Can Aluminium Sulfate Be Used In Water Treatment?

Yes, aluminum sulfate (Al2(SO4)3), also known as alum, can be used in water treatment.

Alum is commonly used as a coagulant in the treatment of drinking water and wastewater. When added to water, it reacts with the natural alkalinity of the water to form a gelatinous precipitate, which attracts and binds to impurities such as suspended solids, bacteria, and viruses. The impurities are then removed from the water through processes like sedimentation and filtration.

The use of alum in water treatment has been shown to be effective in removing turbidity, color, organic matter, and microorganisms from water. It is also relatively inexpensive compared to other coagulants and is readily available.

However, the use of alum in water treatment can have some drawbacks. One potential issue is that excess alum can remain in the treated water, leading to an increase in dissolved aluminum levels. This can potentially cause health problems for some individuals, particularly those with kidney disease. Additionally, alum can contribute to the formation of disinfection by-products, which can be harmful to human health.

Overall, while aluminum sulfate can be used in water treatment, its use must be carefully monitored to ensure that it is used in appropriate quantities and that any potential health risks associated with its use are minimized.