What about homemade home water filters?
I know the soldiers in the field to find a first filtering container clean stone in the stone sand and then put the container make a small hole to let the water out on some carbon above, but not always drink to burn your family seems to need is a stone size and then drink carbon sand filtration effect of some
Material: pop top, gauze, absorbent cotton, activated carbon, sandSteps: 1, cut top cans, kegs form2, at the bottom of the pop can make small holes3, the gauze shop at the bottom of the cans, shop a few layers, to ensure that the gauze and the tank wall does not leave a gap4. Place the absorbent cotton in the can and completely cover the gauze. Absorbent cotton should be about 4 centimeters thick or so5, on the absorbent cotton and then covered with two layers of gauze6, put the activated carbon on the gauze, if there is no activated carbon, charcoal can also be. Place 3cm thick around
With a 20 liter tank on the line, the following coir mat, coarse sand, fine sand, respectively according to the above fine gravel, activated carbon, brown skin layer two can be put in order to play the role of filtering, it is only for the impurities in the water have no effect, what effect on pathogenic bacteria.
