What does water filtration mean in practice?
The scope of filtration always depends on the barrier or medium used: a mechanical filter will retain suspended solids but will not remove dissolved salts.
When does it matter?
Confusing filtration with full treatment leads to the selection of a device that improves the appearance of water, but does not solve its actual problem.
Which solutions are related to it?
First the water composition and the required effect are determined, then mechanical filtration, adsorption, ion exchange, membranes or disinfection are combined.