July 29, 2004
Recently, municipalities around the world have begun to use
chloramine (a mixture of chlorine and ammonia) to disinfect water. This
is done to reduce free chlorine’s ability to combine with organic matter
in the water thereby producing potentially harmful trihalomethanes, or
THMs. Because chloramine has less disinfecting ability than free chlorine,
a higher concentration of chlorine is usually used to [...]
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July 29, 2004
Carbon has long been used to absorb
impurities and is perhaps the most powerful absorbent known. Activated
carbon is carbon which has a slight electro-positive charge added to it,
making it even more attractive to chemicals and impurities. As the water
passes over the positively charged carbon surface, the negative ions of
the contaminants are drawn to the surface [...]
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