How to Remove Selenium from Water

Product Description

Selenium is a mineral dispersed in water, soil and certain food. These minerals are vital for the proper functioning of many body processes. Diet is the primary producer of selenium in the human body. The number of selenium present in food relies on how and where the food was grown. Food supply such as wheat, chicken, fish, crab, and liver are typically sufficient selenium sources. As aforementioned, selenium is a necessary micronutrient for bodily processes which include, fertility, cognitive ability, and a healthy immune system.

While low doses of selenium poses no threat to humans, higher concentrations of it can become very unsafe when ingested. Higher doses can lead to the development of selenium toxicity, which is capable of causing unwanted symptoms such as fatigue, irritability, headaches, vomiting, and nausea. Other side effects are lightheadedness, muscle soreness, tremor, facial reddening, blood clotting issues, liver and kidney issues.


Pure Aqua designs and manufactures the most advanced reverse osmosis and ion exchange systems in the market. Our systems are tailor-made to completely remove harmful minerals such as selenium from water, including mine water treatment and nitrate removal. Contact us to learn more about our systems and how we can help you!


Selenium water treatment consists of two water purification methods that work in different ways for the removal of selenium from water. These two methods we will be discussing are reverse osmosis, and ion exchange, each with their own set of advantages.

Reverse osmosis systems operate by sending untreated water through layers of membranes that allows the water to pass through but prevents the passage of unwanted minerals such as selenium. RO systems are advantageous to most companies due to their cost-effectiveness, simple maintenance, and ease-of-use. Pressure is needed to force the water through the membrane containing the minerals. The degree of pressure required relies upon the amount of mineral content within the feed water.

Ion exchange systems work by filtering selenium through the adsorption of them onto ion exchange resins. Ion exchange resins specifically designed for the removal of selenium from water are highly efficient, even after the resin becomes congested with other ions such as calcium. The filtration of selenium occurs throughout passing the water through a selective ion exchange resin will capture the selenium ions.

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  • 5
    Thank you for the information!

    Posted by Pacífico P. on May 3rd 2019

    Learned how harmful selenium can be

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