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HOW TO COMBINE CDW-RECOVERY WITH GROUNDWATER PROTECTION



Author(s): Peter Dihlmann
Paper category: Proceedings
Book title: IV International Conference Progress of Recycling in the Built Environment
Editor(s): Isabel M. Martins, Carina Ulsen, Yury Villagran
ISBN:
e-ISBN: 978-2-35158-208-4
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 93-99
Total Pages: 07
Language : English


Abstract: Regarding quality and confidence to the recovery of construction and demolition waste
(CDW), a robust legislation and reasonable standards for the protection of groundwater are
indispensable. In Germany, ready-to-go CDW-recycling-material has to undergo a laboratory
test. According to a draft ordinance a sample of 1 kg of recycling material is being mixed with
2 litres of water for 24 hours. Afterwards the solids are being filtered out and the water is
analysed to check to which extend pollutants (e.g. heavy metals or PAH) have been dissolved.
Such tests are the basis for applied legislation stipulating limit values in mg/l or μg/l. On the
other hand, a draft transposition of the EU Groundwater Directive 2006/118/EC brought into
discussion a cluster of limit values, which are supposed to guarantee that groundwater shall be
potable. However, the result of testing at random fifty ready-to-go CDW samples revealed
that the aforementioned test delivered values, which are in general an order of magnitude
higher than the cluster of discussed groundwater values. If future limit values for CDW were
reduced to the groundwater values, a significant limitation of CDW-recovery could occur.
This paper does not represent the consensual view held by the Baden-Württemberg Ministry
for the Environment, Climate Protection and the Energy Sector.


Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00


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