An innovative water disinfecting system

Nicola Brittain

A new chlorine dioxide system deploys a reactor under vacuum conditions to help reduce maintenance requirements.

A new chlorine dioxide system from pump specialist Lutz-Jesco deploys a reactor under vacuum conditions to mix chemicals. The technology reduces the complexity of a traditional disinfection system while providing several advantages.

Reducing maintenance requirements

This reduction of complexity means maintenance requirements and the risk of outages and chemical leaks are also reduced, thereby increasing the safety of the entire process. Designed for use in a range of applications including small waterworks and the beverage industry, the new chlorine dioxide system will be displayed for first time at the tradeshow IFAT 2024 to take place in Munich from 13 to 17 June.

Consisting of a reactor mounted in a protective cabinet, the system called Easyzon L deploys the company’s tried-and-tested acid-chlorite procedure with commercially available chemicals such as 9% hydrochloric acid and 7.5% sodium chlorite. The system takes the chemicals from two storage tanks and mixes them in the correct ratio in the reaction tank, to form chlorine dioxide. This reaction takes around ten to 15 minutes. After the chlorine dioxide has been diluted with water, the system then feeds the resulting 0.05 to 0.15% aqueous chlorine dioxide solution into a product tank, from where it is fed into the process by a dosing pump.

“Despite its compact design, the Easyzon L provides a maximum production capacity of 40 grams of chlorine dioxide per hour, corresponding to around 27 litres of chlorine dioxide solution,” says Steffen Roth, head of development at Lutz-Jesco GmbH. “The chlorine dioxide system is ideally suited to the disinfection of drinking water in a range of contexts such as small waterworks, hospitals, hotels and the beverage industry.”

Vacuum mixing requires maintenance

A special feature of the Easyzon L is the vacuum mixing of the chemicals without the use of dosing pumps. The system generates a vacuum to draw in the hydrochloric acid and sodium chlorite. The liquids are drawn in by a Venturi ejector. “This approach not only enables precise mixing but also reduces the complexity of the system, thereby reducing costs, maintenance requirements and the risk of outages,” explains Roth. 

Easyzon L enables reliable disinfection

The chlorine dioxide solution produced by Easyzon L enables efficient disinfection of drinking water. Despite its low concentration, the solution is effective against a wide range of micro-organisms, including bacteria, viruses, fungi and protozoa. High stability over a wide pH range from five to 11 ensures reliability in various applications. Moreover, chlorine dioxide forms fewer by-products during the disinfection process by comparison with chlorine and leaves no unpleasant odours or tastes.

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