Abstract
ABSTRACT
Environment Canada, in co-operation with Flakt Canada, conducted a series of comprehensive tests on two pilot-scale air pollution control systems. The tests were designed to determine the capability of these systems to control emissions of dioxin, other trace organics, metals, acid gases, etc. Field testing was completed in August/September 1985 for two different designs: one using a wet-dry scrubber (spray-dryer) plus fabric filter and the other using a dry scrubber plus fabric filter. The systems were constructed by Flakt Canada and were erected adjacent to the mass burning incinerator in Quebec City.
Many different operating conditions were tested to identify optimum removal efficiency for all pollutants of concern. Final results were very significant. Flue gas temperature was found to be an important operating variable for achieving high removal efficiency for many of the pollutants measured. Appropriate operating conditions were Identified to obtain extremely high removal efficiencies for dioxins and furans ( >99%), other trace organics ( >98%), heavy metals, including arsenic and lead ( > 99%), and up to 97% for mercury. Excellent removal ( >95%) was also obtained for acid gases, i.e. HC1 and SO2.
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