Last Wednesday the 22nd of March, the UN celebrated the World Water day. Many take drinking water for granted, but there are still 1.8 billion people in the world who use a source of drinking water that puts them at risk of getting deadly sick. In the driest and poorest regions of the world, women and girls walk for hours in the blistering heat to collect water for their families –withholding them from studying or working. Addressing the drinking water crisis of those regions can solve many problems at once.
The ABC of climate change: Deforestation
Deforestation is the process whereby natural forests are cleared through logging and/or burning, either to use the timber or to replace the area for alternative uses such as agriculture or urbanisation. The FAO estimates 12-15 million hectares of forest are lost each year, the equivalent of 36 football fields per minute.
TIP: if you’re in a hurry, you find a summarizing infographic at the end of this post
Photo of the Week: the Rain maker
We write December 2015, with the new year around the corner. Yet, still 780 million people around the world have no access to clean and safe drinking water. That is 1 out of 9! Since many communities life at or near the shore, the vast amount of seawater nearby plead to be turned into the source of life. Until now various machines have been proposed to take the salt out of seawater. This desalination process happens to be expensive, both money and energy wise.
The best solutions to difficult problems are often found in nature. Same goes for the Rain Maker, the desalination machine that mimics the natural water cycle. It heats seawater until it vaporises. The water vapour is taken into another compartment to be distilled. Then the steam is cooled down and turns into water again. Via a smart design, most of the heat is recuperated.
No membranes or filters are used, making the device able to run on its own for months without human intervention. A machine the size of a small car can make more than 3500 litres of water an hour.
By building small units that can be mass produced, the price is reduced enormously. Depending on the specific needs, more or less Rain Makers can be combined. This makes a desalination machine finally cost effective. Current massive plants are designed case by case and just cost too much money. The builders of Rain Maker even propose to build a ship full of their desalinators. When a coastal area faces a water crisis, the ship rushes to the spot and can start producing clean drinking water straight away and pump it to the shore.
Showcased in Billions in Change documentary
Photo of the week: The Desolenator
Desalination of water usually is an energy-intensive and expensive process. The Desolenator is aiming to change that: it’s a cheap and easy-to-use solution to produce clean drinking water in regions where water scarcity is a problem. With the sun as only driving force, this piece of engineering is able to produce up to 15litres of clean water a day – enough for cooking and drinking of a small family. Not only salt water but also contaminated and dirty water can be transformed. The contaminated water is first heated up by the sun until it reaches boiling temperature, then electricity generated by the soler panel is used to boil it further and to vaporize the water. The condensed vapor is safe to drink. The Desolelanor has a price tag of 450$ but the team is working hard to get the price down so it becomes affordable for families who lack access to clean water. CEO Janssen: “… [water scarity, red.] will get worse—by 2025, close to 3 billion people will deal with water scarcity daily. We want to give them something that’s an affordable, family-sized device.”
Find out more: desolenator.com