Answer: Sand, anthracite, and garnet are all frequently used as filter material for water treatment.
Step-by-step explanation:
Filtration: It is the process by which fine floc particles, color, dissolved minerals and micro-organisms are removed. It also removes suspended solids that do not get removed in sedimentation and it is also economically effective.
The following different types of material are used for water filtration process:
Carbon or activated carbon: Carbon is also known as charcoal. Anthracite is mostly used for water filtration.
Garnet sand ( chemically inert or non metallic mineral) is an ideal water filter media.