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首页> 外文会议>Application and sustainability of technologies >In SituRemediation of Heavy Metal Contaminated Soil or RockFormations by Directed and Controlled Crystallisation of NaturalOccurring Minerals
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In SituRemediation of Heavy Metal Contaminated Soil or RockFormations by Directed and Controlled Crystallisation of NaturalOccurring Minerals

机译：通过天然矿物质的定向和控制结晶原位修复重金属污染的土壤或岩层

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Based on the idea to copy crystallisation and precipitation phenomenarnoccurring in nature, a new technology was developed allowing thernpreparation of metastable, mineral forming solutions. If these solutionsrnare brought into soil or rock formations, directed precipitation of slightlyrnsoluble minerals takes place. Immobilisation of dissolved heavy metals asrnwell as overlaying of reactive mineral surfaces with insoluble mineralsrncan be achieved. It is possible to prepare solutions leading to thernformation of gypsum, BaSO4, CaCO3, Ca(OH)2, Al(OH)3 or Fe(OH)3.rnThe successful large-scale application of BaSO4 forming solutions wasrndemonstrated in the former uranium mine Koenigstein of Wismut GmbH,rn(Germany).
机译：基于复制自然发生的结晶和沉淀现象的想法，开发了一种新技术，可以制备亚稳态的矿物形成溶液。如果将这些溶液带入土壤或岩层，则会发生微溶性矿物的定向沉淀。可以实现溶解性重金属的固溶化以及反应性矿物表面与不溶性矿物的覆盖。可以制备导致石膏，BaSO4，CaCO3，Ca（OH）2，Al（OH）3或Fe（OH）3变形的溶液。在前铀矿中成功演示了BaSO4形成溶液的成功大规模应用。 Wismut GmbH，rn（德国）的Koenigstein。

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