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africa|cleaning|engineering|engineering-news|industrial|project|systems|technology|water|solutions

Tech partnership brews beer from re-used water

CLEAN SWEEP
Ozone treatments completely distroy all bacteria, viruses and cysts in the water

Xylem Water Solutions treatment project manager Brendan van Wyk discusses the use of ozone and ultraviolet technology in the cleaning processes in breweries and wineries. Camerawork: Kutlwano Matlala. Editing: Nicholas Boyd. Recorded: 21.10.20

CLEAN SWEEP Ozone treatments completely distroy all bacteria, viruses and cysts in the water

13th November 2020

By: Halima Frost

Senior Writer

     

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Local water technology company Xylem has partnered with Berlin water utility Berliner Wasserbetriebe and the Kompetenzzentrum Wasser Berlin (the Berlin Centre of Competence for Water) to produce Berlin Reuse Brew.

Berlin Reuse Brew is a beer made from purified and treated wastewater.

“The beer, which launched in July last year, will hopefully reach South Africa once the country lifts all Covid-19 lockdown regulations,” enthuses Xylem Water Solutions treatment project manager Brendan Van Wyk.

He tells Engineering News that using ozone and ultraviolet (UV) technology has grown exponentially over the past few years, owing to its being the “greener option” and offering better cleaning properties.

“Both ozone and UV have become quite prevalent in the cleaning processes of breweries and wineries, where bottle cleaning, cleaning in place and wastewater reuse are high,” he says.

Ozone is a powerful antioxidant, which mitigates the need for chlorine or chloride- based cleaning chemicals, which leave a residue and acidic wastewater after the cleaning process.

Ozone allows for a faster contact time – which is needed to expose the contaminant long enough to be effective – of about 3 000 times, compared with chemical-based cleaning options.

Importantly, ozone completely destroys all bacteria, viruses and cysts in the water.

UV solutions incorporate the use of UV rays, which penetrate harmful pathogens in water; however, the UV attacks the DNA or ribonucleic acid (RNA) of the organism, making it unable to metabolise or grow.

The DNA or RNA of dead bacteria remain in the water after cleaning, which can be consumed as sustenance by animals, such as fish, that might be found living in the cleaned water downstream. However, the water becomes incapable of carrying unwanted contaminants.

In a statement released at the launch of the beer in July, at the International Water Association (IWA) International Conference on Water Reclamation and Reuse in Berlin, Kompetenzzentrum Wasser Berlin member Ulf Miehe stated that the aim of creating Berlin Reuse Brew was to demonstrate that the technical possibilities of turning wastewater into drinking water were “almost limitless”.

Meanwhile, Van Wyk points out that Xylem Water Solutions’ range of Wedeco ozone systems can cater for any size operation, from smaller microbreweries to larger mass-produced drinks of manufacturers.

“Wedeco systems accommodate individual requirements in the most efficient manner, whether for eliminating micro-organisms in wastewater, disinfecting public drinking water or treating process water for industrial purposes.”

He adds that ozone and UV treatment solutions are not only aimed at the brewery and winery industry but also wastewater treatment plants, bottle-washing facilities, cooling towers and abattoirs, as well as fruit and vegetable farms for cleaning produce.

Edited by Zandile Mavuso
Creamer Media Senior Deputy Editor: Features

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