According to https://www.pfonline.com,
"Electro-ceramic desalination (ECD) employs alternating cationic and anionic selective membranes. When an electric field is applied, ions are driven across the membranes, leaving ionically-free water behind. Traditional desalination membranes are constructed of polymer membranes and quickly foul and form permanent scale. Membrion’s technology employs ceramic-based membranes which can operate in the harsh environments associated with wastewater streams. These unique membranes can overcome common fouling and scaling conditions utilizing polarity reversal. The polarity of electrodes and the flow paths are switched so that the concentrate path is flushed with dilute water driving foulants off the membrane surface thus extending membrane life."
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