Water for the people
Finally, back from summer vacation. Which was indeed nice. But we got a gap in this blog, which isn’t as nice. Anyway, as most of the people living in Karlskrona my vacation was centered around water.
This is one of the reasons this post will feature just water, the elixir of life!
Early summer I attended an event called Miljödagarna, and it was my home town Karlskrona that hosted the event. Since Karlskrona is a city located on an island in a beautiful archipelago the theme of this year's Miljödagarna was water.
Among all the things I heard during the day I was glad to hear the Swedish secretary of state Gunilla G Ericson told us that the government prioritizes the investment in the environment. The most important areas were climate, oceans/seas, biodiversity and a toxic free environment.
But back to water!
Did you know that there are about 50 times more saltwater then freshwater on our planet? (1)
Two of the problem with saltwater is that we can’t drink it to survive and we can’t water our plants with it.
As most of you know the water issue has become a pressing global threat. Thanks to the climate change some parts of the planet has torrential flooding's, some have terrible drought, we have rising sea levels and if you take the threat of overpopulation in account the demand of freshwater goes up as one of the most important issues for survival. (2)
Enter “Reverse osmosis desalination”!
What is that you ask?
Well I have the answer right here.
Reverse osmosis desalination is a process where you take water from the ocean and, simply put, remove enough salt from it to make it drinkable. (2)
The largest desalination plant in the world at writing moment is the Ras Al Khair in Saudi Arabia which supplies 1 million cubic meters of drinking water every day(!), partly uses this technique. (3)
This is amazing, why don’t all countries have a desalination plant?
Well, the Ras Al Khair uses about 2400 MW of power to process that amount of water. (3)
Which is a lot of power, but the cost of sea water desalination is going down. A lot thanks to just reverse osmosis. (4)
But what about the developing countries that can’t afford a gigantic desalination plant, what can they do?
Well, I came across an article about an article from 2016 about a company called Maji Safi Internation LLC. Founded by three engineers with the goal to develop a low-cost, low-maintenance process to deliver clean water to developing countries around the world. (5)
Need I say that the succeeded?
The technology uses a slow sand water filter which is placed in a 55-gallon (about 200L) drum, each drum filter can process 200 liters of water each day. With five filters installed at one school they can cover the needs of over 400 children and teachers at a school every day!
The cost for one filter in Kenya is around $50, with labor and transportation as additional costs, but the filter will last for five to ten years. (5)
The company is seeking support and sponsors to help people get clean water all around the world.
With the help of technology and good people with an idea or a vision I think that the world can take a turn for the better no matter what area.
Let’s see what we can do!