Removal of organics and nutrients from food wastewater using combined thermophilic two-phase anaerobic digestion and shortcut biological nitrogen removal

Cui, Fenghao; Lee, Seungho; Kim, Moonil

doi:10.1016/j.watres.2011.07.030

Cited by 43 publications

(16 citation statements)

References 24 publications

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“…However, systems that use a suspended biomass have several shortcomings such as large reactor volume requirement, long solid/liquid separation time and low biomass retention. Furthermore, the process efficiency can be limited by the demanding enrichment and maintenance of nitrifying biomass (Okabe et al, 2011;Van Hulle et al, 2010;Cui et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Experimentation and mathematical models for partial nitrification in aerobic granular sludge process

Cui

Park

et al. 2016

KSCE J Civ Eng

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In this study, the characteristics partial nitrifying biomass in the Sequencing Batch Reactor (SBR) for aerobic granulation was investigated based on experiments and simulation modeling. The reactor operation was carried out at high concentration of ammonium (200~850 mg N/L) which favored Ammonia-Oxidizing Bacteria (AOB) growth over Nitrite-Oxidizing Bacteria (NOB) growth. In partial nitrifying granulation, both Free Ammonia (FA) and Free Nitrous Acid (FNA) simultaneously influenced the activity of NOB much more than that of AOB. According to the simulation results, thE Dissolved Oxygen (DO) concentration and oxygen affinity affect the growth competition and can influence the species that are predominant in the reactor. Both AOB and NOB can have growth potential under toxicants (FA and FNA) inhibition and limited oxygen condition. The AOB growth forms inner part of granule's biofilm, but the NOB growth does not engage in the formation of granules.

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Section: Introductionmentioning

confidence: 99%

Experimentation and mathematical models for partial nitrification in aerobic granular sludge process

Cui

Park

et al. 2016

KSCE J Civ Eng

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“…Through the settling tank, suspended solids were captured to produce clear effluent and to provide concentrated sludge underflow for recycling and wasting. More details for SBNR operation can be found from the published work (Cui et al, 2011).…”

Section: Sbnr Processmentioning

confidence: 99%

“…This method saves organic energy up to 40% of COD in denitrification process and gives lower exploitation cost with lower oxygen demand of about 25% (Surmacz-gorska et al, 1997). In the case study of combined anaerobic digestion and SBNR, the system met the removal of high-strength ammonium even without the need for additional carbon sources and alkalinity because the anaerobic digester effluent included high strength organic matter and alkalinity (Cui et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Comparative study on SBNR, GSBR and Anammox for combined treatment of anaerobic digester effluent

Cui

Park

et al. 2015

KSCE J Civ Eng

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In this study Shortcut Biological Nitrogen Removal (SBNR), Granular Sequencing Batch Reactor (GSBR), and anaerobic ammonium oxidation (Anammox) were comparatively discussed for combined treatment of anaerobic digester effluent. The experiments were carried out through operating pilot and lab scale reactors. These processes have common ground that biologically removes high strength ammonium and they are cost effective and energy efficient. The SBNR process could remove significant nitrogen from anaerobic digestion effluent without supplementation with additional carbon and alkalinity at a low C/N ratio. The aerobic granular sludge which was generated by the GSBR process demonstrated an effective simultaneous organic and ammonium removal. The Anammox process was successfully started using UASB and SBR. After 100 days, the ammonium removal exponentially increased and finally approached to around 75% in both reactors. However, the high active biomass and the long period, which are needed to start up Anammox process, limited the application of this process.

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“…Most often dedicated processes such as nitrifi cation/denitrifi cation, Anammox, Cannon, DEAMOX, NOx processes have been tried. A process called Short Biological Nitrogen Removal (SBNR), being a modifi cation of the Anammox technology, seems to be very interesting [7]. A new approach to anaerobic/aerobic sludge digestion treatment was presented by Novak et al [19].…”

Section: Ammonia Nitrogen Removalmentioning

confidence: 99%

Nitrogen in the Process of Waste Activated Sludge Anaerobic Digestion

Suschka¹,

Grűbel²

2014

Archives of Environmental Protection

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Primary or secondary sewage sludge in medium and large WWTP are most often processed by anaerobic digestion, as a method of conditioning, sludge quantity minimization and biogas production. With the aim to achieve the best results of sludge processing several modifi cations of technologies were suggested, investigated and introduced in the full technical scale. Various sludge pretreatment technologies before anaerobic treatment have been widely investigated and partially introduced. Obviously, there are always some limitations and some negative side effects. Selected aspects have been presented and discussed. The problem of nitrogen has been highlighted on the basis of the carried out investigations. The single and two step -mesophilic and thermophilic -anaerobic waste activated sludge digestion processes, preceded by preliminary hydrolysis were investigated. The aim of lab-scale experiments was pre-treatment of the sludge by means of low intensive alkaline and hydrodynamic disintegration. Depending on the pretreatment technologies and the digestion temperature large ammonia concentrations, up to 1800 mg NH 4 /dm 3 have been measured. Return of the sludge liquor to the main sewage treatment line means additional nitrogen removal costs. Possible solutions are discussed.

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Removal of organics and nutrients from food wastewater using combined thermophilic two-phase anaerobic digestion and shortcut biological nitrogen removal

Cited by 43 publications

References 24 publications

Experimentation and mathematical models for partial nitrification in aerobic granular sludge process

Experimentation and mathematical models for partial nitrification in aerobic granular sludge process

Comparative study on SBNR, GSBR and Anammox for combined treatment of anaerobic digester effluent

Nitrogen in the Process of Waste Activated Sludge Anaerobic Digestion

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