Malferrari Daniele, Brigatti Maria Franca, Laurora Angela, Pini Stefano
Earth Sciences Department, University of Modena and Reggio Emilia, Largo S. Eufemia 19, I-41100 Modena, Italy.
J Hazard Mater. 2009 Jan 30;161(2-3):723-9. doi: 10.1016/j.jhazmat.2008.04.014. Epub 2008 Apr 11.
One of the most critical aspects of the maintenance of canals for water supplying and drainage is the managing of deposited sediments, which must be periodically removed. Deposited sediments, if containing anthropogenic pollutants with a concentration exceeding specific law limits, must be stored as industrial wastes, thus raising additional economic and logistic problems to deal with. Our research considers polluted sediments from an area close to the south side of Po river, in order to characterize heavy metals associated with different mineral species, thus defining effective treatments for their inertization, and suggesting a possible process for their recycle. Our results demonstrate that the composition of these sediments is suitable for the production of tiles and bricks. Several tests were thus performed to optimize sample treatment and other process parameters, finally giving very encouraging results. Releasing tests on fired products reveal that all the heavy metals are well retained.
供水和排水渠道维护的最关键方面之一是管理沉积的沉积物，必须定期清除这些沉积物。如果沉积的沉积物含有浓度超过特定法律限制的人为污染物，则必须作为工业废物储存，从而带来额外的经济和物流问题需要处理。我们的研究考虑了波河南岸附近地区的污染沉积物，以表征与不同矿物种类相关的重金属，从而确定有效的固化处理方法，并提出一种可能的回收工艺。我们的结果表明，这些沉积物的成分适合生产瓷砖和砖块。因此进行了几次测试以优化样品处理和其他工艺参数，最终得到了非常令人鼓舞的结果。对烧制产品的释放测试表明，所有重金属都得到了很好的保留。
