气田水中汞的赋存形态分析及其脱除方法

发布时间：2018-01-24 08:47

  本文关键词： 纳米复合型材料 单质汞去除 气田污水 吸附脱汞 聚合硅酸铝　出处：《科学技术与工程》2016年34期 　论文类型：期刊论文

【摘要】：目前国内对含汞废水的处理主要采用硫化法-絮凝法,不但造成药剂的浪费及处理不达标,产生的含汞污泥也难以处理,造成二次污染;而且对汞离子去除效果较好。但新疆气田水经分析主要为悬浮汞和单质汞,存在少量离子汞和有机汞。吸附过滤除气田污水中汞的技术是目前最具有应用前景的。以多孔聚酰胺、改性壳聚糖和聚合硅酸铝为原料,制备出具有单质汞优异吸附性能和吸附选择性的纳米复合型材料;并配合适当的装置和工艺处理后气田污水中汞浓度能够稳定在5×10~(-9)(ppb)以下;而且操作简便、处理成本低。
[Abstract]:At present, the main treatment of mercury-containing wastewater in China is vulcanization-flocculation process, which not only results in waste of medicament and substandard treatment, but also makes it difficult to treat mercury-containing sludge, resulting in secondary pollution. But the water of Xinjiang gas field is mainly suspended mercury and elemental mercury. There are a small amount of ionic mercury and organic mercury. The technology of adsorption and filtration of mercury in gas field wastewater is the most promising. Porous polyamide, modified chitosan and polymeric aluminum silicate are used as raw materials. Nano-composite materials with excellent adsorption performance and adsorption selectivity of mercury were prepared. The mercury concentration in the waste water of the gas field can be stabilized below 5 脳 10 ~ (-9) (ppb) after the gas field wastewater is treated with appropriate equipment and process. Moreover, the operation is simple and the processing cost is low.
【作者单位】： 新疆油田公司采气一厂;贵州美瑞特环保科技有限公司;贵州省植物园;中国科学院地球化学研究所;克拉玛依拓源化工有限公司;
【分类号】：X741
【正文快照】： 随着含汞天然气的开发,含汞气田水可能破坏生态环境,危害操作人员健康并影响正常生产[1]。目前国内含汞污水脱汞技术使用最多的是硫化物沉淀法,并辅以絮凝剂增加沉淀物的脱除效果,进而提高汞的去除率[2,3]。但这种方法主要是脱除水中的无机和有机离子汞[1],不适用于单体汞;而，

本文编号：1459640