification of existing infrastructure. At the beginning …
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Ecology and adaptation of denitrifiers across genomes and environments
… from anaerobic ammonia oxidation (anammox) and denitrification. The stepwise reduction of nitrate to nitrite, nitric oxide, nitrous oxide, and N2 gas, denitrification can be performed by diverse taxa and acts as a major sink of fixed nitrogen within low oxygen environments, and contribute to …
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The Investigation of Nitrite Accumulation and Biological Phosphorus Removal in an Intermittently Aerated Process Combining Shortcut Nitrogen Removal and Sidestream Biological Phosphorus Removal
… that the nitrite accumulation was due to partial denitrification of nitrate to nitrite by bacteria using internally stored carbon, because profiles and activity tests showed anoxic nitrite accumulation at the end of the aerobic process. Post-anoxic denitrification using internally stored …
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Evaluation of Glycerol and Waste Alcohol as Supplemental Carbon Sources for Denitrification
… storage coincident with rapid nitrate to nitrite denitrification, followed by slow nitrite reduction to nitrogen gas. This can possibly lead to degradation of the internally stored glycerol in the aerobic zones of the following cycle, implying a significant economic impact with glycerin addition. …
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Startup Strategies for Mainstream Anammox in Moving Bed Biofilm Reactors (MBBRs)
Partial denitrification/anammox (PdNA) is a biological nitrogen removal technology with significant carbon and aeration savings when compared with conventional nitrification/denitrification. Yet despite these benefits, the use of PdNA in mainstream wastewater treatment remains limited. One of the …