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Monitoring of sequencing batch reactor for nitrogen and phosphorus removal using neural networks

Paper ID Volume ID Publish Year Pages File Format Full-Text
4712 239 2007 6 PDF Available
Title
Monitoring of sequencing batch reactor for nitrogen and phosphorus removal using neural networks
Abstract

The information of nutrient dynamics is essential for the precise control of effluent quality discharged from biological wastewater treatment processes. However, these variables can usually be determined with a significant time delay. Although the final effluent quality can be analyzed after this delay, it is often too late to make proper adjustments. In this paper, a neural network approach, a software sensor, was proposed for the real-time estimation of nutrient concentrations and overcoming the problem of delayed measurements. In order to improve the neural network performance, a split network structure applied separately for anaerobic and aerobic conditions was employed with dynamic modeling methods such as auto-regressive with exogenous inputs. The proposed methodology was applied to a bench-scale sequencing batch reactor (SBR) for biological nutrient removal. The extrapolation problem of neural networks was possible to be partially overcome with the aid of multiway principal component analysis because of its ability of detecting of abnormal situations which could generate extrapolation. Real-time estimation of PO43−, NO3− and NH4+ concentrations based on neural network was successfully carried out with the simple on-line information of the SBR system only.

Keywords
Sequencing batch reactor; Neural network; On-line monitoring; Multiway principal component analysis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 35, Issue 3, 1 August 2007, Pages 365–370
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