Conditions affecting the applicability of the percolation leaching test in waste management
conference paper
The European up-flow percolation leaching tests CEN/TS 14405 which has been incorporated into both EU and national regulatory waste management frameworks is carried out on granular waste materials and aggregates under conditions intended to ensure (near) local equilibrium conditions in the test and thus prevent conditionality, optimise reproducibility and provide applicable reference results that can be used as the basis for source terms in impact assessments. The need to achieve local equilibrium and the associated test requirements on particle size and flow rate have been challenged, but the test results presented in this paper on BOF steel slag, which is relatively dense, strongly indicate that they are necessary in order to obtain consistent test results. A test programme is being prepared to assess the proportion of fine particles (< 4 mm) required in a sample of granular materials to ensure fulfilment of the (near) local equilibrium assumption at the existing standard flow rate of 15 cm/day and possibly at faster flow rates.
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TNO Identifier
848541
Publisher
ECN
Collation
9 p.
Place of publication
Petten
Files