What is the purpose of adding aluminum salts and a base to water during water treatment?
A)The two together gel and trap dirt and bacteria.
B)The higher pH kills bacteria.
C)The aluminum removes the rust taste from the water.
D)The base dissolves the dirt.
E)It improves the taste.

Question

Quizplus · Accepted Answer

The purpose of adding aluminum salts and a base to water during water treatment is to gel together and trap dirt and bacteria. The aluminum salts are coagulants that neutralize the electrical charges on particles in the water, causing them to clump together and form larger particles. The base, usually sodium hydroxide, raises the pH level of the water, which aids in the coagulation process. These larger particles can then be easily removed through filtration or settling, resulting in cleaner, clearer water.

What Is the Purpose of Adding Aluminum Salts and a Base