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Set up and assessment of a control strategy in a SBR in order to enhance nitrogen and phosphorus removal

Paper ID Volume ID Publish Year Pages File Format Full-Text
36050 45119 2001 8 PDF Available
Title
Set up and assessment of a control strategy in a SBR in order to enhance nitrogen and phosphorus removal
Abstract

The simultaneous treatment of nitrogen, carbon and phosphorus in a SBR is made possible by alternating the aerobic, anoxic and anaerobic phases, which requires that the order and duration of the different reaction stages be carefully optimised. The carbon and nitrogen treatment of wastewater effluent was monitored using an instrumented pilot. Monitoring the pH, ORP and OUR has made it possible to distinguish clearly points with different characteristics: termination times of nitrification, carbon oxidation, as well as endogenic and exogenic denitrification. An automated procedure based on the hierarchical detection of these characteristic points and on the combined use of two sensors has led to the optimisation of the duration of the different reaction phases. In this way, a real saving in oxygenation has been achieved, an increase in reactor productivity (in terms of C, N, P removal) and a good adaptation of load variation.

Keywords
Wastewater treatment; SBR; Control; Bioprocess monitoring; Endogenic and exogenic denitrification
First Page Preview
Set up and assessment of a control strategy in a SBR in order to enhance nitrogen and phosphorus removal
Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 9, September 2006, Pages 1994–2001
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering