A flow-through adsorption filter removes contaminants dissolved in water with the special material — adsorbent.
In water treatment, activated carbon is the most common adsorbent. Carbon easily deals with chlorine and organochlorine, pesticides, oil products, etc. In under-counter systems, it takes the form of a dense carbon block.
There are other types of adsorbents: for example, ion-exchange resin, which reduces the water hardness by exchanging ions of Ca and Mg for the “neutral” Na.
Teilehaus filters also have a specially designed ion-exchange fiber for the heavy metals removal.
Fine filters combine a variety of sorbents and technologies to accommodate different needs and tap water problems.