迄今为止，全世界已有40多个电渗析逆转（EDR）系统在处理地表水和废水。五个地表水和三个废水处理设施的生产能力超过1 mgd。预处理的范围从氯化的简单接触过滤到石灰软化的澄清和过滤。由于胶状细菌、有机物、金属或聚合物污染，这些工厂中没有一家必须更换阳离子或丙烯酸阴离子膜。此外，由于氧化消毒剂的攻击，没有工厂需要更换膜。虽然在发生严重的预处理问题时，一些工厂需要拆卸和清洗以清除沉积物，但其中许多工厂从未以这种方式进行过清洗。这就是EDR作为一种在表面和废水中工作的膜工艺而享有声誉的原因。

To date, over 40 electrodialysis reversal (EDR) systems are treating surface and wastewaters around the world. Five surface water and three wastewater facilities have production capacities in excess of 1 mgd. Pretreatments range from simple contact filtration with chlorination to clarification and filtration with lime softening. Not one of these plants has had to replace cation or acrylic anion membranes as a result of colloidal bacterial, organic, metals or polymer fouling. In addition, no plant has required membrane replacements due to attack by oxidizing disinfectants. While a few plants have required disassembly and washing to remove deposits when serious pretreatment problems have occurred, many of these plants have never been cleaned in this manner. These are the reasons EDR has a reputation as a membrane process that works on surface and wastewaters.