| membran (E-Mail nur eingeloggt Sichtbar) am 27.11.2019 13:11 Uhr |
"Bill Gates held up a beaker of human feces at the reinvented toilet expo in Beijing on November 6, 2018"
[https://www.businessinsider.de/bill-gates-foundation-helps-invent-tiger-toilets-powered-by-worms-2019-1]
More than 4,000 such "Tiger Toilets" have been installed to date across India, in homes of people who were previously defecating in the open.
(...)
"These worms, they won’t escape on their own, because they won’t survive in just soil," Oak said. They need our human waste to live.
(...)
The Tiger Toilet system costs about $350 USD to install and requires no connection to drainage pipes or a mainline sewer.
Instead, the worms are contained in a container below the toilet, and they feast on feces. The creatures' activity leaves behind a mix of water, carbon dioxide, and a small amount of wormy compost (that's technically the worms' poo, though it's much less toxic and more nutrient-rich than ours).
The resulting water isn't clean enough to drink, but it "can go into the ground and it sort of gets filtered naturally from there on," Oak said. No wastewater treatment plant needed.
(...)
The earliest editions of Tiger Toilets are now more than five years old and their worm compartments haven't needed any maintenance yet — the slimy creatures are still chomping away. Eventually, after about eight to 10 years, the company expects some toilet maintenance to be required. At that point, the worm bin, which isn't visible to toilet users, must be emptied.
It's not a terrible job — "you don’t have to handle sludge," Oak said.
Simply remove the lid of the toilet, exposing the top layer of worm castings — their leftovers from years of hard work. Then shovel it out and use it in a garden as fertilizer. Then the worm population will be ready to work again.
(...)
"Users find the toilets preferable to traditional latrines,” USAID wrote of the toilets during field testing in 2015. "Because the worms break down the solid waste, the toilets emit fewer odors and attract fewer flies than traditional latrines."
Und neben geretteten Leben durch bessere Hygienespringt auch noch ordentlich Kohle bei raus:
Bill Gates recently told a crowd in Beijing that he's ready to spend an additional $200 million developing technology for next-generation toilets like these that can operate without mainframe sewer systems.
"We estimate that by 2030, the opportunity here is over $6 billion a year," Gates said.
Aus Scheiße Geld machen, so geht's. Hut ab.
.
***Diese Nachricht wurde von membran am 27.11.2019 13:17 bearbeitet.***