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Impact of carbon to nitrogen ratio on nutrient removal in a liquid–solid circulating fluidized bed bioreactor (LSCFB)

Paper ID Volume ID Publish Year Pages File Format Full-Text
35443 45090 2009 6 PDF Available
Title
Impact of carbon to nitrogen ratio on nutrient removal in a liquid–solid circulating fluidized bed bioreactor (LSCFB)
Abstract

The performance of a liquid–solid circulating fluidized bed bioreactor (LSCFB) with anoxic and aerobic beds and lava rock as a biofilm carrier media was used to investigate the impact of the COD/N ratio on the process performance, with particular focus on total nitrogen removal. Three different COD/N ratios of 10:1, 6:1 and 4:1 were tested at an empty bed contact time of 0.82 h. More than 90% of the influent organic matter was removed throughout the study with 58% removal in the anoxic column in Phase III. Total nitrogen removal efficiencies in Phases I–III were 91%, 82% and 71% and simultaneous nitrification–denitrification (SND) occurred in the aerobic downer. The LSCFB demonstrated tertiary effluent quality at COD/N ratio of 10:1 and 6:1 with soluble biochemical oxygen demand (SBOD) <10 mg l−1 and total nitrogen (TN) <10 mg l−1.

Keywords
Total nitrogen; Simultaneous nitrification–denitrification
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Impact of carbon to nitrogen ratio on nutrient removal in a liquid–solid circulating fluidized bed bioreactor (LSCFB)
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 44, Issue 5, May 2009, Pages 578–583
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us