Arsenic Removal
For highly efficient, cost-effective arsenic removal treatment from drinking water, ADI`s patented MEDIA G2 water treatment technology is capable of reducing arsenic levels to less than 2 ppb, even from concentrations as high as 1200 ppb. The MEDIA G2 technology has treated hundreds of millions of gallons of arsenic contaminated water since 1999 with this arsenic adsorption technology. Communities around the world are turning to ADI International to meet EPA and WHO guidelines.
Because of the negative health effects of ingesting arsenic, the Environmental Protection Agency (EPA) and the World Health Organization have established a Maximum Contaminant Level (MCL) of 10 parts per billion in drinking water. In the USA, compliance with the EPA limit is required by January 2006.
Over five percent of the community water systems in the United States which serve over 10,000,000 people require treatment to meet the new limit.
Arsenic - What is it?
Arsenic is a naturally-occurring element in groundwater throughout the world. It has no taste, color or odor, but its presence in drinking water can cause serious health effects.
In addition to naturally occurring arsenic, which is by far the largest source, arsenic can also occur due to pesticides, mining, and computer chip manufacturing.
Numerous studies have linked consumption of arsenic contaminated water to increased risk of cancer (skin, lung, and others), diabetes, and disfiguring skin conditions such as hyperkeratosis (“blackfoot disease”).
Worldwide Installations
ADI’s MEDIA G2® has been used worldwide since 1998.
Institutional: The first installation in the United States occurred in early 1999 with the retrofit of an existing activated carbon filtration plant at Rose Hill Center, a small health care facility in Michigan. The plant consists of six 36" diameter filters; retrofit included replacement of the activated carbon with MEDIA G2® and installation of an automated pH control system to maintain filter inlet pH at 6.5. The plant has been monitored by the USEPA since start-up, and continues to reduce arsenic from 30 ppb to <3 ppb.
Commercial: Two arsenic removal systems were installed at a bottled water facility in California in 1999. Each system consists of two 8' diameter stainless steel filter vessels operating in parallel, and treats 250 gpm, reducing arsenic from 10 ppb to 2 ppb. Since the filters do not alter the chemistry of the water, except removing arsenic, the water is able to maintain the important “natural spring water” designation.
Municipal: The first international use of this technology occurred in March, 1999 with the installation of a 100gpm plant in New Zealand. Arsenic at this location averages 26 ppb. A plant consisting of two 5' diameter vessels was installed outdoors on a concrete slab. It operates unattended, except for backwashing every 2 - 3 months. Outlet arsenic is <5 ppb.
There are now over two dozen plants installed worldwide, all reducing arsenic to less than 5 ppb.
