Which filtration methods remove heavy metals from water?

Filtration Methods for Heavy Metal Removal

Activated carbon filtration is a simple and cost-effective method for removing heavy metals from water. It works by adsorbing heavy metal ions onto the carbon’s surface, effectively neutralizing them. A good quality activated carbon filter can remove up to 99% of heavy metals, including lead, mercury, and arsenic.

Advanced Filtration Techniques

Reverse osmosis is a more advanced filtration method that uses a semipermeable membrane to separate heavy metal ions from water. This process forces water through tiny pores, trapping heavy metal ions and other contaminants. Reverse osmosis systems can remove up to 99.9% of heavy metals, as well as other impurities like bacteria and viruses.

Ion Exchange and Additional Considerations

Ion exchange systems use resin to remove heavy metal ions from water. These systems work by exchanging sodium or potassium ions for heavy metal ions in the water. Ion exchange systems can remove up to 95% of heavy metals, but may require periodic regeneration to maintain effectiveness. When selecting a filtration method, consider the type and concentration of heavy metals present, as well as the desired level of removal.