BIO SAND -WATER FILTERATION FOR FLOOD VICTIMS.

WATER FILTRATION FOR UNDER PKR 890/-(US$10)

There are two steps to making water safe to drink. The first step is to filter the water. The second step is to disinfect the water. Charcoal is a valuable ingredient in water filtration.

To make a simple charcoal water filter, select a clean container with a hole in the bottom. Place a single thickness, clean cotton cloth in the bottom of the container and then add a layer of fine gravel (or coarse sand). On top of this, alternate layers of charcoal and sand until the bucket is 2/3 full. Place a larger piece of thin cloth over the top of the container and secure it as a strainer to keep large particles out of your filter when water is poured through it. Illustration courtesy of http://quest.arc.nasa.gov/test/speakersnotes/ITP/912/examples_spsci.html.

Select another wide-mouthed clean container. Fit it with a lid that has a hole matching the one on the bottom of your filter. Set your homemade filter on the lid of your bottom container, which will hold the filtered water. Pour water into the filter and wait for it to drip into the lower container. The resulting water is filtered, but bacteria may still be present. You will need to disinfect your filtered water by boiling, adding chlorine, using the sun, or some other method. If boiling is used, the water should be boiled for ten minutes.

A variation of this method can be utilized for household filtration using a disinfected watertight drum. Washed gravel is placed on the bottom, followed by a layer of fine cloth and alternating layers of clean sand and charcoal topped with another layer of fine cloth. Water is poured through an opening in the lid of the barrel and collected after it passes through all of the layers. An old dinner plate can be placed on top of the sand just below the opening in the lid to stop erosion. An example of such a drum is shown. See this site for more detailed instructions:
http://www.hesperian.info/assets/EHB/06_Chapter6.pdf
Illustration courtesy of http://tilz.tearfund.org/Publications/Footsteps+31-40/Footsteps+34/Letters.htm.

"ACTIONS ARE 

LOUDER THEN WORDS"

This Youtube Video shows that how you can make your own  BIO SAND Filter for a very little investment & turn muddy flood water into drinkable germ free water.

Watch & Learn..................