Granuldisk is a dishwasher manufacturer with an unusual and challenging vision for future products. Its (Swedish) tagline – “No water, no chemicals and happy people,” illustrates a concept developed in the 1970s that revolutionized the industrial dishwashing industry worldwide.
“Granuldisk was formed in 1987 around the continuous development and improvement of our patented technology. We still use water, but only ten percent of traditional volumes is used when compared to dishwashing by hand in a restaurant,” says Peter Schön, CEO of Granuldisk.
“Energy consumption is reduced by about 90 percent and the use of chemicals is minimal. The principle is based on small plastic granules that clean pots in minutes. People still need to operate the dishwasher, but compared to hand washing, still a common practice in restaurants and with caterers, we help save on personnel costs while improving their working environment at the same time.”
80,000 granules per second
“Small plastic granules wash pots, pans, and other kitchen utensils in under two minutes.
These PowerGranules® are only three millimeters in size. The trick is to develop the right mix of granule form, density and size and make them hard enough to remove leftover food – and also soft enough to not damage pots, pans and plates. In practice, burnt and dried food particles don’t stand a chance against these granules,” continues Schön.
“The granules are mixed in 65-degree water with a small amount of detergent to dissolve fats. This mix is pumped through nozzles and sprayed on dishes at high pressures and speeds. Eighty thousand particles per second blast the dirty dishes at speeds of up to 200 meters per second cleaning dishes in minutes. The PowerGranules® are then separated from the water. A short 85-degree rinse completes the cycle ensuring optimum hygiene. The granules need to be replaced after 2,500 cycles. The plastic is of course approved for food service use.”
“Our clients include hospitals, schools and elderly care facilities so hygiene is obviously important. The 85° mix of granules, water and detergent helps disinfect the dishes and kill microorganisms.”
“Environmental issues are increasingly important for both for the public sector and the restaurant industry. Few realize that the largest consumption of water, energy and chemicals in dishwashing occurs not in the dishwashing machines themselves, but in the sinks next to them. Traditional dishwashing methods with water and chemicals often require three steps – presoaking and scrubbing followed by dishwashing to achieve hygienic results. You wouldn’t put a burnt lasagna platter in the dishwasher without first soaking it, would you? Our point is that washing with granules is the only step you need to take.”
Life cycle thinking
“We continuously strive to make our products more environmentally friendly, both during the manufacturing processes and when they are used. For example, 70 percent of the components in dishwashing machines are made of recyclable stainless steel. To save time, water and energy, we continuously optimize our technology to become the world’s best environmental option for the catering industry.”
“We actively reduce our environmental impact as machine manufacturers as well. The challenge is to drive these developments in the face of climate change. To this end, we participate in tree planting programs to help compensate for the carbon dioxide generated in the production of the materials we use in our machines. This includes transportation emissions from the factory to the end customer,” concludes Schön.
The article was published in June 2015