Management of hydrogen sulphide generation at a Kraft mill effluent plant
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Date
Authors
Rava, Eleonora Maria Elizabeth
Schoeman, J.J. (Jakob Johannes)
Allison, P.J.
Dilsook, V.
Journal Title
Journal ISSN
Volume Title
Publisher
Water Research Council
Abstract
Communities surrounding an integrated Kraft mill noticed odours from the mill’s effluent treatment plant. A project was therefore commissioned by the mill to proactively manage the odours from both the pulp-processing operations and the effluent treatment plant. This project formed part of a co-ordinated study that was implemented by the mill to limit emissions of the total reduced sulphur (TRS) components from the pulp mill operations. It was found that sulphate-reducing bacteria(SRB) converted the sulphates present in the effluent to hydrogen sulphide (H2S) by dissimilatory respiration. The combined use of a nitrate-releasing biomodifier (Bulab® 9518) and an anthraquinone sulphate-reduction inhibitor (Busperse® 2432) was effective in reducing both SRB activity and H2S levels. The average aqueous H2S levels (40 mg/ℓ) were reduced to between 92% and 99%.
Description
Keywords
Biomodifiers, Hydrogen sulphide, Kraft mill effluent plant, Sulphate-reducing bacteria (SRB), Anthraquinone, Sulphate reduction inhibition, Sodium nitrate
Sustainable Development Goals
Citation
Rava, E, Schoeman, JJ, Allison, PJ & Dilsook, V 2008, 'Management of hydrogen sulphide generation at a Kraft mill effluent plant', Water SA, vol. 34, no. 2, pp. 245-248. [http://www.wrc.org.za/publications_watersa.htm]