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Industrial Electrodeionization Module Articles & Analysis
8 articles found
Mechanism of Silica Removal in Electrodeionization (3-Zone EDI Model) Keywords: Electrodeionization, EDl, CEDI, Water, Pure, Ultrapure, Silica, SiO2, Silicic acid, H4SiO4, Reactive; Non-reactive; Colloidal; Reverse Osmosis; lon-Exchange; Resin; Anion; Cation; Fouling; Rejection; Process design; Membrane; Zones; Electropure; SnowPure Abstract: ...
Reverse osmosis is a water treatment process that is still the principal method of removing impurities from water. But some applications such as pharmaceuticals require an even higher level of purity. In most situations, electrodeionization systems can provide higher ultrapure chemical free water production. Reverse osmosis (RO) and electrodeionization (EDI) are complimentary but distinctly ...
The assembly of cell pairs between electrodes is called an EDI module or an EDI stack. While some systems are less than 1 gallon per minute (gpm) with a single module, higher flow rate systems use multiple modules or stacks. Some systems have been installed as high as 3,000 gpm or even more. What Industries Could Benefit from ...
EDI for Dealers is now a reality. Ultrapure water is a concern for water treatment companies who service critical applications such as Laboratory and Pharmaceutical. You must apply the right technology for your customers’ needs, while remaining competitive and realizing a reasonable profit. EDI Value Proposition: PEDI servicing can be expensive and can keep customers from contracting with ...
Another was to deionize water, which ED could not do effectively. First electrodeionization module 1977 Electrodialysis (ED) was first made successful by Ionics Corp in the 1950’s and 1960’s with the advent of ion-selective membranes and the concept of EDR. ...
In electrodeionization, DC voltage is the force for driving ions out of the stream to be purified. Current is a result of the movement of ions. Both as a matter of physics and as a practical matter, SnowPure recommends using “Voltage Control” for EDI: set the DC voltage potential to the EDI system and walk away–let the current follow the ion load on the EDI. The physics say ...
Part 1 of this series compared spiral-wound electrodeionization(EDI) with more traditional plate-and-frame EDI. The plate-and-frame design is similar in construction to a plate heat exchanger with multiple fluid chambers sandwiched between a set of endplates (and electrodes). Within there are a series of cation and anion ion-exchange (IX) membranes. The spiral-wound design uses a pressure vessel ...
Electrodeionization (EDI) is a water treatment technology that has gone from an unproven and unknown commodity to one that has revolutionized the industry in the past 20 years. ...