An agricultural land was adversely affected by salt released by the oil and gas industry. Remediation was needed to recover the land to agricultural productivity. Field-scale and laboratory-scale experiments were conducted to identify a practical and reliable remediation technique that could be used to treat the salt-contaminated farmland. Different approaches, including leaching and drainage interventions, gypsum application, zeolite application, alluing or ripping, sanding and combinations of these approaches, were tested to evaluate the removal of sodium and chloride from salt-affected soils. Electrical conductivity (EC), sodium adsorption ratio (SAR) and remediation time were three important diagnostic parameters in the evaluation. It was found that the integrated application of alluing, gypsum addition and leaching achieved the best remediation for the fine textured soil containing a high concentration of sodium and chloride. Chemical amendments must be applied prior to leaching when treating severely sodic soils.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:AEU.10048/712 |
| Date | 11 1900 |
| Creators | Guo, Ying |
| Contributors | Selma E. Guigard (Department of Civil and Environmental Engineering), Selma E. Guigard (Department of Civil and Environmental Engineering), Tong Yu (Department of Civil and Environmental Engineering), Tariq Siddique (Department of Renewable Resources) |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Format | 2342741 bytes, application/pdf |
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