Dutch startup uses air bubbles to remove plastic from rivers

Publicerad denFörfattareneuezeit.at

Dutch startup “The Great Bubble Barrier” has been building “air curtains” and removing tons of plastic from rivers since 2017. The technology is simple and promising. With the help of pipes in the water, a curtain of air is formed. Fish and other river dwellers can swim through it, while plastic waste is intercepted. 
The Amsterdam-based startup has been working on the technology behind the so-called “bubble barrier” for seven years. Initial pilot tests started in spring 2017, and the first filter system has been in place on the River IJssel in the Netherlands since November of the same year. Even tiny pieces of plastic with a diameter of one millimetre can be fished out of the water with it. The startup is currently testing whether even smaller plastic particles, i.e. less than 0.05 millimetres, can be filtered with the air barrier.
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Simple technology, clean rivers, healthy people
The way the air barrier works is simple. Pipes at the bottom of a river or canal pump air into the water. Combined with the current, the plastic pollution is collected together on one bank. From there, the plastic goes into a collection system. Then the trash is separated and can be disposed of properly. The start-up’s invention would also be great outside the Netherlands, because Austria’s rivers are also full of trash.
The WWF reports that almost two-thirds of Austria’s waters need to be “cleaned up.” Only 15 percent are still in “very good” condition, the paper states. Reasons for the pollution include the heavy construction density of some regions, as well as the industrial usage – such as sewage disposal or cargo shipping – of rivers. Environment Minister Gewessler (Green Party) complained about the “littering of our environment and waters”, but the interim report of the “Action Plan Microplastics” is still pending.
A stream of air bubbles propels the trash into a collection bin (Photo: The Great Bubble Barrier®)
Nearly 80 percent of plastic pollution in the sea comes from rivers
The technology from Holland not only holds promise for cleaning up freshwater streams, but also contributes to the cleaning of the oceans. Around 80 percent of plastic in the world’s seas comes from rivers. Currently, it is estimated that there are between 100 and 150 million tons of trash in the oceans. More than three-quarters of this is plastic. Every year, rivers wash between five and thirteen million tons more into the seas. Four million tons come from just ten major streams.
“We tested for six months in Amsterdam, and during this period we removed around 85 kilograms of plastic per month from the water,” say the founders of “The Great Bubble Barrier.
Projected over a year, that’s more than a ton of plastic waste. This is good not only for the environment, but also for people. Because the trash doesn’t just stay in the water. Fish and other sea creatures eat the plastic pollution. These then get back into the human organism via food, and there the – so called – microplastics can even lead to hormonal changes. Clean oceans, intact environment, healthier people – that seems to be the promise of the air curtain technology from the Netherlands. Läs mer…

Less hustle and bustle and loneliness: supermarket in the Netherlands has “chatting checkouts

Publicerad denFörfattareKontrast.at

The Dutch supermarket chain Jumbo has introduced slower checkouts for the first time in 2019. The idea is to give customers more time not only to pay and pack, but also to talk to the cashiers. The aim is to counteract the rampant loneliness, especially in old age. In the meantime, 200 of the 700 “Jumbo” stores in the Netherlands have such chatting checkouts.
One problem faced by older people worldwide is loneliness. Family members have moved away, friends have died or fallen ill. In addition, hectic schedules and unfamiliar techniques and processes make everyday life more difficult. In urban areas, this is compounded by anonymity. Going to the supermarket means getting out of one’s own four walls. At the same time, everything has to happen quickly at the checkout. A quick greeting, then you have to quickly throw all the groceries into the shopping bag and pay – that’s stress.
Jumbo stores have “chatting Checkouts to fight loneliness in the Netherlands
In 2019, the Dutch grocery chain “Jumbo” tried something new. As part of a campaign against loneliness by the Dutch government, they installed slower checkouts.
According to a survey, one in ten people in the Netherlands feel lonely. Of the 1.3 million adults over 75, as many as one in three say so.
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The government’s campaign addressed older people on the one hand, encouraging them to get out and do something. On the other hand, it appealed to everyone in the population to take a look at their own elderly relatives and neighbors in the house.
The supermarket chain has addressed the issue in its own way. The chain has over 700 stores in the country and has set up a “Kletskassa,” or “chit-chat checkout,” to take the stress out of paying and give people a chance to talk. The first of these cash registers was installed in the town of Vlijmen. The idea was so well received that the company has introduced chattering tills in 200 stores nationwide. In addition, chatting corners have been set up where customers can meet for coffee. The supermarket chain’s employees are also trained to recognize when someone is not feeling well – and to talk to them.
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