Ozonation and thermal pre-treatment of municipal sewage sludge – Implications for toxicity and methane potential
Publication: Research - peer-review › Paper – Annual report year: 2012
The aim of this study was to determine the effects on the methane potential and the overall sludge quality from two different sludge pre-treatment technologies (ozonation high/low dosage and thermal treatment 55/70 °C). In general both treatments gave an increased methane potential. The thermal treatment resulted in higher chemical oxygen demand (COD)-solubilisation, while the highest volatile fatty acids (VFA) increase was obtained with ozonation. The sludges had inhibiting effects in a barley seed germination assay and a yeast oestrogen screen both before and after pre-treatment, but the inhibition was reduced by ozone treatment and digestion. No statistical significant reduction in concentrations of the included pharmaceuticals could be seen.
|Number of pages||8|
|Conference||3rd European Conference on Sludge Management|
|Period||06-09-12 → 07-09-12|
- Sludge, Pre-treatment, Thermal, Ozone, Biogas, Toxicity, Inhibition, Pharmaceuticals
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