Removal of mercury from water in the petroleum industry
Removal of mercury from water in the petroleum industry
复制标题
石油工业水中汞的去除
DOI：
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复制
发表时间：
2014
期刊：
影响因子：
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通讯作者：
Thermochem
中科院分区：
文献类型：
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作者：
D. Gallup;Thermochem
汞以低浓度存在于一些油田产出沃茨和炼油厂废水中，但高于监管排放限值。汞的溶解度取决于元素汞（25°C时约为60 ppb）。如果水被氧化，汞的浓度会超过元素汞溶解度的预测值，因为会形成离子物质。采出水、炼油厂废水和乙二醇溶液中的汞可通过吸附、过滤和沉淀过程去除至痕量浓度。提供了石油工业沃茨中汞去除的研究结果。在排放到环境中之前将汞从水中去除可降低汞污染和生物甲基化的风险。
Mercury is present in some oilfield produced waters and refinery wastewater at low concentrations, but above regulatory discharge limits. The solubility of mercury is governed by elemental mercury (~60 ppb at 25°C). If water is oxidized, the concentration of mercury exceeds that predicted for the solubility of elemental mercury due to the formation of ionic species. Mercury in produced water, refinery wastewater and glycol solutions may be removed to trace concentrations by adsorption, filtration and precipitation processes. Results of studies of mercury removal from petroleum industry waters are provided. Removal of mercury from water prior to discharge into the environment reduces the risk of contamination and biotic methylation of mercury.