posted on Oct, 12 2009 @ 12:49 AM
Using Diatomaceous Earth, Sand, Silver Mesh, and homemade Activated Charcoal inexpensive high volume water filters can be no prolem for extensive
Please do add any other potantial filter stage elements that would fit here!
Diatomaceous Earth (DE):
Microscopic fossils with amazing capabilities. You can
drink it to annihilate internal parasites, dust your garden for the ultimate organic pesticide, and use it for large scale water purification. One
pound can treat many thousands of gallons. In fact, there are
municipal DE water purification plants in the
US. The major downside is you cant expect to dig this stuff up as you need it.
Cost: My initial searches have it as low as 50lb bags at $50.
Silver has unique inherent antibacterial & antimicrobial properties. It also
helps reduce slime buildup. So this is obviously an ideal substrate for screening purposes in the different filter elements, but I also see the
potential for a special filter stage consisting of many layers of silver mesh. If we can find pure silver mesh then obviously you could bake it to
help clean it better for resuse. Of course, if you have actual silver (coins, jewelry) you could have a chamber filled with silver bits.
Costs: I havent yet tracked down pure silver mesh, but have found silver coated nylon mesh at about $4 per
square foot. Pure silver is spot priced at just under $20 per ounce these days.
Sand beds are another key municipal water filitration
method. But the sand needs to be very fine and not saline. Sifting screens (which have many other food and chemistry uses) can be used to process your
own sand, and a hydrometer (needed for measuring salt levels in marine aquaria) can be used to measure salinity, but a good glass type will be needed
above the cheap plastic ones for best results. Of course you can always buy sand of this grade.
Costs: Sand - depends, but cheap. Hydrometer -