某型反渗透-连续电除盐设备故障及维护

介绍了某型反渗透-连续电除盐设备的故障诊断及保养维护方法,分析了水流量、脱盐率、压降等因素与设备故障的相互关系,建立了CEDI分系统的故障检修流程,为同类型设备的故障排除、维护管理提供了一定借鉴。     

Effects of the operating parameters on the reverse osmosis-electrodeionization performance in the production of high purity water

An RO-CEDI (Reverse osmosis-continuous electrodeionization) hybrid process was investigated to produce high purity water. The RO system, with an effective membrane area of 1.1 m², was operated using tap water with conductivity of 64 μs·cm⁻¹, and the CEDI system experiments were carried out in a cell-pair stack consisting of 3 compartments. During the parametric study of the RO-CEDI hybrid system, the optimal operating conditions were determined based on the water purity. The electrical resistivity and water dissociation of the ion exchange resins and ion exchange membrane were verified as the key mechanisms of the CEDI system in the water purification. The produced water met the quality requirements as a make-up water in a nuclear power plant with a resistivity of 10–16.7 MΩ·cm.