You can also find KOSEN’s products in water and waste water treatment plants, there are basicly five primary steps for water treatment
Chlorine is added to the water for disinfection
Coagulation and flocculation
Alum is added in proportion to the river turbidity to form floc particles created from the suspended materials in the water
The water travels through sedimentation basins where the heavier material settles. Coagulation and flocculation remove turbidity as well as metals, including arsenic
Following sedimentation, the water travels through an extensive filtration process that removes sediment and other suspended materials.
At the end of the treatment process, PH is adjusted with caustic soda (NaOH) to reduce corrosion in plumbing systems.