微波干燥法处理高浓度废水的机理研究

Study on Mechanism of Nuclear Wastewater Treatment by Microwave Drying in Barrel

通过有限元仿真模型,建立了微波场在反应腔的周期性分布,计算了水对微波功率的吸收率,结果表明吸收率可以达到90%以上。建立了试验装置,探讨了不同功率对干燥效果的影响。研究表明,无法在较高功率的情况下,一次性实现深度干燥。需先较高功率脱水,再通过低功率延长时间处理,可实现废液的深度脱水,从而实现低于1%的要求。

Through the finite element simulation model,the periodic distribution of microwave field in the reaction chamber is established,and the absorption rate of water to microwave power is calculated.The results show that the absorption rate can reach more than 90%.A test device was set up,and the influence of different power on drying effect was discussed.Research shows that deep drying can not be realized at one time under the condition of higher power.It is necessary to dehydrate the waste liquid with high power first,and then extend the treatment time with low power,which can realize the deep dehydration of the waste liquid,thus achieving the requirement of less than 1%.