Innovations in Clean Water Technology: Desalination


One of the leading solutions to the urgent need for drinkable water in many areas of the world is desalination. One of the leaders in this technology is the lab of John Lienhard V, Collins Professor of Mechanical Engineering, Massachusetts Institute of Technology. Professor Lienhard explains the different types of desalination and the recent developments that make this technology so promising.

This talk was taped December 20, 2011.…

Clean Water Has Bugs In It – Stoneflies and Water Quality


Clean water has bugs in it, says BYU Biology Professor Riley Nelson
Stoneflies used as a tool to monitor water quality

To fishermen, a stonefly is "bait," the kind that brings in the trophy fish. But to entomologist Riley Nelson, the stonefly is an important environmental indicator. If you see stoneflies in a river or stream, he says, the water is good.

"Of all the insects that live in water, stoneflies are the kind that require the cleanest water," says Nelson, a Brigham Young University professor of biology. "Most people would be surprised to find out how many beautiful insects …

Primitive technology with survival skills build a water filter tank part 3


Hi. Primitive technology with survival skills builds a water filter tank part 3 is our next video. In this video we finished building a water filter tank. By the primitive technology we have filtered clean water from the tank, initially we make charcoal then go to streams for sand and stones. Charcoal can eliminate toxins and bacteria, rocks and sand that cleanse water. We let the charcoal make the first layer followed by stone and sand, large stones at the top. It takes 1 hour for water to be purified. We will continue to make the next video on primitive …