Aerobic granulation with industrial wastewater in sequencing batch reactors

Arrojo, B.; Mosquera-Corral, Anuska; Garrido, Juan Manuel Méndez; Méndez, R.

doi:10.1016/j.watres.2004.05.002

Cited by 213 publications

(86 citation statements)

References 20 publications

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“…The SBRs were operated in cycles of 3 hours with short settling and effluent withdrawal periods to generate wash-out conditions in order to select for granulation in the reactors [14]. The cycle distribution was chosen with the aim to obtain the granulation process and the organic matter removal, not optimized for nutrients removal.…”

Section: Reactors Operationmentioning

confidence: 99%

Filamentous bacteria existence in aerobic granular reactors

Figueroa

Río

Campos

et al. 2014

Bioprocess Biosyst Eng

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Filamentous bacteria are associated to biomass settling problems in wastewater treatment plants. In systems based on aerobic granular biomass they have been proposed to contribute to the initial biomass aggregation process. However their development on mature aerobic granular systems has not been sufficiently studied. In the present research work filamentous bacteria were studied for the first time after long term operation (up to 300 days) of aerobic granular systems. Chloroflexi and Sphaerotilus natans have been observed in a reactor fed with synthetic wastewater. These filamentous bacteria could only come from the inoculated sludge. Thiothrix and Chloroflexi bacteria were observed in aerobic granular biomass treating wastewater from a fish canning industry. Meganema perideroedes was detected in a reactor treating wastewater from a plant processing marine products. As a conclusion the source of filamentous bacteria in these mature aerobic granular systems fed with industrial effluents was the incoming wastewater.

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Section: Reactors Operationmentioning

confidence: 99%

Filamentous bacteria existence in aerobic granular reactors

Figueroa

Río

Campos

et al. 2014

Bioprocess Biosyst Eng

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show abstract

“…In this sense the study of different types of substrates is important to determine the usefulness of aerobic granulation. Many works have been performed with synthetic [3][4][5] and industrial wastewater [6][7][8][9][10] . The effect of different types of toxic compounds, like phenol and pyridine as well as the presence of heavy metals and dyes have also been tested 11,12 .…”

Section: Introductionmentioning

confidence: 99%

Effect of coagulant‐flocculant reagents on aerobic granular biomass

Río¹,

Morales²,

Figueroa³

et al. 2012

J of Chemical Tech & Biotech

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“…In this study, it was found that the size of the nitrifying granules was increased with the fast loading increasing in the feed, which could be a positive responds of the nitrifying granules to the disadvantageous environment, i.e., the stepwise accumulated FA and FNA in the bulk liquid. The high growth rate of bacterial strains was widely reported to encourage proliferation of microbes, which may cause a rapid increase in size of the granules with a loose structure and low density [30], [31]. In the meantime, the size of the micro-colonies was reported to be able to determine whether fragmentation took place under the shear conditions applied and that whether this shear could erode or further fragmentation [32].…”

Section: Discussionmentioning

confidence: 99%

Formation and Stability of Nitrifying Granules under High Loading Rates

Wang¹,

Chen²,

Nie³

et al. 2016

IPCBEE

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Abstract. Nitrifying granules are generally believed to have high nitrification ability due to the immobilization of large quantities of nitrifying bacteria with low growth rate. However, high loading rate is normally not recommended for nitrifying granules due to the high inhibition statue. In this study, nitrifying granules, able to treat ammonia nitrogen as high as 1000 mg N/L (2 kg N/m 3 ·d), were cultivated in the laboratory scale sequencing batch reactor. During around 200-day operation, the granules exhibited good performance with 99% ammonia removal efficiency. In the meantime, MLSS increased from initial 6 g/L to the final 10 g/L, and the value of SVI 30 decreased from around 100 to 15 ml/g. However, it was observed that the nitrifying granules gradually disintegrated into small aggregates with mean size decreased from 286 to 138 μm from the operation day 50 to 120, after which they gradually recovered by themselves with increased mean size of 235 μm at the end of the operation. Notably, this disintegration did not compromise performance and characteristics of the nitrifying granules. These results demonstrated that nitrifying granules may have the capability to undertake ammonia loading rates as high as 1000 mg N/L with good self-healing ability, which make the process more stable and promising in practice.

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Aerobic granulation with industrial wastewater in sequencing batch reactors

Cited by 213 publications

References 20 publications

Filamentous bacteria existence in aerobic granular reactors

Filamentous bacteria existence in aerobic granular reactors

Effect of coagulant‐flocculant reagents on aerobic granular biomass

Formation and Stability of Nitrifying Granules under High Loading Rates

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