Ozonation and Thermal Pre-Treatment of Municipal Sewage Sludge-Implications for Toxicity and Methane Potential

A. Davidsson, Eva Eriksson, J. Fick

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

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.
Original languageEnglish
JournalJournal of Residuals Science & Technology
Volume10
Issue number2
Pages (from-to)85-91
ISSN1544-8053
Publication statusPublished - 2013

Keywords

  • Anaerobic digestion
  • Ozone pretreatment
  • Pharmaceuticals
  • Waste
  • Products
  • Removal

Fingerprint

Dive into the research topics of 'Ozonation and Thermal Pre-Treatment of Municipal Sewage Sludge-Implications for Toxicity and Methane Potential'. Together they form a unique fingerprint.

Cite this