Swimming in pools treated with chlorine gives our
eyes a sting.
A British firm has found an alternative
which involves electrolyzing the water
using two electrodes made of silver-copper alloy.
The process of electrolysis releases copper and
silver ions.
Silver ions kill bacteria and copper ions kills
algae.
As the dead bacteria and algae are charged, they
clump together forming
solids which can be removed by filtration.
Other alternatives to chlorine are hydrogen peroxide
and ozone.