最近，一个名为Ionics EDR 2020的新系统被商业化。该系统对废水脱盐有很多好处。本文讨论了电渗析反转法（EDR）在城市污水脱盐中的两个应用，一个在西班牙特内里费，另一个在加利福尼亚州圣地亚哥。Ionics EDR 2020系统已证明其适用于城市污水以及饮用水和工业废水的脱盐。通过使用Mark IV电堆，增加了每级的除盐量，并将直流功耗降至最低。 通过使用变频驱动器，泵送功率最小化，控制简化。四通阀减少了不合规格的时间，最大限度地提高了水回收率。包括6个参考文献、表格和图表。

A new system, Ionics EDR 2020, was recently commercialized. This system has a number of benefits for desalting wastewaters. This paper discusses two applications of desalting municipal effluent with electrodialysis reversal (EDR), one in Tenerife, Spain, and one in San Diego, California. The Ionics EDR 2020 system has demonstrated its applicability to desalting municipal effluent as well as potable and industrial wastewaters. The salt removal per stage is increased and the DC power consumption is minimized by use of the Mark IV stack. The pumping power is minimized and control is simplified by use of variable frequency drives. The 4-way valve reduces off-spec time and maximizes water recovery. Includes 6 references, tables, figure.