On-Site Chemical Generator Produces Disinfectant On Demand

On-Site Chemical Generator Produces Disinfectant On Demand
On-site chemical generators from MIOX Corp.

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On-site chemical generators from MIOX Corp. are designed for safe, lower-cost water disinfection (when compared to sodium hypochlorite or chlorine gas). Mixed oxidant solution (MOS) and sodium hypochlorite (HYPO) generators are available in a variety of sizes for municipal and industrial applications. All systems use the same salt, water and electrical process to produce disinfectant. The self-cleaning Vault generator (36 inches wide by 17 inches deep and 65.5 inches tall) produces 15 to 60 pounds per day of MOS and 25 to 100 pounds per day of 100 percent free available chlorine. It requires minimal maintenance beyond the annual replacement of filters.

The history of the MIOX system dates to the early 1990s where it was used on the battlefields of Iraq and Afghanistan to produce safe drinking water for U.S. troops.

“They were using other methods, such as iodine and hypochlorite, but that would take 48 hours at least of contact time to kill tough-to-kill-spores, such as Cryptosporidium,” says Cem Candir, vice president of sales and marketing for MIOX. At the time MIOX used an existing electrolytic cell process to create MOS — a chlorine-based product that in 20 minutes of contact time could treat a soldier’s water bottle using a marker-pen-size purifier.

The on-site generator (OSG) process moves water through a water softener and into a brine tank. The brine is fed into an electrolytic cell inside the OSG where an electrolysis process converts it into a disinfectant (an electrical current passing through the solution turns chloride ions into chlorine-based disinfectant).

“As a byproduct you would produce hydrogen gas, but at a relatively low concentration [which is vented],” Candir says. A controller or meter feeds the chemical into the disinfection process, or it can be piped to a hypochloride tank, providing 24 to 48 hours of buffer capacity.

MIOX systems range from the 21- by 16- by 13.5-inch RIO Zuni MOS, which produces 1 to 2 pounds of chemical per day, capable of treating up to 120,000 gpd (depending on dosage), to the trailer-sized 41.5- by 92.4- by 79.2-inch RIO Gila MOS that produces from 750 to 3,000 pounds of chemical per day, capable of treating up to 360 million gpd of frac site water.

Producing the disinfectant on site when needed eliminates the delivery and storage of dangerous chemicals, providing a safer environment for operators, Candir says.

Available for retrofits and new construction, the generators feature air-cooled power supply, corrosion-resistant cabinet and touch-screen display. 800/646-9426; www.miox.com


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