Nitrate Treatment System

Purolite's Nitrate Selective Resin Part of A Major Plant Upgrade in Ohio

This February, BOSS Magazine featured an article on the capacity increase project at Dublin Road Water Treatment facility that discussed the leadership, innovation, collaboration, sustainability and best operational procedures incorporated into the plant. Purolite was invited to provide a company showcase for the issue because we played a significant role in the upgrade and the control of nitrate in the treated water. The showcase page on the project will be available online through 2018.

Purolite's team worked with project engineers for over 6 years to plan and design a system that would effectively treat the nitrate in the water to keep the community safe, including extensive pilot testing that took many different scenarios of water chemistry into consideration.

Agriculture is a large part of the economy in Ohio, USA with large crops of soybeans, corn, wheat, apples, pumpkins, strawberries, peaches, cabbage, peppers, tomatoes, potatoes, tobacco, cucumbers, oats, squash and grapes being grown for domestic use and export. The state supports over 14 million US acres of farmland and hosts over 70,000 farms.

The abundance of rolling farms are beautiful, but there is the effect of agricultural runoff due to the fertilizer—both natural manure and chemical. In soil, fertilizers containing inorganic nitrogen and waste containing organic nitrogen decompose and give off ammonia, which is then oxidized into nitrate and nitrite. In the Columbus, Ohio area in Franklin Country, this resulted in very high Nitrate levels in the municipal water supply.

High levels of nitrate and nitrite are of concern, particularly to young children, as it disrupts the transfer of oxygen in the cells resulting in oxygen starvation. In adults, in can affect thyroid function and interact with some medications.

Nitrate levels are regulated by both the U.S. Food and Drug Administration (US FDA) for a maximum contaminant level (MCL) in water of 10 parts per million (ppm) (10 mg/L) for nitrates and 1 ppm (1 mg/L) for nitrite. The World Health Organization (WHO) guideline value for nitrate in drinking water is 50 mg/L (50 ppm) as nitrate and 1 mg/L (1 ppm) as nitrite.

Purolite takes great pride in offering customized solutions for nitrate and other contaminants to keep water safe and clean. Contact your local sales office to learn more about nitrate treatment in water systems.