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首页> 外文学位 >Assessment of soil capping for phosphogypsum stack reclamation at Fort Saskatchewan, Alberta.
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Assessment of soil capping for phosphogypsum stack reclamation at Fort Saskatchewan, Alberta.

机译：在艾伯塔省萨斯喀彻温堡进行磷石膏烟囱填海的土壤覆盖评估。

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Phosphogypsum (PG), an acidic byproduct of phosphoric acid production during phosphate fertilizer manufacturing, is commonly stacked on the facilities and capped with soil at decommissioning. The research evaluated soil capping depth (0, 8, 15, 30, 46, 91 cm) effects on response of five seeded grasses, water movement across the soil/PG interface, leaching, radon gas, gamma radiation and hydrogen fluoride emissions. Vegetation response was not affected by cap depth and plant rooting into PG had no detected adverse effects. Soil water fluctuated more at shallow (0, 8, 15) than thick (30, 46, 91) caps, and water quality on caps ≤30 cm was not affected by cap depth. Increased cap depth was associated with decreased gamma radiation, while radon gas and hydrogen fluoride emissions had variable responses. Implementation of these findings into a reclamation program in Alberta will be useful for designing a suitable and cost effective cover system.
机译：磷石膏（PG）是磷肥生产过程中生产磷酸的酸性副产品，通常堆放在设施上，在退役时用土壤覆盖。该研究评估了土壤封盖深度（0、8、15、30、46、91 cm）对五种播种草的响应，水在土壤/ PG界面上的流动，浸出，ra气，γ辐射和氟化氢排放的影响。植被响应不受帽盖深度的影响，植根于PG的植株也未发现不利影响。浅层（0、8、15）的土壤水分波动大于厚层（30、46、91），并且≤30cm的土壤水质不受层深的影响。帽盖深度的增加与伽马射线的减少有关，而ra气和氟化氢的排放具有可变的响应。将这些调查结果实施到艾伯塔省的填海计划中将对设计合适且具有成本效益的掩护系统很有用。

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