Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(1), 85-91 | DOI: 10.11118/actaun201361010085

Sewage sludge as a biomass energy source

Pavel Kolat, Zdeněk Kadlec
Department of Energy, VSB - Technical University of Ostrava, 17. listopadu 15, 708 33 Ostrava, Czech Republic

The major part of the dry matter content of sewage sludge consists of nontoxic organic compounds, in general a combination of primary sludge and secondary microbiological sludge. The sludge also contains a substantive amount of inorganic material and a small amount of toxic components. There are many sludge-management options in which production of energy is one of the key treatment steps. The most important options are anaerobic digestion, co-digestion, incineration in combination with energy recovery and co-incineration in coal-fired power plants. The goal of our applied research is to verify, if the sludge from waste water treatment plants may be used as a biomass energy source in respect of the EU legislation, which would comply with emission limits or the proposal of energy process optimizing the preparation of coal/sludge mixture for combustion in the existing fluid bed boilers in the Czech Republic. The paper discusses the questions of thermal usage of mechanically drained stabilized sewage sludge from the waste water treatment plants in the boiler with circulated fluid layer. The paper describes methods of thermal analysis of coal, sewage sludge and its mixtures, mud transport to the circulating fluidised bed boiler, effects on efficiency, operational reliability of the combustion equipment, emissions and solid combustion residues.

Keywords: sewage sludge, energy, combustion, coal, emission, fluid, boiler
Grants and funding:

The authors would like to express their acknowledgements to the National Program of Research ENET - energy units for utilization of non-traditional energy sources CZ.1.05/2.1.00/03.0069 for the financial support of this work.

Received: October 4, 2012; Published: April 8, 2013  Show citation

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Kolat, P., & Kadlec, Z. (2013). Sewage sludge as a biomass energy source. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 61(1), 85-91. doi: 10.11118/actaun201361010085
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    References

    1. BARTOŇOVÁ, L., KLIKA, Z., KOLAT, P., ROUBÍČEK, V., 2008: Elemental enrichment in unburned carbon during coal combustion in fluidized bed power stations. the effect of the boiler output. Chemical and Process Engineering, Vol. 29, pp. 493-503. ISSN 0208-6425.
    2. BARTOŇOVÁ, L., KOŘISTKOVÁ, M., KLIKA, Z., KOLAT, P., MARTYNKOVÁ, G., 2009: Evaluation of elemental volatility in a fluidized bed power station in term of unburned carbon study. Chemical and Process Engineering, Vol. 30, pp. 495-506. ISSN 0208-6425.
    3. ČECH, B., KADLEC, Z., 2006: Diagnostic Methods of Combustion in the Fluid Bed Boiler. Acta geodynamica et geomaterialia, Vol. 3, No. 1, pp. 13-41. ISSN 1214-9705.
    4. BARTOŇOVÁ, L., KOŘISTKOVÁ, M., KLIKA, Z., KOLAT, P., MARTYNKOVÁ, G., 2010: Comparison of elemental contents in unburned carbon, coal and ash during brown coal combustion in fluidized bed boiler. Transcriptions of the VSB - Technical university of Ostrava, mechanical series, Vol. LVI, No. 1, pp. 1-7. ISSN 1210-0471.
    5. LOO, S., KOPPERJAN, J., 2008: Handbook of Biomass Combustion and Co-firing, (Vol. 2), Earthscan. ISBN 978-1-84407-249-1, London, UK.
    6. SZELIGA, Z., JUCHELKOVA, D., CECH, B., KOLAT, P., WINTER, A., WILTOWSKI, T., 2008: The Potential of Alternative Sorbents for Desulphurization - from Laboratory Tests to the Real Combustion Unit, In: Energy & Fuel, Vol. 22 (5), pp. 3080-3088. ISSN 0887-0624. DOI: 10.1021/ef800218t Go to original source...
    7. WINTER, F., HOFBAUER, H., 1997: Temperatures in a Fuel Particle Burning in a Fluidized Bed: The effect of Drying, Devolatilisation and Char Combustion, In: Combustion and Flame, Vol. 108, pp. 302-314. ISSN 0010-2180. DOI: 10.1016/S0010-2180(96)00140-X Go to original source...

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