Abstract: The oily sludge of tank was treated by chemical agent in this paper, and eight chemicals (dodecyl benzene sulfonic acid sodium, sodium dodecyl sulfate, composite anionic surfactant, sodium metasilicate, sodium carbonate, polyaluminium chloride, aluminum sulfate and polyacrylamide) were screened out. The results showed that the oil removal rate of dodecyl benzene sulfonic acid sodium and sodium dodecyl sulfate (surface active agent) was 68.8% and 63.5%, respectively; the oil removal rate of sodium carbonate (dispersing agent) was 75.9%; the oil removal rate of polyaluminium chloride and polyacrylamide flocculating agent was similar. According to experimental results, the mixing experiment was carried out with the five chemicals. The experimental results indicated that the oil removal rate reached 97.3%, when the complex agent was used with volume rate of dodecyl benzene sulfonic acid sodium（4 g/L）, sodium carbonate（1 g/L） and polyacrylamide（30 mg/L） of 1∶2∶1.

Key words: Oil removal rate,    ,  Surfactant,    ,  Dispersant,    ,  Flocculant,   ,  Mixed experiment

摘要： 以某油田罐底泥为研究对象, 采用化学药剂对含油污泥进行除油处理。单因素考察十二烷基苯磺酸 钠、 十二烷基硫酸钠、 市售复合阴离子表面活性剂、 硅酸钠、 碳酸钠、 聚合氯化铝、 硫酸铝和聚丙烯酰胺的除油率。结 果表明, 阴离子表面活性剂中十二烷基苯磺酸钠、 十二烷基硫酸钠对该含油污泥的除油率能够达到6 8. 8%和6 3. 5%; 分散剂碳酸钠除油率能够达到7 5. 9%; 聚合氯化铝和聚丙烯酰胺絮凝剂的除油效果差别不大。随后将筛选出的5种 药剂进行复配实验, 结果表明十二烷基苯磺酸钠( 4g / L) 、 碳酸钠( 1g / L) 、 聚丙烯酰胺( 3 0m g / L) 的体积比为1∶2∶ 1时, 除油率能够达到9 7. 3%。

关键词: 除油率, 表面活性剂,  , 分散剂, 絮凝剂, 复配