使用性活性渣稳定和固化污染的泥沙,使用性活性渣
Alireza Komaei1, Ali Noorzad1, Pooria Ghadir2
1Department of Civil Engineering, Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran.
Journal of environmental management
|June 21, 2023
概括
性活性废渣有效地固定污染土壤中的,显著减少出并增加土壤强度. 这种可持续的方法为土壤整治和减少废物提供了一个环保的解决方案.
科学领域:
- 环境科学 环境科学
- 地质技术工程 地质技术工程
- 材料科学 材料科学 材料科学
背景情况:
- 土壤中污染对环境和公共卫生构成重大风险.
- 稳定和固化是固定污染物的常见修复技术.
- 性活性废渣为传统结合剂提供了潜在的可持续替代品.
研究的目的:
- 为了研究性活性渣对稳定和固化污染的土壤的有效性.
- 评估各种因素对被处理的土壤强度和浸性的影响.
- 阐明负责固定的微观结构机制.
主要方法:
- 有毒特征泄漏程序 (TCLP) 用于泄漏性评估.
- 不受限制的压力强度 (UCS) 测试机械性能.
- 场发射扫描电子显微镜 (FE-SEM),能量散射X射线光谱 (EDS) 和X射线衍射 (XRD) 用于微观结构分析.
主要成果:
- 经过28天的固化后,20%的渣渣含量减少了92%的化,并将UCS增加到19MPa.
- 阿尔比特,阿诺提特晶体和 (N,C) -A-S-H和C-S-H凝的形成有助于提高强度和降低透性.
- 优化的粘合剂含量,固化条件和激活剂比率提高了稳定性能.
结论:
- 性活性渣是一种有效和环保的方法,用于污染土壤的整治.
- 这种方法通过利用工业副产品和减少废物提供了一个可持续的解决方案.
- 该研究表明,土壤强度和污染物固定性得到了显著改善,突出显示了其大规模应用的潜力.
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