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。
At present, mercury-containing wastewater in China is mainly treated by sulfide method. This tech- nology not only caused waste sludge, which is difficult to deal with, and it is not standard. It is better effect of mer- cury ions removal. But the analysis of Xinjiang gas field wastewater is mainly suspended mercury and elemental mercury, the amount of ions and organic mercury are small. The technology of removing mercury by adsorption from gas field wastewater is the most promising one. Polyamide porous, modification of chitosan and poly aluminum sili- cate as raw material prepared nano composite material with elemental mercury excellent adsorption properties and selectivity, and with the proper equipment and process in gas field sewage, the concentration of mercury can stable below 5ppb, simple and convenient operation, low treatment cost.
作者
张锋
李森
刘涛
张洪杰
唐楚寒
李璐
ZHANG Feng LI Sen LIU Tao ZHANG Hong-jie TANG Chu-han LI Lu(Gas Production Plant of Xinjiang Oilfield Company1 , Kelamayi 834000, P. R. China Guizhou Merit Environmental Technology Co. , Ltd. 2, Guiyang 550001, P. R. China Guizhou Botanical Gardens , Guiyang 550004, P. R, Chin Institute of Geochemistry Chinese Academy of Sciences4 , Guiyang 550081, P. R. China Kelamayi Tuoyuan Chemical Industry Co. , Ltd. 5, Kuitun 834000, P. R. China)
出处
《科学技术与工程》
北大核心
2016年第34期320-324,共5页
Science Technology and Engineering
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
nano composite materials elemental mercury removal gas field wastewater mercury adsorption poly-aluminum silicate
