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首页> 外文期刊>International Journal of Soil, Sediment and Water >Chemical-Physical Treatments Of Marine Contaminated Sediments – A Comparison
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Chemical-Physical Treatments Of Marine Contaminated Sediments – A Comparison

机译：海洋污染沉积物的化学物理处理－比较

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Managing of sediments coming from dredging operations in ports, harbor areas and navigation waterways has to deal with huge quantities of highly contaminated material. As a matter of fact, due to routine operations, to the need of deepening fairways and ports and, eventually, to remediation activities, every year more than 200·106 m3 of dredged materials are produced throughout Europe. Chemical-physical treatments are generally used in order to separate a contaminated fraction from a clean one in order to reduce the quantity of sediments to be disposed of. Within this research work, carried out by the Department of Chemical Material Environment Engineering of Sapienza University of Rome and ISPRA (High Institute for Environmental Protection and Research), former ICRAM, sediments coming from a harbor area characterized by metal contamination have been treated adopting three different technologies: sieving, hydro-cycloning and flotation. Results show that sieving, hydro-cycloning and flotation are able to separate products in which metal contaminants generally present lower concentration compared to that of untreated dredged sediments. Nevertheless, in order to further reduce metal content in the cleaned fraction, the examined treatment cannot stand alone as a single step, but a multi steps or a combination of treatments have to be considered.
机译：港口，港口地区和航道疏dr作业产生的沉积物的管理必须处理大量的高度污染物质。实际上，由于日常操作，对航道和港口的加深需求以及最终的整治活动，整个欧洲每年生产超过200·106 m3的疏materials材料。通常使用化学物理处理，以便将污染部​​分与干净部分分离，以减少要处置的沉积物数量。在这项研究工作中，由罗马的萨皮恩扎大学化学材料环境工程学系和ISPRA（环境保护与研究高级研究所）（原ICRAM）进行了研究，对来自港口的以金属污染为特征的沉积物进行了三种处理不同的技术：筛分，水力旋流和浮选。结果表明，与未经处理的疏ning沉积物相比，筛分，水力旋流和浮选能够分离产物，其中金属污染物的浓度通常较低。然而，为了进一步减少净化后的馏分中的金属含量，所检验的处理不能单独作为一个步骤，而是必须考虑多个步骤或组合处理。

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