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Ozonation and thermal pre-treatment of municipal sewage sludge-implications for toxicity and methane potential
Umeå University, Faculty of Science and Technology, Department of Chemistry.
2013 (English)In: Journal of residuals science & technology, ISSN 1544-8053, Vol. 10, no 2, 85-91 p.Article in journal (Refereed) Published
Abstract [en]

The aim of this study was to determine effects on methane potential and overall sludge quality from two different sludge pre-treatment technologies (ozonation high/low dosage and thermal treatment 55/70 degrees C). In general both treatments produced increased methane potential. Thermal treatment resulted in higher chemical oxygen demand (COD)-solubilisation, while the highest volatile fatty acids (VFA) increase was obtained with ozonation. Sludges had inhibiting effects in a barley seed germination assay and a yeast oestrogen screen both before and after pre-treatment, but inhibition was reduced by ozone treatment and digestion. No statistical significant reduction in concentrations of included pharmaceuticals could be observed.

Place, publisher, year, edition, pages
2013. Vol. 10, no 2, 85-91 p.
National Category
Chemical Sciences
URN: urn:nbn:se:umu:diva-79282ISI: 000321541500004OAI: diva2:642850
Available from: 2013-08-23 Created: 2013-08-13 Last updated: 2013-08-23Bibliographically approved

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Fick, Jerker
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