In the present study a new continuous capacitive deionization system is presented with intermediate bipolar rotating film-electrodes. Due to the applied electric field and the effect of electrostatic shielding, the bipolar electrodes are polarized and adsorb electrostatically counterions at their outer sides. Simultaneously, due to contact and short-circuiting in the middle, the oppositely charged electrode sides are discharged and release the adsorbed counterions. Charging and discharging occur at the same time without any need for rearrangement or electrical connection/disconnection to/from the power source. The cycle is boundlessly repeated and the deionization process continuous. The consumed electrical energy needed for polarization of the electrodes is to a high extent recovered by the simultaneous depolarization. With the new proposed continuous capacitive deionization system, brackish water of various initial concentrations 1–3 g/L NaCl, is separated in a desalinated and a concentrated water stream. The electrical energy consumption is over 60% lower than reported with the prior art capacitive deionization devices. Water recovery 80:20 and simultaneous continuous regeneration of the electrodes are achieved by applying current densities 4.45 to 32.6 A/m² and flow rates 1.5 to 7.5 mL/min.

在本研究中，提出了一种带有中间双极旋转膜电极的新型连续电容去离子系统。由于施加的电场和静电屏蔽的作用，双极电极被极化并在其外侧吸附静电抗衡离子。同时，由于中间的接触和短路，带相反电荷的电极侧被放电并释放吸附的抗衡离子。充电和放电同时发生，无需重新布置或与电源的电气连接/断开。循环无限重复，去离子过程持续进行。电极极化所需的消耗电能可通过同时去极化得到很大程度的恢复。使用新提议的连续电容去离子系统，可以在淡化和浓水流中分离出各种初始浓度为1-3 g / L NaCl的微咸水。与用现有技术的电容去离子装置报道的相比，电能消耗降低了60％以上。通过施加4.45至32.6 A / m的电流密度，可实现80:20的水回收率和电极的同时连续再生²，流速1.5至7.5 mL / min。