摘要
A liquid solid semi-moving bed with non-mechanical particle transport system is proposed and used for fractionation of cesium ion in wastewater. The particle transport system, which consists of a suction chamber, a mixing chamber, a nozzle and a riser tube, is designed to be controlled completely by hydraulic force. Experiments show that continuous feeding and discharging of resin can be realized by the transport system. The removal of cesium ion from wastewater is realized, The concentration of cesium ion in effluent liquid remains below 0,1g·L^-1 （the initial concentration is 5,3g·L^-1） during the 73 hours＇ experiment. The average exchange capacity of resin discharged from the bed is 0.57mmol,（g dry resin）^-1, which is close to the saturated capacity of 0.65mmol·g^-1. And it is also proved that the non-homogeneity of particle vertical velocity along the radial direction can seriously influence the ion-exchange process.
有非机械的粒子运输系统的一张液体固体半动人床被建议并且在废水为铯离子的分别使用了。粒子运输系统，由一个吸房间，一个混合房间，一张嘴和一个起床人试管组成，被设计被水力的力量完全控制。实验证明树脂的连续的喂并且排出能被运输系统认识到。从废水的铯离子的移动被认识到。在自河液体的铯离子的集中在 0.1g · L 下面留下 ? 1 (起始的集中是 5.3g · L ? 1 ) 在 73 小时的实验期间。从床解除的树脂的平均交换能力是 0.57 mmol ·(g 干燥树脂)? 1，它接近 0.65 mmol · g 的浸透的能力 ? 1。并且这也被证明沿着光线的方向的垂直速度能严重影响的粒子的非同质离子交换过程。
基金
the National High Technology Research and Development Program of China(863 Program,No.2004AA518020).
