Electrodeionization Technology Articles on Environmental XPRT

Electrodeionization

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. The technology was first introduced to the market in 1987 by Ionpure Technologies. EDI is used in small and large applications. Laboratories use EDI in systems as low as 360 gallons per day (gpd), while power plants, ...

Jun. 1, 2006

By Agape Water Solutions, Inc.

Electrodeionization, Revolutionary or Evolutionary Technology?

Electrodeionization (EDI) technology has matured since its commercial introduction over 16 years ago. Acceptance of the technology has been driven by lower costs, higher water quality demands, and improvements in themanufacturing techniques of the product. EDI has not been revolutionary but evolutionary. This paper will review the advancements over the product life cycle and explain the different ...

Mar. 22, 2010

By Applied Water Solutions, Inc.

Spiral wound electrodeionization

Electrodeionization (EDI) is typically used in combination with RO systems to produce pure or ultrapure water, continuously and without chemicals. This combination eliminates the need for regeneration chemicals and the inherent cost, safety and inconveniences of storage, handling, treatment and discharge associated with ion exchange systems. Power plants, electronics manufacturers and ...

Jul. 1, 2010

By Agape Water Solutions, Inc.

Comparison of Continuous Electrodeionization Devices

Electrodeionization (EDI) is the standard method of generating high purity water bypolishing reverse osmosis permeate. The technology utilizes electrical current toremove ionic impurities while continuously regenerating cation and anion exchange resins. EDI is utilized in ...

Dec. 1, 2014

By Agape Water Solutions, Inc.

Reverse Osmosis and Electrodeionization Alternate to Service DI

Electrodeionization (EDI) is a chemical free water treatment technology that eliminates the need for off line chemical regeneration. EDI has gone from an unproven and unknown commodity to one that has revolutionized the industry in the past 20 years. Much has been written and discussed about the use of EDI systems for industrial applications such as power plants and semiconductors, where flows ...

Mar. 6, 2008

By Agape Water Solutions, Inc.

Spiral wound EDI technology part 1

Water purification by reducing the concentration of ionic impurities has been an area of considerable technical interest. Water treatment technologies have rapidly advanced in recent years to where a myriad of options have been developed for this purpose. The most well-known processes include electrodialysis, electrodeionization (EDI), liquid chromatography, membrane filtration, and ion exchange. ...

Jul. 1, 2010

By Agape Water Solutions, Inc.

QUA Interviewed by Industrial Waterworld at AMTA Membrane Technology Conference 2016

QUA’s Director of Sales and Marketing, Fred Wiesler, was recently interviewed by Industrial Waterworld at the American Membrane Technology Association (AMTA)’s Membrane Technology Conference 2016 in San Antonio. Qua's Fred Wiesler describes the company's many offerings, including UF, MBR, and ceramic membranes. Highlighted: fractional electrodeionization (FEDI) technology, which ...

May 16, 2016

By QUA Group LLC

How to Choose the Best Boiler Feed Water Treatment Technologies for Your Plant

When it comes to choosing technology for boiler feed water treatment, knowing the feed water source quality in relation to the water quality required for your specific boiler is essential, as inadequate water treatment can lead to the scaling, corrosion, and fouling of the boiler and downstream equipment. We’ve mentioned this before in some of our previous boiler feed water treatment ...

Sep. 19, 2016

By SAMCO Technologies, Inc.

SnowPure Tip: Effective CO2 Removal

CO2 is difficult for both RO and EDI to remove since it has no charge or is weakly ionized. It is important to remove CO2 in the electrodeionization pretreatment because CO2 lowers EDI product water quality, competes with silica for removal, and may lead to scaling ...

Sep. 13, 2012

By SnowPure Water Technologies

Heat Sanitization Basics

Even small numbers of bacteria are a problem for critical water systems like pharmaceutical USP water, dialysis water, and water for ...

Oct. 8, 2012

By SnowPure Water Technologies

QUA’s FEDI Chosen for LNG Refinery

Project Background Sabine Pass, a large LNG refnery in the United States, required a membrane desalination solution to cater to its extensive process water needs in order to produce a large amount of liquefed natural gas for export. The water is used for injection for compressor turbines for methane, propane and ethylene, wash water for gas turbines and other utility make-up ...

Dec. 18, 2015

By QUA Group LLC

Cost reduction and operating results of RO-EDI

Electrodeionization (EDI) uses electrical current, in lieu of acid and caustic chemicals, to regenerate cation and anion resin. Reverse osmosis/EDI systems are now widely used to replace conventional mixed-bed ion-exchange (IX) technology in a broad range of applications. Proven effective at high flowrates, EDI has in recent years been incorporated in water treatment plants around the world, ...

Jul. 1, 2010

By Agape Water Solutions, Inc.

Challenge #2 - Manufacturing, General Industry

A small industrial entrepreneurial company on the East Coast was considering using high purity water in the production of their high quality product. They were concerned the ‘larger’ water companies would not give the project the attention it deserved, and that the system may cost too much. They came to Applied Water Solutions, Inc. for the solution. Solution AWS met with the client and ...

Oct. 23, 2009

By Applied Water Solutions, Inc.

Sohar Refinery

Project Background Orpic (Oman Oil Refineries and Petroleum Industries Company) required a thermal seawater desalination solution as part of its Sohar refinery improvement project to ensure an uninterrupted supply of fresh feed water to for its boilers. ...

Dec. 18, 2015

By Aquatech International Corporation

EDI for Power Plants -- Importance of silica

Power plants use high purity water to drive steam turbines. Cogeneration plants are highly efficient, using both exhaust turbines and high pressure steam turbines. In the 1960's, boilers operated at 450C (840F) and 4MPa (40 atmospheres). Today's leading edge boilers operate at 620C (1150F) and 30MPa (300 ...

Dec. 17, 2012

By SnowPure Water Technologies

Common Boiler Feed Water Treatment Issues and How to Avoid Them

When treating boiler feed water (the combination of boiler makeup and condensate return water), several issues can arise that cause boiler scaling, corrosion, fouling, and system failure. Below, we break down the most common boiler feed water issues and how to avoid them to help ensure system efficiency and operational safety. While treating boiler feed water is extremely ...

Sep. 23, 2016

By SAMCO Technologies, Inc.

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