Rock And Sand Water Filter

As water flows slowly through the sand these organisms form a biofilm that traps and consumes other micro organisms including those that make people sick.

Rock and sand water filter.

Then after constructing the filter he continued to filter some dirty water and commented that the first little bit is going to be nasty since its getting the dirt off the sand and rocks in the filter. Very little of the water we use every day comes out of the ground completely pure. Lab effectiveness field effectiveness and health impact. Saw a video on youtube where some guy made a water filter out of a bottle charcoal sand and little rocks.

Some of the impurities are microscopic but many are large enough to remove with a crude filtration system that you can make yourself using sand and rocks. Slow sand filter lab effectiveness studies with a mature biolayer have shown 99 98 protozoan 90 99 bacterial and variable viral reduction. He commented that since the charcoal is very porous it s great for filtering. If you choose to create a sand filter you have the option of making a slow or fast filtration system both of which are effective.

In recent history the past 150 to 200 years it.