Pure water equipment manufacturers explain to you what factors affect the operation of such equipment

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　　(1) Effect of EDI feed water conductivity. At the same operating current, as the conductivity of the raw water increases, the removal efficiency of weak electrolytes by EDI decreases, and the conductivity of the effluent also increases. If the original conductivity is low, the ion concentration is also low. This low ion concentration results in a larger electromotive force gradient forming on the surfaces of the resin and membrane in the dilute compartment. Consequently, water dissociation is enhanced, the limiting current increases, and more H+ and OH- ions are generated. This, in turn, improves the regeneration effect of the cation- and anion-exchange resins filled in the dilute compartment. 　　(2) Effect of operating voltage-current. As the operating current increases, the quality of the produced water keeps improving. However, if the current is increased after reaching its maximum level, the amount of H+ and OH- ions generated from water ionization becomes excessive. Apart from those used for regenerating the resin, a large number of surplus ions act as charge-carrying ions for conduction. Meanwhile, due to the accumulation and blockage that occur as these numerous charge-carrying ions move, reverse diffusion even takes place; as a result, the quality of the produced water deteriorates. 　　(3) Effects of turbidity and Pollution Index (SDI). The water production channel of the EDI module is filled with ion exchange resin; excessive turbidity and pollution levels can cause blockages in this channel, leading to an increase in system pressure difference and a decrease in water production volume. 　　(4) Effect of hardness. If the residual hardness of the feed water in EDI is too high, it can cause scaling on the membrane surface in the concentrate channel, resulting in a decrease in concentrate flow rate and a drop in the resistivity of the produced water. It affects the quality of the produced water; in severe cases, it can clog the concentrate and brine flow channels of the components, leading to their damage due to internal heating. 　　(5) Effect of TOC (total organic carbon). If the organic content in the feed water is too high, it will cause organic contamination of the resin and selectively permeable membranes, leading to an increase in the operating voltage of the system and a decline in the quality of the produced water. It is also easy for organic colloids to form in the concentrated water channels, blocking them. 　　(6) Influence of metal ions such as Fe and Mn. Metal ions such as Fe and Mn can cause the resin to be \"poisoned\". Metal “poisoning” of the resin can lead to a rapid deterioration in the quality of EDI effluent; in particular, the removal rate of silicon decreases rapidly. Furthermore, value change is due to the oxidative catalytic effect on ion exchange resins, which causes permanent damage to the resins. 　　(7) Effect of CO2 in the influent water. The HCO3- generated from CO2 in the feed water is a weak electrolyte that readily penetrates through the ion exchange resin layer, thereby degrading the quality of the produced water. 　　In addition, inlet water temperature, pH value, SiO2, and oxides also affect the operation of the EDI system.