CAPACITIVE DEIONZATION
Capacitive deionization (CDI) was initially developed in Lawrence Livermore National Lab some 20 years ago. The process was touted as a big breakthrough in desalination technology but somehow the scaleups were not too successful by several vendors. Voltea has the CapDi process which has been commercialized for quite a while but are still limited to relatively small commercial and industrial systems for cooling towers and commercial laundries. At least one firm tried to bring it to municipal water reuse application in a project but were not successful. The CDI process has good potential in certain applications. Basically, if it is a charged species in the water CDI can efficiently knock it down to a target level. It's typically focused on brackish water applications – ~2000 TDS and below. It can go higher, and have, but that's abouth their sweet spot. Typically the approach allows customers to "tune" their water to a precise, desired level and proprietary software dynamically adjusts to changes in feedwater.
In order to obtain more information and/or request courtesy capacity plannings or case assessments, please sends an e-mail to answers@engineeringfundamentals.com. It is recommended to include a brief initial description of the case, ideally no more than one page, or project in progress / under study. The possibility of receiving and handling individual technical consultations has been foreseen but are limited as per availability. Alternatively make contact via telephone +1 917 720 3624 (Balestie & Balestie Ingenieros technical support).