
1. 江西省科学院能源研究所
2. 华东交通大学土木建筑学院
3. 温室气体核算与碳减排江西省重点实验室
4. 江苏莲洋港环保科技有限公司
Published:2024
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邱霖, 刘勇, 江成, et al. 动态垂直流强化过程中陶粒吸附污染物的特征差异[J]. 2024, 16(4): 109-117+184.
邱霖, 刘勇, 江成, et al. 动态垂直流强化过程中陶粒吸附污染物的特征差异[J]. 2024, 16(4): 109-117+184. DOI: 10.16056/j.2096-7705.2024.04.014.
为评估不同陶粒作为湿地基质的吸附特征差异和应用价值,选择生物陶粒、页岩陶粒为研究对象,通过静态吸附试验和动态垂直流吸附试验,并结合SEM (扫描电镜)、XRD (X射线衍射)和XPS (X射线光电子能谱)等技术,深入探讨吸附性能与机制。结果显示:1) 2种陶粒均有良好的表面结构和丰富的物相组成,表面均富含金属元素,有其良好的吸附性能。2)在静态吸附试验中,2种陶粒的TP (总磷)理论饱和吸附量均达到较高水平,其中生物陶粒更是高达1 156.43 mg/kg。动力学分析进一步揭示了其吸附过程存在多元化途径。同时,2种陶粒的解吸风险小,长期使用不易造成二次污染。3)动态垂直流试验中,陶粒初期对N、P及有机物均有良好的吸附效果,但随着试验的进行,吸附会出现一定程度的吸附疲态,以页岩陶粒最甚。但去除率仍能维持在50%左右,显示出较好的稳定性和去除效果。基于试验结果和机制分析发现,2种陶粒具有良好的湿地基质应用价值,并有助于改善水质中的DOM (溶解性有机质)组分。
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