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Rational basis for optimal design of sequencing batch reactors with multiple anoxic filling for nitrogen removal

Paper ID Volume ID Publish Year Pages File Format Full-Text
36621 45138 2006 8 PDF Available
Title
Rational basis for optimal design of sequencing batch reactors with multiple anoxic filling for nitrogen removal
Abstract

The paper defines the rational framework for understanding the mechanism of nitrogen removal in SBRs with multiple anoxic fill phases. Mass balance between denitrification potential and nitrate nitrogen introduced in each anoxic period sets the basis for optimal design. System evaluation shows that additional anoxic filling primarily avoids oversized reactor volumes as it reduces the internal recycle requirement. Low effluent nitrate levels can be achieved with dual anoxic systems with optimal hydraulic retention times. Higher denitrification potentials obtained by increasing the duration of the total anoxic period within the process phase (higher TDN/TP) can best be utilized by introducing multiple anoxic filling. Such systems may be optimized with an intermittent aeration continuous filling mode, which may be operated either with denitrification potential or available nitrate limitation. Model simulation of SBR behaviour also supports the results of optimal system design derived from process stoichiometry.

Keywords
Activated sludge; Multiple anoxic filling; Nitrogen removal; Pre-denitrification; Sequencing batch reactor
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Rational basis for optimal design of sequencing batch reactors with multiple anoxic filling for nitrogen removal
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 4, April 2006, Pages 901–908
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
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