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Mercury Output From Garbage IncinerationDirector, Garbage Incineration and Power Heating Plant, City and County of Bamberg, Rheinstr. 6, D-8600 Bamberg, F.R.G. Domestic garbage normally contains 3-4 g Hg tonne-1. Slag and filter dust from garbage incineration contain only small quantities of mercury, which are difficult to leach. About 80-90% of the mercury in the flue gas can be bound in the washings at condensation temperatures of 60-70 °C from a wet scrubber operated at pH 0.5-1.0 in the presence of surplus chloride. In the following neutralization of the flue gas washings with lime c. 30-40% of the mercury can be bound as oxide; the degree of Hg precipitation can be increased to 99% or more by adding small quantities of the precipitating agent trimercapto-s-triazine—TMT 15. The Bamberg Model for controlled depositation of residual materials containing concentrated pollutants consists of mixing the filter dust with neutralization sludge to produce a solid and only slightly permeable product. The usual concentrations of mercury in garbage incineration plants do not present a danger for the operating personnel. The mercury concentration in the residual material and emission is clearly dependent upon the percentage of used batteries, which can account for over 50% of the total mercury.
Key Words: Mercury limits in Germany • waste water • sewage sludge • workplace • emission • incineration • flue gas purification mercury emission • mercury gas • mercury dust • trimercapto-s-triazine/TMT 15 • Bamberg Model • mercury in batteries • mercury in domestic garbage.
Waste Management & Research, Vol. 4, No. 1,
45-56 (1986) This article has been cited by other articles:
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