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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/4709
Title: Enhanced biological phosphorus removal in aerated stirred tank reactor using aerobic bacterial consortium
Authors: Yadav D.
Pruthi V.
Kumar P.
Published in: Journal of Water Process Engineering
Abstract: Recently, some studies in the field of enhanced biological phosphorus removal (EBPR) have reported that anaerobic zone is not mandatory and EBPR could be accomplished under fully aerobic conditions. This study investigated the EBPR performance of a bacterial consortium in a fully aerobic continuous stirred tank reactor (CSTR) fed with synthetic wastewater containing molasses as the sole carbon source. Total phosphorus (TP) concentration in the feed was varied between 1.4 and 40 mg/L. The results showed that TP removal efficiency was over 90% up to 20 mg/L of influent TP concentration but decreased to 62% and 30% at 30 and 40 mg/L of influent TP concentrations, respectively. TP removal efficiency was affected more by its own concentration in the influent. COD and NH4+-N removal efficiencies largely remained unaffected by different TP concentrations. Further investigations showed that TP was transformed to intracellular storage of polyphosphate (poly-P) with single stage aerobic process. The primarily reason for TP removal was the synergistic activity among the individual strains of phosphate solubilizing and accumulating microbes. Based on tracer studies, dead space in CSTR was found to range from 1.5–2.5%. The flow pattern in the CSTR was classified as completely mixed. © 2016 Elsevier Ltd
Citation: Journal of Water Process Engineering(2016), 13(): 61-69
URI: https://doi.org/10.1016/j.jwpe.2016.08.005
http://repository.iitr.ac.in/handle/123456789/4709
Issue Date: 2016
Publisher: Elsevier Ltd
Keywords: Aerobic process
Bacterial consortium
Continuous stirred tank reactor (CSTR)
Enhanced biological phosphorus removal (EBPR)
Wastewater treatment
ISSN: 22147144
Author Scopus IDs: 57052321700
18837702800
57206834879
Author Affiliations: Yadav, D., Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, 247 667, India
Pruthi, V., Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, 247 667, India
Kumar, P., Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, 247 667, India
Corresponding Author: Yadav, D.; Department of Civil Engineering, Indian Institute of Technology RoorkeeIndia; email: dharmender.iitr11@gmail.com
Appears in Collections:Journal Publications [CE]

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