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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/4708
Title: Enhanced biological phosphorus removal using dried powdered sludge in an aerobic baffled reactor
Authors: Yadav D.
Anand R.S.
Pruthi V.
Kumar P.
Published in: Journal of Environmental Engineering (United States)
Abstract: Enhanced biological phosphorus removal (EBPR) was performed using dried powdered sludge in an aerobic baffled reactor (AeBR) 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 68 and 33% at 30 and 40 mg/L influent TP concentrations, respectively. Chemical oxygen demand (COD) and ammoniacal nitrogen (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 a single-stage aerobic process. The primarily reason for TP removal was the release of extracellular enzymes by microbes due to the addition of dried powdered sludge. Based on tracer studies, dead space in AeBR was found to range from 12.8 to 19.3%. The flow pattern in the AeBR was classified as an intermediate between plug and completely mixed flows. This study could provide an alternative for stable aerobic EBPR. ¬© 2017 American Society of Civil Engineers.
Citation: Journal of Environmental Engineering (United States)(2017), 143(5): -
URI: https://doi.org/10.1061/(ASCE)EE.1943-7870.0001189
http://repository.iitr.ac.in/handle/123456789/4708
Issue Date: 2017
Publisher: American Society of Civil Engineers (ASCE)
Keywords: Aerobic baffled reactor
Dried powdered sludge
Enhanced biological phosphorus removal (EBPR)
Extracellular enzymes
Wastewater treatment
ISSN: 7339372
Author Scopus IDs: 57052321700
57193762533
18837702800
57206834879
Author Affiliations: Yadav, D., Dept. of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Anand, R.S., Dept. of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Pruthi, V., Dept. of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Kumar, P., Dept. of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Corresponding Author: Yadav, D.; Dept. of Civil Engineering, Indian Institute of Technology RoorkeeIndia; email: dharmender.iitr11@gmail.com
Appears in Collections:Journal Publications [CE]

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