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Arsenic Removal Systems

Health Effects of Arsenic

Throughout history arsenic has been used as a poison. One of the earliest documented cases of arsenic poisoning was Nero’s poisoning of Brittannicus to secure the Roman throne in 55 A.D. French scientists believe that French and British conspirators poisoned Napoleon with arsenic. In the winter of 1609-1610, more than 90 percent of the Jamestown colony perished. Many scientists believe the deaths were the result of arsenic poisoning at the hands of the Spanish government intent on getting rid of the English colony.

Today, arsenic continues to poison millions of Americans. The element occurs naturally in the soil and enters the water supply throughout the U.S., especially in the West, Mid-west and New England. After more than 20 years of debate, a new arsenic standard was signed into law in late 2001, reducing the allowable level for the contaminant in drinking water by more than 80%. The law impacts 4,100 public water systems that serve 13 million people. An additional 40 million Americans obtain their water from private wells which may have high levels of arsenic. For the past two decades, the EPA’s maximum acceptable level of risk for all other drinking water contaminants has been one in 10,000.

Potential short-term health effects associated with arsenic exposure include:

Stomach pain Difficulty Swallowing Skin lesions
Convulsions Low blood pressure Vomiting
Pigmentation Gastrointestinal problems

Potential long-term health effects associated with arsenic exposure include:

Bladder cancer Gangrene Immunological disorders
Skin cancer Limb loss Endocrine disorders
Kidney cancer Keratosis Hematological disorders
Liver cancer Neurological effects Reproductive problems
Prostate cancer Cardiovascular disease Developmental problems
Lung cancer Pulmonary disease

Arsenic Cancer Risk Factor

(in ppb)

Approximate Total Cancer Risk
(assuming 2 liters consumed / day)

0.5 ppb

1 in 10,000

1 ppb

1 in 5,000

3 ppb

1 in 1,667

4 ppb

1 in 2,500

5 ppb

1 in 1,000

10 ppb

1 in 750

20 ppb

1 in 500

25 ppb

1 in 250

50 ppb

1 in 100

100 ppb

1 in 50

Source: National Academy of Sciences

POINT–OF-ENTRY / RESIDENTIAL SOLUTIONS

Adsorption Media – Arsenic Reduction

Adedge Technologies’ NSF Certified AD33 media is the industry standard for arsenic reduction that reduces up to 99% of total arsenic, including both arsenic (III) and arsenic (V). It is also effective in reducing other heavy metals such as lead, cadmium, antimony and molybdenum. This revolutionary new iron-based granular adsorption media has 4 to 10 times the capacity of many adsorption medias. Adedge’s product is specifically designed for commercial and residential systems to meet the new EPA arsenic standard of 10 ppb. Developed in the mid-nineties, this ferric oxide-based product has been successfully used in large-scale drinking water applications since 1999. The new AD33 media is discardable when spent and requires no chemicals or regeneration. It has become the premier product of choice for whole house drinking water treatment systems for reliable, cost effective, proven reduction of arsenic.

Removal of up to 99% of total Arsenic in water, including As(III) & As(V) with no wasting of water.

NSF 61 product listing. Effective over broad water chemistry.

Spent media discarded as non-hazardous household waste.

Simple application for whole house POE applications for arsenic removal.

Reliable performance, low maintenance. Adaptable add-on to water softening or other existing equipment.

2 – 2.5 times lighter than other iron-based media; easily backwashable; arsenic not released or discharged in backwash water.

Effective for reducing lead, chromium, cadmium, molybdenum, and antimony.

Imparts no harmful chemicals into the treated product water. No salt, chemicals or regeneration needed.

POINT-OF-USE CARTRIDGE FOR ARSENIC REMOVAL

The Ultimate In-Line Solution.

Reynolds Water Conditioning Co has an in-line filter cartridge for arsenic reduction. This product has high efficiency arsenic reduction for a practical and cost effective solution at the tap. The cartridge design utilizes Adedge AD33's proprietary granular ferric iron oxide adsorption media for long life and unparalleled performance to meet the challenges of the new 10 ppb drinking water standard for arsenic established by EPA. The product effectively reduces both Arsenic (V) and Arsenic (III) without pre-oxidation. Ideal applications include use as an RO post filter or as a stand alone filter system.

CARTRIDGE PERFORMANCE

Applications

Up to 50 ppb of arsenic, rated flow 0.5 gpm

Arsenic Reduction

Use as a post filter for reduction of up to 99% of total arsenic; effective for both As (III) & As (V).

Capacity

1000 gallons; 4-6 times longer life than other commercial adsorption options. (consult Reynolds for specific details)

Contaminants

Arsenic

Certifications

NSF 61 product listing on media

Components

FDA listed components

Secondary Benefits

Effective for reducing lead, chromium, admium, molybdenum, zinc, and antimony

Extractables

Imparts no harmful chemicals into the treated product water

This in-line filter cartridge uses Adedge Technologies AD33 arsenic reduction media.

Arsenic Frequently Asked Questions
Adedge AD-33 Arsenic Absorption Media for Residential Systems

What is AD-33 media?

The product is a dry, granular, iron oxide adsorption media. It has been designed specifically for reducing arsenic and is ideal for both drinking and process water applications.

Does the product reduce both forms of naturally occurring arsenic?

Yes. Both arsenic (III) and arsenic (V) are reduced by the product up to 99%.

How is the product applied for a residential application?

The media is typically employed within a standard, conventional-size cylindrical fiberglass tank with a top-mounted valve, laterals, riser and underbedding. Further sizing and use information is provided by the water professionals at Reynolds Water.

Does the AD-33 media impart any odor, taste or extractables into the water?

No. The Ad-33 media meets NSF/ANSI drinking water Standard 61 which confirms the safety and quality of products in contact with drinking water.

How long will the AD-33 media last?

The media life is dependent on several key factors: water chemistry, usage patterns, contact time, and treatment goals. A typical residential system treating arsenic 10-50 ppb, containing 2 cubic feet of AD-33 media will last several years depending on the level of arsenic, gallons per day usage, pH and other factors.

How is the spent media disposed?

The spent media (after being exhausted with an arsenic containing water) has been tested and has passed the EPA’s standard protocol for determining hazardous wastes. This test known as the TCLP test has shown that the media can be discarded as non-hazardous waste in a sanitary landfill.

Must iron and manganese be removed prior to treatment with AD-33?

Like most adsorption products, this product works best if iron and manganese are removed before adsorption due to the potential fouling of the adsorption bed with oxidized iron. Pretreatment for iron and manganese is recommended to 0.3mg/l and 0.5mg/l respectively prior to arsenic adsorption for best results. Contact Reynolds Water for suggested pretreatment options.

Does the AD-33 media need to be backwashed? If so, how often?

Periodic backwashing is recommended for two reasons. The media over time, can compact and preferential channels can develop causing short-circuiting. Additionally, sediment or suspended solids (if present) may accumulate in the adsorption media. To prevent excessive pressure drop or channeling, gentle backwashing to lift or fluff the bed is performed periodically. The backwash water typically has very low or non-detectable levels of arsenic.

Can the AD-33 media be used in conjunction with an RO system or water softener?

Yes. The preferred location of the arsenic treatment is placement after the softener or RO system.

How do I monitor for arsenic?

Samples can be analyzed by a certified / qualified laboratory for total arsenic using several different methods for typically $15-20 per sample. Field test kits are also available that can detect the presence of arsenic at very low levels (<5 ppb). These tests have been used as inexpensive indicators of system performance, but should be used in conjunction with actual laboratory results. More information can be provided about test kits by contacting Reynolds Water.

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