VEOLIA EDI Modules For Continuous Electrodeionization Water Treatment E-Cell MK-7
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VEOLIA EDI Modules for Continuous Electrodeionization Water Treatment E-Cell MK-7
EDI is a safe and environmentally conscious water treatment solution, especially as a substitute for more traditional ion exchange resin solutions. EDI brings advances in both energy and operating expenses to the ultrapurity water treatment train. EDI requires no regeneration chemicals which simplifies environmental, health, and safety concerns while reducing chemical costs in the process. EDI has no hazardous wastewater discharge and wastes can be easily recycled without neutralization systems needed for ion exchange. EDI operates continuously which minimizes the risk of breakthrough seen with exhausted resin, and it simplifies operations by eliminating the need to take a system offline for regeneration. EDI also reduces facility requirements by having a smaller footprint and lower height requirement than ion exchange, particularly when including supporting equipment such as chemical dosing systems.
E-Cell EDI systems are ideal for multiple applications including: power generation for boiler and turbine feed water, steam generation and NOx control, microelectronics production, rinsing of semiconductor chips, solar panel production, light and heavy industrial ultrapure process water, food & beverage, and pharmaceuticals.
Flow rates: 7.5 to 28 gallons per minute per stack
Quality Assurance
Notes: 1. Actual performance may vary depending on site conditions. Reference Winflows projection software to verify expected product water quality as well as the resistivity, sodium, and silica performance guarantees that are offered for the design conditions. To obtain boron or other guarantees, contact Veolia. 2. Inlet pressure is determined by the downstream pressure requirements for the product and concentrate streams, the choice of counter-current or co-current operation, and stack pressure drop. 3. At nominal flow and 25°C. Reference Winflows projection software to verify for design conditions. 4. Reference the Winflows projection software and the E-Cell Stack Owner’s Manual to verify feed water specifications for the design conditions. 5. TEA (ppm as CaCO3) - Total Exchangeable Anion, this represents the concentration of all of the anions present in the feed water including contributions from OH- , CO2 and SiO2. Winflows must be used to confirm the feed water TEA is acceptable at the specific applications’ operating conditions. Table value is at minimum flow and maximum temperature. 6. 1.0 ppm as CaCO3 feed water hardness limit applies to standard counter-current flow operation only. Allowable feed water hardness decreases to 0.1 ppm as CaCO3 in co-current flow operation. 7. Allowable silica limit decreases above 5 m3 /h flow. Allowable silica limit decreases to 0.5 ppm with feedwater hardness above 0.5 ppm as CaCO3. 8. The boron feed level is limited to 0.3 ppm as B whenever there is a silica guarantee requirement or resistivity guarantee requirement above 10 MOhm-cm, as higher boron levels could impact performance. Without these requirements the limit is 1.0 ppm boron. 9. Reverse Osmosis (RO) or equivalent feed water: RO provides EDI feed water that is substantially free of particulate matter, colloidal material and high molecular weight organic substances, which can foul ion exchange media. RO permeate quality is specified since EDI stacks contain packed beds of ion exchange medium that cannot be backwashed/fluidized to remove particulate matter. Systems with an open system between a RO system (or other source) and E-Cell (ex. tank, decarbonator) must be fitted with filters immediately preceding the E-Cell, to protect the E-Cell against contamination with particulate matter. Generally, a 5 µm absolute or 1 µm nominal filter will be acceptable. 10.APHA - color standard/scale named for the American Public Health Association and defined by ASTM D1209.Veolia Water Technologies |
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| Product Tags: VEOLIA EDI Modules Continuous Electrodeionization EDI Modules E-Cell MK-7 EDI Modules | ||||||||||
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