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Integration of nitrification and denitrifying dephosphatation in airlift loop sequencing batch biofilm reactor

Paper ID Volume ID Publish Year Pages File Format Full-Text
36381 45131 2006 10 PDF Available
Title
Integration of nitrification and denitrifying dephosphatation in airlift loop sequencing batch biofilm reactor
Abstract

The paper described a laboratory scale experiment using an airlift loop sequencing batch biofilm reactor (SBBR) to enhance biological nitrogen and phosphorus removal by integrating nitrification and denitrifying dephosphatation. In the reactor, fibrous carriers were packed in aeration zone and reverse flow zone for the attached growth of nitrifiers and denitrifying polyphosphate accumulating organisms (DNPAOs), respectively. After periodically operating the reactor for 234 days with synthetic wastewater, optimal operation conditions were established to obtain stable and highest removal rates of COD, NH4+–N, and PO43−–P. Adequate cycle and phase duration, packing density were established and organic load were obtained for optimal operation. Under optimal conditions, the mean concentrations of influent were about 309.8 ± 8.7 mg COD/l, 116.0 ± 11.3 mg N/l and 10.5 ± 0.4 mg P/l and the removal efficiencies of them were about 95.3 ± 3.3%, 94.6 ± 4.1% and 73.1 ± 8.3%, respectively.

Keywords
Biological nitrogen removal; Biological phosphorus removal; Nitrification; denitrifying dephosphatation; Airlift loop; Sequencing batch biofilm reactor
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 3, March 2006, Pages 599–608
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
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Full-text PDF Download
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Any Questions? feel free to contact us