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首页> 美国政府科技报告 >Testing release from stabilized products of air pollution control residues from municipal solid waste incineration and of lead secondary smelting slag using with different binders.
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Testing release from stabilized products of air pollution control residues from municipal solid waste incineration and of lead secondary smelting slag using with different binders.

机译：测试从使用不同粘合剂的城市固体废物焚烧和铅二次熔炼炉渣的空气污染控制残留物的稳定产品中释放。

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摘要

Leaching properties of wastes do not always meet environmental pollution regulations. One of the measures taken to reduce the release of potentially harmful substances is stabilization with cement and other binders with similar properties. Recent developments in tank leaching tests allow intrinsic parameters to be derived that identify the mechanisms underlying release from solid waste forms. While factors controlling release in the short term have been identified more information is needed on long term release factors. In this study the influence of different binders on the release from stabilized products is evaluated and different test methods are compared. Modelling of the release from stabilized waste was carried out on the data obtained in the leaching test to derive intrinsic leach parameters and to use such parameters to model the release at the long term, since this information can not be obtained directly from laboratory leaching tests of short duration. Geochemical models to evaluate the chemical speciation within the stabilized matrix are applied to understand the mechanisms controlling release both in the laboratory and eventually in the field. The addition of EDTA as a complexing agent for lead and a reducing cement were applied to study the influence of these additives on the release behavior of the contaminants Pb, Cd and As. To verify the leaching behavior from the stabilized products concentration profiles were measured in large specimen (20 cm) after a longer exposure time than applied in the standard tank leaching test. This method has been applied to study the release from stabilized waste in marine environment.

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