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Water Treatment - Arsenic
Arsenic in Drinking Water
Studies have shown that people drinking well water with elevated levels of arsenic have higher risks of some diseases. Drinking well water with low to moderately elevated levels of arsenic over a long period of time may lead to chronic health effects, such as cancer.
Arsenic is a natural element found widely in the earth's crust. It is typically occurs in one of two chemical forms: arsenic (III) or arsenite (As+3), and arsenic (V) or arsenate (As+5). Although both types are potentially harmful to human health, arsenite (As+3) is considered more toxic than arsenate (As+5).
It is important to note that arsenite is also much more difficult to remove with conventional treatment technology. Certain technologies are ineffective in removing it. For instance, anion exchange, activated alumina adsorption, and reverse osmosis will reduce arsenic (V), but do not effectively reduce arsenic (III). Few technologies can remove both types of arsenic adequately in a single treatment step.
Unlike other technologies such as ion exchange, the AdEdge process removes both common forms of arsenic,(V) and (III), without pre-oxidation or chemical pre-treatment. The spent media is non-hazardous waste and there is no need for post treatment of residuals prior to disposal; materials can be disposed in a solid waste disposal facility.
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Arsenic Removal Systems
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Under Counter Solutions
Adedge DWS Series under-counter systems are the perfect solution for providing arsenic-free water for cooking and drinking. Complete preassembled systems include cartridges, housing, bracket, automatic shutoff flow meter, connection tubing and attractive chrome faucet. Easy installation with rapid results.
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Adedge Plus Series systems provide the ultimate in point-of-use protection. Incorporating AD33 technology, the Plus Series systems are the first carbon-block based products to achieve an NSF 53 certification for arsenic removal. Plus Series systems also have California certification. They remove a wide range of contaminants, including arsenic, lead VOC's pesticides, cryptosporidium, guardia and chlorine.
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Whole House Solutions
Adedge automated Medallion Series Systems are ideal for whole-house arsenic treatment. No chemicals, no regeneration, low maintenance worry free arsenic removal for the entire household. The most economical and effective whole-house treatment available. The nationwide network of Adedge dealers and installers gives you easy, quick access to professionally trained arsenic experts.
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DOW ADSORBSIA™ GTO™ media is a granular titanium oxide with strong affinity for arsenic, lead, and other heavy metals. This unique media is designed for non-regenerative applications. The inherently high adsorptive capacity of Dow's titanium oxide based technology has been formulated into a mechanically stable granulation suitable for use in a broad range of potable water applications. When exhausted, it is removed from the vessel and replaced with new media. Spent media from arsenic loading tests have been shown to pass both the TCLP and CA WET extraction protocols. ADSORBSIA GTO media is NSF/ANSI Standard 61 certified without limitations.
- Highest capacity media over a wide range of water conditions
- Nanocrystalline structure results in fastest kinetics allowing for smaller diameter vessels and a smaller system footprint
- Removes both As(III) and As(V) across a wide pH range without use of pretreatment
- Stable performance during pH fluctuations
- Dry, white granule that is easily installed and maintained
- Also available in the powder form (ADSORBSIA PTO™ media)
ADSORBSIA GTO media's high capacity makes it an ideal non-regenerable single-use product. It offers an affordable, easy to operate approach, especially for small or mid-sized systems. Eliminating regeneration means avoiding the hassles and cost of chemical storage and usage while eliminating waste stream disposal issues. ADSORBSIA GTO media's strong affinity for arsenic also allows the media to maintain a strong hold on the removed arsenic, allowing for easier and safer disposal. ADSORBSIA GTO media also features a longer useful life than traditional adsorbent media, for more productive, cost-advantaged operation.
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Business, Industrial & Community Solutions
Adedge APU Series Systems are pre-engineered, skidded treatment systems for small communities, large businesses and industrial applications. Available in a variety of sizes and configurations.
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