电渗析反转（EDR）工艺的能力正在帮助许多城市和工业用户进行海水淡化应用，在这些应用中，高水回收率对资源节约和成本控制非常重要。特定应用的最大水回收率取决于多种因素。在大多数应用中，水的回收率受到精矿中沉淀水垢的可能性的限制。EDR能够在精矿中结垢盐的高过饱和度下运行，且不受二氧化硅的影响。这意味着高水回收能力。这就是EDR满足用户需求的原因。本文讨论了EDR废水的来源；高水回收装置的一些例子；集中缩放限制；碳酸钙； 硫酸钙；硫酸钡；硫酸锶；氟化钙；还有二氧化硅。

The capabilities of the electrodialysis reversal (EDR) process are helping many municipal and industrial users in desalination applications where high water recovery is important for resource conservation and cost control. The maximum water recovery for a particular application depends on a variety of factors. in most applications the water recovery is limited by the potential for scales to precipitate from the concentrate. EDR has the ability to operate at high supersaturations of scale-forming salts in the concentrate and is unaffected by silica. This translates to a high water recovery capability. These are the reasons EDR is meeting the needs of users. This paper discusses the source of EDR wastewater; some examples of high water recovery installations; concentrate scaling limits; calcium carbonate; calcium sulfate; barium sulfate; strontium sulfate; calcium fluoride; and silica.