Since from the economic standpoint, the storage capacity limits no longer allow the deposition of contaminated soils on disposal sites, it has become necessary to develop new methods to dispose of such soils. In future, research work ought to aim at developing techniques for in situ decontamination, and to investigate methods in order to prevent pollutants in the contaminated layers from penetrating into deeper layers, or into the groundwater. In the past, heavy contamination in the Ruhr area was caused by coking plant residues. Such plants produce coke by thermal disintegration of coal, the coke being used for metallurgical working of ore and in foundries. The main residual matters produced during the coking process are ammonia, benzene, and tar. Investigations made to date have shown that contamination occurred in places in depths of up to 10 m.
Weitere Kapitel dieses Buchs durch Wischen aufrufen
- Application Technique for Safe Fixing of Coking Residues on the Basis of a Stabilisation Process According to “Heide-Werner”, and First Results on the Behaviour Regarding Elution
Dr. Ulrich Höfer
- Springer Netherlands
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