疏浚的沉积物显示出巨大的增长介质应用潜力;然而,关于它们在废物储存回收中的有益再利用的研究很少。这项研究旨在根据生态标签要求,检查基于水道沉积物(WS)和绿色废物(GW)的三种生长介质的农艺价值和环境影响。为此,在12个月内,通过共同堆肥WS和GWs,以田间试点规模制备了三种生长培养基GW0,GW25和GW50。将样品提交给生态标签分析包。遵循生态标签要求,生长培养基符合标准,如pH值,电导率,微量元素和多环芳烃含量,氯化物,和病原体,尽管它们不符合欧盟Ecolabel繁殖体指南,有机物,和锌含量。根据NFEN12457-2对GW0、GW25和GW50进行的实验室浸出试验结果表明,硫酸盐,可溶性分数超过惰性废物储存的限制。在6个月内进行了中试规模的裂解仪测试,以检查实际现场条件下生长介质中污染物的浸出潜力。包括欧洲生态标签产品。结果表明,Ba,Mo,Sb,Zn,Se,GW0,GW25和GW50中的Sb高于欧洲生态标签中的Sb。As,Cd,Cr,Ni,与其它生长介质相比,F-和F-在商业产品中更可溶。这项研究证明,在废物存储回收的特定领域中重新使用这些生长介质的主要特征正在实现。
Dredged sediments display a great potential for growing media applications; however, there are few studies about their beneficial reuse for the waste storage reclamation. This research study aims at checking the agronomic values and environmental impacts of three growing media based on waterways sediments (WSs) and green waste (GW) according ecolabel requirements. For this purpose, three growing media named GW0, GW25, and GW50 were prepared at field pilot scale by co-composting WS and GWs during 12 months. Samples were submitted to ecolabel analyses package. Following to the ecolabel requirements, the growing media comply with criteria like pH, electrical conductivity, trace elements and polycyclic aromatic hydrocarbon contents, chlorides, and pathogens, whereas they are not in compliance with the EU Ecolabel guidelines for propagules, organic matter, and zinc contents. Results of laboratory leaching tests performed according to NF EN 12457-2 for GW0, GW25, and GW50 have shown that sulfates, soluble fraction exceed limit for inert waste storage. Lysimeter tests at pilot scale were performed during 6 months to check the leaching potential of pollutants from growing media under real field conditions, including a European ecolabel product. Results demonstrate that Ba, Mo, Sb, Zn, Se, and Sb are higher in GW0, GW25, and GW50 than in the European ecolabel. As, Cd, Cr, Ni, and F- are more soluble in the commercial product compared to other growing media. This study allowed to demonstrate that main characteristics are fulfilling for reusing these growing media in the specific field of waste storage reclamation.