- 10:00 sleep prep
- 01:50 material prep
- 01:55 1st round invoice
- 02:00 观呼吸,休息…
- Too few toilets
- 4.4 billion people — more than half the world — cannot safely and cleanly dispose of their bodily wastes.
- a system of pipes
- sewer system
- a treatment plant
- septic tanks
- fresh, drinkable water down the drain every day.
- sanitation chain
- In an ideal world, he says, toilets would use much less water — maybe none at all.
- make money from poop.
- black soldier flyies
Out of many people’s mind, nearly half of the world people are shor of flush toilet. They use dry toilet or just poop outside the houses. The feces will directly contact with earth and water, which fertilized lots of mirco lifes. Unfornately, some of the thriving life are death threatening to the fece’s owner, we human beings.
The reason of the flushing system shortage is extremely simple, the money. Morden dranige system builds on expensive pipelines and massive sewer system. It is such a super huge project that very few city can afford. Beyond thousands of pipes and pools, fresh and drinkable water is the fuel to keep the system working. The water is exactly expensive thing in most area of earth.
So although flush toilet can bring good sanitation to human beings, we still can not afford it for every humans. Good news come with one special species, the flyies. Entrepurners in kennya has built a treatment plan for tons of dustry waste. They use flyies to eat poop, and then burn the flyies into dush, a safe fertilizer for the ground. Another company in south Africa seperate poop from the pee. With amout of dry poop, they convert poop into burning material like a coal.
Water and pipe is no longer the determinant to good sanitation.Flyies and human wisdom can also bring us a good life.