To meet the increasing demands for clean drinking water, many municipalities are looking at solutions beyond what was previously accessible or considered conventional. Many are turning to water reuse as a sustainable means of securing a local, drought-proof, and safe water supply.
What is Potable Reuse?
Potable reuse is the process of recycling wastewater for the augmentation of drinking water supplies.
There are two main methods of potable reuse:
- Indirect potable reuse (IPR): which treats water for the replenishment of groundwater supplies (indirectly back to drinking water)
- Direct potable reuse (DPR), which adds the highly treated water directly into drinking water reservoirs or into the drinking water network.
UV as Part of “Full Advanced Treatment”
UV-oxidation, UV-photolysis and disinfection are key elements in the potable reuse treatment scheme and ensures the highest quality water is produced – water that exceeds the standards for drinking water supplies.
When treating wastewater for potable reuse, advanced processes including Microfiltration, Reverse Osmosis (RO) and UV-oxidation have set the standard. When used in combination, they ensure the highest quality water is produced – exceeding drinking water quality standards.
UV’s role in this process is to destroy low-molecular-weight contaminants that can pass through RO membranes, such as 1,4-dioxane, nitrosamines (e.g., NDMA), pharmaceuticals, endocrine disruptor chemicals or industrial solvents. Simultaneously it provides final disinfection to inactivate a broad range of bacteria, protozoa and viruses.