Product Documentation

The concept of water softening has been in use longer than many of us may have been led to believe. Here, the author gives a brief historical lesson as well as a look into the future on where he sees the industry headed.

As a general class, the arsenic adsorbents are all based on similar adsorbent chemistry. An insoluble metal oxide/hydroxide is the adsorbent, which is contained in some type of granular substrate that is porous enough to expose the adsorption sites to the water, yet robust enough to maintain its shape under the conditions of use. Arsenic in the form of arsenate, an anion, is adsorbed by co-precipitation onto the metal oxide, while arsenate (trivalent arsenic) is attracted by chelating forces. Precipitated arsenate, in most cases, is tightly bound to the oxide and does not come back off under any normal conditions found in potable water. All of the arsenic adsorbents promise extremely long throughputs by targeting the arsenic species, while ignoring common ions, such as sulfate, chloride, sodium, calcium, etc.

Scientists use deionized water in a variety of areas from glassware washing to DNA synthesis. To provide the proper deionization system, it’s important to understand the specific needs and requirements of laboratory grade water. Laboratory water systems come in standard configurations with a variety of available options.

Solutions for removing arsenic from water.

Selection of Ion exchange resins for sugar decolorization as per the color of sugar syrup

Overview on using ion exchange resins for waste water or ground water remediation applications.

How to remove arsenic from water using brine regenerable anion resin.

Discusses the selection and use of anion resin for removal of contaminants from water and the influence of sulfate levels.

The chemistry of silica in water and the methods of its removal.

Silica has always confounded water treatment dealers in how to handle it and greatly reduce the contaminant. As we discover more information about silica due to further studies, though, some technologies have come to the fore. A good place to begin is to examine the chemistry of silica and how it pertains to various approaches available to dealers.

Silica is poorly ionized at neutral pH and has limited solubility. Membrane and precipitation processes can be quite effective at elevated pH but are either ineffective or less than wonderful at neutral pH. Demineralizers, with hydroxide-form anion resin, remain one of the best methods for removing silica, especially when TDS removal is also required.

Using two IX units for meeting drinking water limits.

Boron Removal From Ultrapure Water By Boron SelectiveIon Exchange at Advanced Micro Devices

Factors affecting the efficiency and performance of brine regenerated water softeners

Water Treatment Plant Design, Fourth Edition By American Society of Civil Engineers