Chlorine tolerance of continuous electrodeionization modules

An electrochemical water treatment device, comprising:

• a feed inlet fluidly connectable to a source of water including dissolved silica and a chlorine-containing compound;
• and
• an electrochemical separation module fluidly connectable to the feed inlet, the electrochemical separation module comprising a dilution compartment, a concentration compartment, an ion exchange membrane positioned between the dilution compartment and the concentration compartment, and first and second electrodes,
• a first portion of a volume of the dilution compartment including a first anion exchange media positioned proximate to the feed inlet,
• a second portion of the volume of the dilution compartment including a second anion exchange media positioned distal to the feed inlet, the first anion exchange media having a greater resistance to the chlorine-containing compound than the second anion exchange media,
• the concentration compartment including at least one ion exchange media having a composition different from the first anion exchange media and different from the second anion exchange media,
• wherein the first portion occupies about 10% to about 30% of the volume of the dilution compartment.