Comparison Study of Manometric Respirometric Test  and Common Chemical Methods in the Determination of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mrow><mml:mtext>BOD</mml:mtext></mml:mrow><mml:mtext mathvariant="bold">7</mml:mtext></mml:msub></mml:mrow></mml:math> in a Pulp and Paper Mill's Wastewaters

Roppola, Katri; Kuokkanen, Toivo; Nurmesniemi, Hannu; Rämö, Jaakko; Pöykiö, Risto; Prokkola, Hanna

doi:https://doi.org/10.1155/JAMMC/2006/90384

Journal of Analytical Methods in Chemistry

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Volume 2006 | Article ID 090384 | https://doi.org/10.1155/JAMMC/2006/90384

Comparison Study of Manometric Respirometric Test and Common Chemical Methods in the Determination of BOD7 in a Pulp and Paper Mill's Wastewaters

Katri Roppola,¹Toivo Kuokkanen,¹Hannu Nurmesniemi,²Jaakko Rämö,³Risto Pöykiö,⁴and Hanna Prokkola¹

Received23 Nov 2005

Revised29 Jun 2006

Accepted06 Sept 2006

Published13 Sept 2006

Abstract

The biological oxygen demand (BOD) test is widely used in many wastewater treatment plants. The conventional BOD tests are usually time-consuming and the results are often out of date for process control purposes. The aim of this research was to compare the manometric respirometric test with common chemical methods in the determination of BOD of wastewater from a pulp and paper mills as well as to evaluate the BOD7 values of both wastewaters from the short-term respirometric measurements. The results showed that there were differences in the BOD7 values of paper mill samples measured by conventional and respirometric methods. The main cause was found to be the dilution solution used in the conventional BOD tests. Using the same mineral solution in the respirometric measurements diminished the difference remarkably. Evaluation of the BOD7 value after two or three days incubation was proved to work very well and the estimated results were close to measured values (deviations 1%–12%).

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Copyright

Copyright © 2006 Katri Roppola et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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