Results of sludge incineration tests on a demonstrative fluidised bed furnace are reported and discussed. They show that particulate, heavy metals and acidic compounds in the emissions can be easily controlled both when sludge is spiked with chlorinated hydrocarbons up to a chlorine concentration in the feed of 5%, and when the afterburner is switched off. As for organic micropollutants, polynuclear aromatic hydrocarbons (PAH) were much lower than the Italian limits of 10 μg/m3 (no limits are at present considered in the European Directives). Dioxins (PCDDs) and furans (PCDFs) in some tests exceeded the limit of 0.1 ng/m3 (TE) but the concentrations in the fly ashes were much lower, thus evidencing a possible presence of contaminants in gas phase. PAHs and PCDD/PCDFs were not depending on the afterburning operation, the presence of organic chlorine in the feed sludge and the copper addition to sewage sludge.
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Research Article|
July 01 2001
Sludge incineration tests on circulating fluidised bed furnace
V. Lotito;
V. Lotito
1CNR - Istituto di Ricerca sulle Acque, via F. De Blasio 5, 70123 Bari, Italy
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G. Mininni;
G. Mininni
2CNR - Istituto di Ricerca sulle Acque, via Reno 1, 00198 Rome, Italy
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A. C. Di Pinto;
A. C. Di Pinto
2CNR - Istituto di Ricerca sulle Acque, via Reno 1, 00198 Rome, Italy
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L. Spinosa
L. Spinosa
1CNR - Istituto di Ricerca sulle Acque, via F. De Blasio 5, 70123 Bari, Italy
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Water Sci Technol (2001) 44 (2-3): 409–416.
Citation
V. Lotito, G. Mininni, A. C. Di Pinto, L. Spinosa; Sludge incineration tests on circulating fluidised bed furnace. Water Sci Technol 1 July 2001; 44 (2-3): 409–416. doi: https://doi.org/10.2166/wst.2001.0796
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