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Effect of COD/N ratio on cultivation of aerobic granular sludge in a pilot-scale sequencing batch reactor.
Appl Microbiol Biotechnol. 2013 Feb; 97(4):1745-53.AM

Abstract

Aerobic granular sludge was successfully cultivated with the effluent of internal circulation reactor in a pilot-scale sequencing batch reactor (SBR). Soy protein wastewater was used as an external carbon source for altering the influent chemical oxygen demand/nitrogen (COD/N) ratios of SBR. Initially, the phenomenon of partial nitrification was observed and depressed by increasing the influent COD/N ratios from 3.32 to 7.24 mg/mg. After 90 days of aerobic granulation, the mixed liquor suspended solids concentration of the reactor increased from 2.80 to 7.02 g/L, while the sludge volumetric index decreased from 105.51 to 42.99 mL/g. The diameters of mature aerobic granules vary in the range of 1.2 to 2.0 mm. The reactor showed excellent removal performances for COD and N₄⁺--N after aerobic granulation, and average removal efficiencies were over 93% and 98%, respectively. The result of this study could provide further information on the development of aerobic granule-based system for full-scale applications.

Authors+Show Affiliations

School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, People's Republic of China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22526775

Citation

Wei, Dong, et al. "Effect of COD/N Ratio On Cultivation of Aerobic Granular Sludge in a Pilot-scale Sequencing Batch Reactor." Applied Microbiology and Biotechnology, vol. 97, no. 4, 2013, pp. 1745-53.
Wei D, Qiao Z, Zhang Y, et al. Effect of COD/N ratio on cultivation of aerobic granular sludge in a pilot-scale sequencing batch reactor. Appl Microbiol Biotechnol. 2013;97(4):1745-53.
Wei, D., Qiao, Z., Zhang, Y., Hao, L., Si, W., Du, B., & Wei, Q. (2013). Effect of COD/N ratio on cultivation of aerobic granular sludge in a pilot-scale sequencing batch reactor. Applied Microbiology and Biotechnology, 97(4), 1745-53. https://doi.org/10.1007/s00253-012-3991-6
Wei D, et al. Effect of COD/N Ratio On Cultivation of Aerobic Granular Sludge in a Pilot-scale Sequencing Batch Reactor. Appl Microbiol Biotechnol. 2013;97(4):1745-53. PubMed PMID: 22526775.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of COD/N ratio on cultivation of aerobic granular sludge in a pilot-scale sequencing batch reactor. AU - Wei,Dong, AU - Qiao,Zhuangming, AU - Zhang,Yongfang, AU - Hao,Lianjie, AU - Si,Wei, AU - Du,Bin, AU - Wei,Qin, Y1 - 2012/04/12/ PY - 2011/12/20/received PY - 2012/02/21/accepted PY - 2012/02/18/revised PY - 2012/4/25/entrez PY - 2012/4/25/pubmed PY - 2013/7/11/medline SP - 1745 EP - 53 JF - Applied microbiology and biotechnology JO - Appl. Microbiol. Biotechnol. VL - 97 IS - 4 N2 - Aerobic granular sludge was successfully cultivated with the effluent of internal circulation reactor in a pilot-scale sequencing batch reactor (SBR). Soy protein wastewater was used as an external carbon source for altering the influent chemical oxygen demand/nitrogen (COD/N) ratios of SBR. Initially, the phenomenon of partial nitrification was observed and depressed by increasing the influent COD/N ratios from 3.32 to 7.24 mg/mg. After 90 days of aerobic granulation, the mixed liquor suspended solids concentration of the reactor increased from 2.80 to 7.02 g/L, while the sludge volumetric index decreased from 105.51 to 42.99 mL/g. The diameters of mature aerobic granules vary in the range of 1.2 to 2.0 mm. The reactor showed excellent removal performances for COD and N₄⁺--N after aerobic granulation, and average removal efficiencies were over 93% and 98%, respectively. The result of this study could provide further information on the development of aerobic granule-based system for full-scale applications. SN - 1432-0614 UR - https://www.unboundmedicine.com/medline/citation/22526775/Effect_of_COD/N_ratio_on_cultivation_of_aerobic_granular_sludge_in_a_pilot_scale_sequencing_batch_reactor_ L2 - https://dx.doi.org/10.1007/s00253-012-3991-6 DB - PRIME DP - Unbound Medicine ER -