Sedimentation is a primary water treatment process. It is used to remove large particles from water, such as sand, silt, and clay. Sedimentation is a physical process that relies on gravity to separate the particles from the water. The water is passed through a tank or basin, where the particles settle to the bottom. The clear water is then removed from the top of the tank.
Primary water treatment is the first step in the process of making water safe to drink. It is used to remove large particles, organic matter, and some bacteria from the water. Primary water treatment typically includes sedimentation, filtration, and disinfection.
Secondary water treatment is the second step in the process of making water safe to drink. It is used to remove dissolved organic matter and bacteria from the water. Secondary water treatment typically includes filtration, chlorination, and aeration.
Tertiary water treatment is the third step in the process of making water safe to drink. It is used to remove specific contaminants, such as nutrients, metals, and pesticides, from the water. Tertiary water treatment is not always necessary, but it may be required for water that is to be used for drinking, irrigation, or industrial purposes.
The final process in the treatment of water is disinfection. This is done to kill any remaining bacteria or viruses in the water. Disinfection can be done using a variety of methods, including chlorination, ultraviolet light, and ozone.