4. OdorIn addition to odors that emanate from the stack because of poor combustion, there are odors in the pit and in the residue handling area, particularly if water is used for quenching and sluicing the grate siftings. Odors may also emanate from the residue disposal landfill. The odors from the stack can be best controlled by ensuring complete combustion of the gases. This is done by proper air distribution, elevated temperatures, and proper residence time at these temperatures. Such control is much more effective and less costly than using equipment such as scrubbers for odor removal.
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