Nitrogen and phosphorus removal from an abattoir wastewater in a SBR with aerobic granular sludge

Cassidy, Daniel P.; Belia, Evangelia

doi:10.1016/j.watres.2005.09.025

Cited by 174 publications

(88 citation statements)

References 32 publications

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“…Freitas studied the effect of short SBR cycles on nutrient removal and found many advantages of short cycles, including increased efficiency of nutrient removal, improved SBR process performance, reduced energy consumption, and increased richness of anaerobic and aerobic microbes (Freitas et al 2009). In a study of nitrogen and phosphorus removal from abattoir wastewater in an SBR with aerobic granular sludge, shorter settlement cycles in the SBR process were found to improve waste removal (Cassidy and Belia 2005). In the present study, Phase 3 coincided with the entry into operation of the reactor and the use of short anoxic/aerobic cycles with a shorter settling time.…”

Section: Removal Of Nitrogen Compoundsmentioning

confidence: 45%

Simultaneous removal of nutrients in a novel anaerobic–anoxic/aerobic sequencing reactor: removal of nutrients in a novel reactor

Azhdarpoor

Mohammadi

Dehghani

2015

Int. J. Environ. Sci. Technol.

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Discharging wastewater contaminated with nitrogen and phosphorus compounds (nutrients) can be harmful to both human health and the environment. The present study investigated the efficiency of removing total nitrogen, total phosphate, and chemical oxygen demand using a novel reactor design. The reactor was an anaerobic-anoxic/aerobic sequencing batch reactor with continuous influent and discontinuous outlet. The operation consisted of four phases. Phases 3 and 4 had mixing cycles, whereas phases 1 and 2 only had aeration, settling, and discharge cycles. Phase 4 was the most effective. The average removal efficiencies for chemical oxygen demand, NH 4? , total nitrogen, and total phosphate in Phase 4 were 92, 91, 86, and 85 %, respectively. This phase comprised 225 min of intermittent aeration time, 165 min of intermittent mixing time, and 90 min of settling and discharge. In addition to high efficiency in nutrient removal, the reactor had other advantages, including continuous flow and performance in all phases.

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Section: Removal Of Nitrogen Compoundsmentioning

confidence: 45%

Simultaneous removal of nutrients in a novel anaerobic–anoxic/aerobic sequencing reactor: removal of nutrients in a novel reactor

Azhdarpoor

Mohammadi

Dehghani

2015

Int. J. Environ. Sci. Technol.

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“…Many of these anaerobic systems use anaerobic granular sludge to perform treatment process (Cassidy and Belia, 2005). Anaerobic granules have a higher density than aerobic flocs, which will allow reactors to have better biomass maintenance and settling features (Van Loosdrecht et al, 1995).…”

Section: Anaerobic Treatment Process Of Wastewatermentioning

confidence: 99%

Evaluation of an Anaerobic Granule Biosensor for Upset Early Warning Detection

Jiang

2008

proc water environ fed

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“…A positive effect of the presence of an anaerobic phase in the GSBR cycle on phosphorus removal has been reported (Cassidy and Belia 2005). The authors noted 98% effectiveness of phosphorus removal in GSBR fed with slaughterhouse wastewater with COD of 7685 mg/L, total Kjeldahl nitrogen of 1057 mg/L, total phosphorus 217 mg/L and VSS of 1520 mg/L.…”

mentioning

confidence: 93%

“…The use of acetic acid for this purpose ensures high phosphate release and binding rates. The researchers in a study in which an anaerobic phase was incorporated in the operational cycle, during which external carbon, in the form of acetate, was added, reported that COD and phosphorus were removed from slaughterhouse wastewater with a 98% effi ciency (Cassidy and Belia 2005). Acetate is also a very good source of carbon for microorganisms conducting heterotrophic denitrifi cation in aerobic granular sludge (Cydzik-Kwiatkowska et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Operation mode and external carbon dose as determining factors in elemental composition and morphology of aerobic granules

Cydzik‐Kwiatkowska

Rusanowska

Głowacka

2016

Archives of Environmental Protection

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Abstract:The elemental composition and morphology of aerobic granules in sequencing batch reactors (GSBRs) treating high-nitrogen digester supernatant was investigated. The investigation particularly focused on the effect of the number of anoxic phases (one vs. two) in the cycle and the dose of external organics loading (450 mg COD/(L·cycle) vs. 540 mg COD/(L·cycle)) on granule characteristics.Granules in all reactors were formed of many single cells of rod and spherical bacteria. Addition of the second anoxic phase in the GSBR cycle resulted in enhanced settling properties of the granules of about 10.6% and at the same time decreased granule diameter of about 19.4%. The study showed that external organics loading was the deciding factor in the elemental composition of biomass. At 540 mg COD/(L·cycle) the granules contained more weight% of C, S and N, suggesting more volatile material in the granule structure. At lower organics loadings granules had the higher diameter of granules which limited the diffusion of oxygen and favored precipitation of mineral compounds in the granule interior. In this biomass higher content of Mg, P and Ca, was observed.

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Nitrogen and phosphorus removal from an abattoir wastewater in a SBR with aerobic granular sludge

Cited by 174 publications

References 32 publications

Simultaneous removal of nutrients in a novel anaerobic–anoxic/aerobic sequencing reactor: removal of nutrients in a novel reactor

Simultaneous removal of nutrients in a novel anaerobic–anoxic/aerobic sequencing reactor: removal of nutrients in a novel reactor

Evaluation of an Anaerobic Granule Biosensor for Upset Early Warning Detection

Operation mode and external carbon dose as determining factors in elemental composition and morphology of aerobic granules

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