Coagulants are widely used to purify drinking water and clean the wastewater produced in industrial processes.

In the paper industry, coagulants have applications in the sizing and retention parts of the papermaking process.

Coagulants also have an important role in the treatment of water both before and after it is used in industry. Inorganic coagulants (particularly those containing ferrous sulphate) also have important applications in the agricultural and cement sectors.

There are also many other applications where aluminium and iron salts have an indispensible role.