复合反渗透膜去除模拟放射性废水中铯的实验研究

Experimental Research on Removing Cesium from Simulated Radioactive Wastewater by Composite Reverse Osmosis Membrane

在小型实验装置上,配制模拟放射性废水,采用复合反渗透膜对废水中的铯进行去除实验,研究不同条件下铯的去除效果。结果表明:废水p H、进水压力和回收率等因素会影响反渗透对铯的去除效果,其中p H的影响最为显著。随着进水压力的增大、元件回收率的降低和进水p H的升高,反渗透对铯的去除率提高。通过控制合适的条件,可将反渗透对铯的去除率保持在90%以上。

Experiments of removing cesium from simulated radioactive wastewater by composite reverse osmosis membrane on a pilot reverse osmosis equipment. Cesium rejection performance of reverse osmosis technology under different conditions was researched. Results revealed that cesium rejection ratio would be affected by pH of wastewater, inlet pressure and element recovery. The most important influence factor was pH of wastewater. With the increasing of inlet pressure and pH or the decreasing of recovery, the rejection ratio would be improved. The rejection ratio could be maintained above 90 percent by controlling appropriate conditions.