| Autor: |
Haozhi LIANG, Huan WANG, Junjie ZHANG, Yongyi LIU, Yunhai FANG |
| Jazyk: |
čínština |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Shuiwen dizhi gongcheng dizhi, Vol 50, Iss 5, Pp 212-221 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
1000-3665 |
| DOI: |
10.16030/j.cnki.issn.1000-3665.202301011 |
| Popis: |
Artificial recharge is an effective technology to solve the problem of groundwater over-exploitation. Clogging of porous media is the bottleneck affecting groundwater recharge. Most studies have focused on the clogging of suspended particles. Few studies focus on the effects of heavy metal ions and humus in recharge water on the physical clogging. This study conducts sand column experiment to explore the influence of fulvic acid, Cu(II) and their coexistence on the suspended particles clogging of porous media. Kaolin (SS group), fulvic acid + kaolin (SS+FA group), fulvic acid + Cu(II) + kaolin (SS+FA+Cu group) are added to recharge water, respectively. The results show that (1) the relative hydraulic conductivity (K’) of SS group, SS+FA group and SS+FA+Cu group decrease to 0.233, 0.095 and 0.182, respectively. The K’ of SS group and SS+FA+Cu group in 0−7.50 cm decrease to below 0.28, while the K’ in the bottom layer (7.50−10.50 cm) decrease to about 0.45, which indicates that 0−7.50 cm of the porous media in SS group and SS+FA+Cu group are severely clogged (0 |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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