Decision follows multi-year testing
Ionex SG announced that its nitrate removal system, the IX-N, was conditionally approved for installation in California by the State Water Resources Control Board (SWRCB), Division of Drinking Water. The decision follows extensive multi-year testing.
Ionex SG's strong base anion exchange treatment process is already deployed in California for removal of hexavalent chromium (chromium-6), with near-zero waste. The technology is regarded for its environmental, efficiency and low-cost advantages. Now, with the Conditional Acceptance decision, any public water authority in California can use the same technology platform for nitrate removal.
Nitrates are commonly found in California drinking water and can be harmful to health. In rural areas, the main source of nitrates is fertilizers. Nitrates are also a byproduct of wastewater treatment plants, dairy farms and leaky septic tanks.
"We're delighted to achieve Conditional Acceptance in California where the bar for drinking water quality is so high," said Ionex SG Founder & Director of Technology Mike Waite. "When it comes to treatment solutions, we learned that our customers' appetite for innovation is matched by respect for the environment. That said, they have high performance expectations for their systems, and their cost priorities are stringent. The IX-N system addresses these essentials.”
Since 2011, Ionex SG has conducted three demonstration-scale studies in California to fine-tune its Strong Base Anion Exchange Treatment with Sulfate Return Treatment Process for nitrate-contaminated drinking water. In its May 2015 Conditional Acceptance Challenge Study Report, the company documented that through the optimized design and operation of: a) the ion exchange distributor system, b) a multi-stage multi-column lead-lag process, c) a selective regeneration process and d) a sulfate return process, it is capable of designing, manufacturing and implementing a full-scale ion exchange treatment system that can produce safe drinking water. The Study Report further showed that the system can reduce the brine waste volumes from the typical 2% range of traditional systems, to less than 0.5% of drinking water produced.
Added Waite, "We could not have reached this milestone without the extraordinary cooperation of customers, consulting engineers and valued suppliers, as well as SWRCB professionals.”