Question

How does chlorination differ from filtration?​

Answer 1

Answer:

Chlorination can be achieved by using liquefied chlorine gas, sodium hypochlorite solution or calcium hypochlorite granules and on-site chlorine generators (e.g. WATA). Chlorine is widely applied for the centralised disinfection of drinking water in municipal water supply systems

Answer 2

The difference between the two is not simply a matter of the filtration speed, but of the underlying concept of the treatment process. Slow sand filtration is essentially a biological process whereas rapid sand filtration is a physical treatment process (WHO n.y.).