How Advanced Water Purification Works
The water first passes through a series of membranes that separate molecules of different sizes and characteristics, effectively removing many impurities. The membrane wall is densely covered with micropores.
Membrane Filtration
A robust treatment train can turn secondary effluent into drinking water
Reverse osmosis uses a semi-permeable membrane to separate water molecules from other substances. It applies pressure to remove dissolved or suspended chemicals as well as biological substances, like bacteria.
Reverse Osmosis
Ultraviolet light, or UV, uses radiation to disinfect. As water passes through a tube, it is exposed to UV, which kills microbes. The UV advanced oxidation process is used to reduce low-molecular-weight contaminants that can pass through reverse osmosis membranes, such as pharmaceuticals, endocrine disruptor chemicals and industrial solvents.
Advanced oxidation with ultraviolet light and hydrogen peroxide
The quenching of residual hydrogen peroxide and the removal of PFAS contaminants are two of the biggest operational challenges of a wastewater treatment plant. Effective quenching is particularly important for drinking water treatment and granular activated carbon is widely used for this purpose.
Granular activated carbon for peroxide quenching/PFAS removal
Chlorine is added to drinking water to kill parasites, bacteria and viruses. Different processes can be used to achieve safe levels of chlorine in drinking water. Using or drinking water with small amounts of chlorine does not cause harmful health effects and provides protection against waterborne disease outbreaks.
Chlorine Disinfection
