Ammonia–Nitrogen Removal from Centrate 10 Years of Testing and Operating Experience in New York City

Carrio, L.; Sexton, J.; Lopez, A.; Gopalakrishnam, K.; Sapienza, V.

doi:10.2175/193864703784640451

Cited by 7 publications

(4 citation statements)

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“…The addition of sodium hydroxide (NaOH) at multiple locations provide supplemental alkalinity to maintain nitrification reaction and narrowly control the pH between 7.2 to 7.8 (Bowden et al, 2016;Ramalingam et al, 2017). The sidestream reactor receives a continuous flow of RAS from the main plant, along with centrate and a fraction of the NOx-N rich mixed liquor via an internal recycle to the first pass, which is an anoxic zone (Bowden et al, 2016;Carrio et al, 2003). Nitrified mixed liquor is fed to the main RAS channel to bioaugment the two preceding aeration tanks.…”

Section: Aeration Tank #3 (At-3) Process -26 Th Ward Water Pollution ...mentioning

confidence: 99%

“…Ward WPCP (Carrio et al, 2003). The mainstream high-rate BNR process benefited from the bioaugmentation by displaying stable operation during winter months (i.e., temperature <12 o C) at a low SRT of 2 to 3 days.…”

Section: Aeration Tank #3 (At-3) Process -26 Th Ward Water Pollution ...mentioning

confidence: 99%

“…The AT-3 process was later implemented by the New York City DEP at the Hunts Point and Brower Bay WPCP for sidestream treatment via conventional nitrogen removal (Ramalingam et al, 2017). Hunts Point and Brower Bay benefited from the AT-3 process configuration by achieving an ammonia removal efficiency of 70% and 90%, respectively (Carrio et al, 2003).…”

Section: Aeration Tank #3 (At-3) Process -26 Th Ward Water Pollution ...mentioning

confidence: 99%

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Sidestream Treatment of Anaerobically Digested Sludge Centrate Using Activated Sludge and Aerobic Granular Sludge Sequencing Batch Reactors

Morgan

2024

Preprint

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<p>In this research, two 1.5-L activated sludge (AS)-sequencing batch reactors (SBRs) were seeded with return activated sludge (RAS) and operated at a hydraulic retention time (HRT) of 72-hr to enable nitrification of centrate with an ammonia-nitrogen (NH -N)3concentration of 572 ± 28 mg/L. Secondly, three 1.2-L aerobic granular sludge (AGS)-SBRs were each operated at a 12-hr followed by an 8-hr HRT to cultivate aerobic granules from RAS. The AGS-SBRs were fed with a combination of diluted and synthetic centrate to perform nitrification only and simultaneous nitrification-denitrification (SND). NH3-N removal efficiencies in the AS-SBR operated with supplemental alkalinity was 100 ± 0% (26 to 93 day), while the control AS-SBR that operated th nd without supplemental alkalinity achieved 61 ± 2% (18 to 52 day) due to incomplete nitrification. The AGS-SBRs fed with diluted centrate, synthetic centrate, and diluted centrate with supplemental organic carbon displayed average NH -N 3emoval efficiencies of 93 ± 19%, 94 ± 16%, and 92 ± 9%, respectively.</p>

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Section: Aeration Tank #3 (At-3) Process -26 Th Ward Water Pollution ...mentioning

confidence: 99%

Section: Aeration Tank #3 (At-3) Process -26 Th Ward Water Pollution ...mentioning

confidence: 99%

Section: Aeration Tank #3 (At-3) Process -26 Th Ward Water Pollution ...mentioning

confidence: 99%

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Sidestream Treatment of Anaerobically Digested Sludge Centrate Using Activated Sludge and Aerobic Granular Sludge Sequencing Batch Reactors

Morgan

2024

Preprint

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“…Simplicity is the benefit of this bioaugmentation approach. In addition, the construction of a separate nutrient-removing parallel plant is occurring frequently as treatment plants expand; only the expanded capacity may be required to meet the new effluent permits (Carrio et al, 2003;Constantine, 2006). Treatment plants can benefit from bioaugmentation by collecting waste sludge from an adjacent plant, requiring few modifications, if sufficient oxygen transfer and biomass thickening capability exists.…”

Section: Bioaugmentation Strategiesmentioning

confidence: 99%

Bioaugmentation to Improve Nitrification in Activated Sludge Treatment

Leu

Stenstrom

2010

Water Environment Research

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Bioaugmentation is a proposed technique to improve nutrient removal in municipal wastewater treatment. Compared with commonly used nitrification/denitrification (NDN) processes, bioaugmentation may be able to reduce tankage or land requirements. Many approaches for bioaugmentation have been developed, but few studies have compared the benefits among different approaches. This paper quantifies the effectiveness of bioaugmentation processes and investigates three major ''onsite'' bioaugmentation alternatives: 1) the parallel-plants approach, which uses acclimated biomass grown in a nitrifying ''long-SRT'' (sludge retention time) plant to augment a low-SRT treatment plant; 2) the enricher-reactor approach, which uses an offline reactor to produce the augmentation cultures; and 3) the enricher-reactor/return activated sludge (ER-RAS) approach, which grows enrichment culture in a reaeration reactor that receives a portion of the recycle activated sludge. Kinetic models were developed to simulate each approach, and the benefits of various approaches are presented on the same basis with controllable parameters, such as bioaugmentation levels, aeration tank volume, and temperatures. Examples were given to illustrate the potential benefits of bioaugmentation by upgrading a ''carbon-only'' wastewater treatment plant to nitrification. Simulation results suggested that all bioaugmentation approaches can decrease the minimum SRT for nitrification. The parallelplants approach creates the highest concentration of biomass but may fail at too low temperature. The ER-RAS approach likely would be more useful at lower temperature and required less reactor volume; enricherreactor approach would likely be more advantageous in the presence of inhibitory compound(s). Water Environ. Res., 82, 524 (2010).

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Optimization of Biological Nitrogen Removal over Nitrite in the Presence of Lipid Matter by Regulation of Operational Modes

Erdirençelebi

Koyuncu²

2018

J. Environ. Eng.

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Ammonia–Nitrogen Removal from Centrate 10 Years of Testing and Operating Experience in New York City

Cited by 7 publications

References 0 publications

Sidestream Treatment of Anaerobically Digested Sludge Centrate Using Activated Sludge and Aerobic Granular Sludge Sequencing Batch Reactors

Sidestream Treatment of Anaerobically Digested Sludge Centrate Using Activated Sludge and Aerobic Granular Sludge Sequencing Batch Reactors

Bioaugmentation to Improve Nitrification in Activated Sludge Treatment

Optimization of Biological Nitrogen Removal over Nitrite in the Presence of Lipid Matter by Regulation of Operational Modes

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