Granulation in high-load denitrifying upflow sludge bed (USB) pulsed reactors

Franco, A.; Roca, Enrique; Lema, Juan M.

doi:10.1016/j.watres.2005.11.044

Cited by 95 publications

(25 citation statements)

References 32 publications

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“…It can be concluded that a COD:NO3 --N ratio as low as 3:1 can be used to treat both COD and nitrate with high efficiency. Previous research has shown that a COD:NO3 --N ratio of around 5:1 is required for complete denitrification [20], and our current research reaffirms that a low COD:NO3 --N ratio is insufficient for complete denitrification, but proposes that complete denitrification is possible even at a COD:NO3 --N ratio of 3:1. From the experimental analysis, COD removal is investigated at different COD:NO3 --N ratios.…”

Section: Performance Of Nitrate Reduction In a Novel Fbrsupporting

confidence: 82%

“…The highest performance in term of combined nitrate and COD removal efficiencies was observed at the COD:NO3 --N ratio of 3:1 (lowest COD and nitrate concentration in the effluent). While a previous research found that the appropriate stoichiometric COD:NO3 --N ratio for denitrification should be around 5:1 [20], our research differs from this previous research in that our experimental set-up utilized denitrifying bacteria in biofilm whereas the other research utilized suspended denitrifying bacteria. Another supporting research has found that denitrifying bacteria in biofilm could achieve better nitrate reduction activity than suspended denitrifying bacteria [21].…”

Section: Performance Of Nitrate Reduction In a Novel Fbrmentioning

confidence: 57%

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A Novel Configuration Fluidized Bed Reactor for Nitrate Reduction and Low Strength Anaerobic Wastewater Treatment

Rungkitwatananukul¹,

Puprasert²,

Nomai³

et al. 2018

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Abstract. In this research, hydrodynamic behaviour in a novel fluidized bed reactor (FBR) was studied using a residence time distribution (RTD) experiment. The RTD experimental result showed that the liquid flow pattern closely resembled plug flow behaviour. This research utilized the novel FBR under low hydraulic retention time (HRT) operation (without internal recirculation), and thus the novel FBR's performance should be further investigated. Two wastewater treatment applications were studied in this research. The first application was to use the novel FBR for denitrification at COD:NO3 .

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Section: Performance Of Nitrate Reduction In a Novel Fbrsupporting

confidence: 82%

Section: Performance Of Nitrate Reduction In a Novel Fbrmentioning

confidence: 57%

A Novel Configuration Fluidized Bed Reactor for Nitrate Reduction and Low Strength Anaerobic Wastewater Treatment

Rungkitwatananukul¹,

Puprasert²,

Nomai³

et al. 2018

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show abstract

“…The proteins to polysaccharides ratio (PN/PS) is usually used to evaluate the granular settleability and strength (Quarmby and Forster, 1995;Batstone and Keller, 2001;Franco et al, 2006), where a higher PN/PS ratio of granules indicates lower strength and weaker settleability (Quarmby and Forster, 1995;Batstone and Keller, 2001). The low PN/PS ratio of the anammox granules suggests an excellent granular stability.…”

Section: Sludge Characteristicsmentioning

confidence: 99%

Nitrogen removal performance of a hybrid anammox reactor

Hira

et al. 2011

Bioresource Technology

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“…The bacteria aggregation and settling are actually determined by EPS (28). The substrate limitation and starvation finally resulted in different content and chemical composition of EPS (14).…”

Section: Discussionmentioning

confidence: 99%