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| Emission and control of PCDD/Fs from small-scale garden waste incinerator |
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Abstract Characterization of PCDD/Fs emission from small-scale garden waste incinerator (SGWI) was studied, and the removal efficiencies of PCDD/Fs by air pollution control devices (APCDs) such as bag filter (BF) and activated carbon adsorption column (AC) were investigated. It was found that 2,3,4,7,8-PeCDF was the most abundant congener for PCDD/Fs congeners profiles, and emission feature of PCDD/Fs was similar with municipal solid waste incineration. The average concentration of PCDD/Fs in stack gas from SGMI with wet flue gas desulfurization equipment was 4.89ng I-TEQ/Nm3. It declined to 0.961ng I-TEQ/Nm3 after equipped with bag filter, and reduced to 0.0839ng I-TEQ/Nm3when AC was added as APCDs. Concentrations of PCDD/Fs in flue gas reduced by 91.24% by equipped with BF and AC. So PCDD/Fs in stack gas were effectively removed by using BF and AC jointly to meet the newest standard limit for pollution control on municipal solid waste incinerators in China and the EC emission standard limit of 0.1ng I-TEQ/m3.
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Received: 30 June 2013
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