Kronen Offers Integrated UVC Water Disinfection System

The subject of hygiene plays an important role in the production facilities of the food industry. Kronen offers a new hygiene highlight with the sophisticated washing technology of the GEWA washing machines for industrial use in industry, catering and commercial kitchens

Via a built-in UVC reactor, the wash water is permanently disinfected and returned as germ-free process water. 

For this purpose, the market-proven UV components of company sterilAir® (CH-Weinfelden) are in use, which meet the high demands of the food industry. 

For a customer in Germany, the trading company M.S.G. Frucht GmbH in Maintal, 2 washing machines GEWA 3800V ECO are manufactured in a cascade setup (pre- and main washing) with a new UVC water disinfection system. 

Since 2009, M.S.G. has belonged to the Compass Group Germany providing their businesses nationwide as a central fruit and vegetable supplier with exclusive fresh products from the region.   

With this innovative Kronen GEWA washing line, salads and herbs, vegetables and fresh-cut products are washed thoroughly and carefully in a continuous flow process (without mechanical immersion). In addition, the washing machine is equipped with an insect & fines removal system (motorized drum). Insects and small particles are flushed away from the water surface. 

Also, chilled fresh water is added through the shower pipes above the vibration deck via an on-site cooling connection. This chilled water will be returned to the water cycle of the GEWA, thus ensuring a continuous refresh of existing water in the GEWA wash tank. 

The use of the UVC reactor serves in particular the prevention of cross-contamination, ensures higher process reliability and allows a reduction in the amount of water used. 

Details and functional description of the UVC reactor:

By default built-in pumps in the washing machine, the process water is pumped completely through the UVC reactor. The overall performance is 60 m³/h circulation for a water volume of about 750 litres. This is equivalent to a 80fold theoretical passage of all wash water per hour, or 80 UVC treatments per hour.

The UVC reactor is connected to the washing machine by a fixed piping, ensuring the return of disinfected water in the wash tank.

The intensity of UVC reactor is perfectly matched with the capacity of the pumps and the water cycle thus works continuously.

The UVC reactor consists of 6 ET tubes, which are operated economically via 3 ballasts with an exemplary low energy consumption. These ET modules are equipped with a counter of ignition, the tubes are designed for 12000 ignitions or 12000 operating hours.

For cleaning and exchange, the UVC tubes are easily removable, this guarantees a high maintainability. 

Basically each GEWA machine with an UVC reactor can be retrofitted. Upon request, the UVC reactor can be provided for test purposes. 

Source: Fresh Plaza

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Taxonomy

• UV Disinfection
• Technology
• Disinfection