Advanced water treatment pertains to the level of water treatment that requires a high percentage reduction in pollutant concentration, also known as tertiary treatment. This process allows for the safe return of water to the environment and further treated to be suitable for consumption. In order to produce water that meets these criteria, it must undergo a multi-step process that includes water treatment systems such as ultrafiltration, reverse osmosis, and ultraviolet disinfection. Advanced water treatment is generally needed for water sources that contain extremely high levels of contaminants such as wastewater.
Ultrafiltration works as pretreatment in eliminating sediments, particles, and microorganisms from the treated wastewater. The wastewater is treated through Uf membrane filtration technology that acts as a filter to larger particles that can not pass through the small pores within the membranes. What’s left of the treated effluent after the ultrafiltration process are organic substances and dissolved salts that make it through to the second phase of the advanced treatment process.
The treated water is now forced through the reverse osmosis system that contains semi-permeable membranes that separate the water molecules from any left-over (smaller) organic substances, dissolved salts, bacteria, viruses, pesticides, and other unwanted contaminants. This is done through layers of RO membranes that act as microscopic filtration technology.
The last phase of the advanced water treatment process is ultraviolet sterilizers that act as a final step to disinfect all remaining pollutants in the product water. The UV water treatment process is mainly used as the last safeguard against harmful substances making it into the produced water. It ensures that the finished water is at maximum quality and safe for consumption or other applications.