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Bio-augmentation as a tool for improving the modified sequencing batch biofilm reactor

Paper ID Volume ID Publish Year Pages File Format Full-Text
20651 43184 2014 6 PDF Available
Title
Bio-augmentation as a tool for improving the modified sequencing batch biofilm reactor
Abstract

Biological treatment of domestic sewage was accomplished in a pilot-scale modified sequencing batch biofilm reactor (SBBR) bio-augmented with consortium of 5 strains of indigenous bacteria (genus Pseudomonas and Bacillus). The reactor consisted of fibrous filler in the upper and ceramsite filter media in the bottom. It demonstrated to have a short hydraulic residence time (HRT) for 10 h and good quality effluent to cope with low C/N ratio domestic wastewater. The biofilm attached fibrous fillers mainly contributed to contaminants removal. Bio-augmentation dramatically enhanced the removal efficiency of chemical oxygen demand (COD), total phosphorus (TP), and especially total nitrogen (TN), which increased respectively from 80.3%, 58.1% and 41.3% to 83.7%, 67.8% and 58.7%. Polymerase chain reaction (PCR)-denaturing gradient gel electrophoresis (DGGE) technique indicated the 5 strains' survival in the reactor and that Bacillus cereus strain ZQN2 was the most dominant bacteria.

Keywords
Modified sequencing batch biofilm reactor; Bio-augmentation; Domestic sewage; Nitrogen removal; Denaturing gradient gel electrophoresis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Bioscience and Bioengineering - Volume 117, Issue 6, June 2014, Pages 763–768
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