摘要
从污染物结构出发，提出了由“污染物解离”和“动力学特性改善”组成的复苏机理。提出的复苏机理认为，树脂复苏效果的好坏，主要取决于４个因素，即污染物结构解离程度；污染物与树脂骨架作用力减弱程度；污染物从树脂骨架迁出程度；交换离子在树脂孔迁移的难易程度。由此讨论了复苏液中ｐＨ、离子强度、表面活性剂、起络合等作用的助剂、共存阴离子、外力作用等因素对复苏效果的影响，并详细论述了这些影响因素的作用机理。提出的复苏机理能较好地解释现有复苏方法和配方的选用原理，并对新复苏方法的建立具有指导意义。
The rejuvenation mechanism, which is composed of“the split of pollutant” and “improvement of resin dynamic property”, of the anion exchanger based on pollutant structure is proposed. The rejuvenation effect of the resin, according to the mechanism, is mainly dependent on four factors, i.e., the splitting extent of the pollutant structure, the extent of reduction in the interaction force between pollutant and resin frame, the ammount of the pollutant migrated from the resin, and the migration rate of the exchanging ions passed through the resin's micro hole. The effects and its mechanism of a number of influencing factors, such as pH of rejuvenation solution, ion strength, surfactant, complexing agent, co existing ions and the action of external force, on rejuvenation result are discussed. The suggested mechanism will well explain the principle of the existing rejuvenation methods and the selection of formula and have guidance for development of new rejuvenation methods.
出处
《华东电力》
1996年第9期16-21,共6页
East China Electric Power
关键词
阴离子交换树脂
发电厂
水处理
anion resins pollutants rejuvenation mechanism dynamic property
