distillation
Distillation is one, and reverse osmosis is another.
the method of purifying water in filter bed?
It is Photosynthesis
The method for purifying the water in a filter bed is called filtration.
Filtering
The method of purifying the water in a filter bed is called slow sand filtration.
how does water purifing
sexy
The action of purifying a liquid by a process of heating and cooling.
DISTILLATION
charcoal