Heavy Metals From "Energy From Waste" Plants-Comparison of Gas Cleaning Systems

Abstract

Municipal waste incinerators produce more heavy metals calculated per usable energy unit (g MWh^-1 ) than other solid fuel fired plants, e.g. coal, peat and wood waste. This paper presents a comparison of some modern proven gas cleaning methods including an electrostatic precipitator (ESP) followed by a scrubber with condensation or an electrostatic scrubber, and a dry scrubbing systems using slurry injection followed by ESP or powder injection followed by fabric filter. The comparison shows that the system with fabric filter has a lower emission of many heavy metals than the other methods.

Keywords

Waste incineration energy from waste electrostatic precipitator scrubber with condensation electrostatic scrubber dry scrubbing slurry injection powder injection fabric filter mercury cadmium lead.

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