Water resources continue to be one of the top environmental concerns around the world, leading to increased water recycling efforts in water and wastewater treatment facilities globally and reducing the consumption of fresh water. Getting wastewater to an acceptable level of purification for water reuse can be challenging as it requires several steps. On the other hand, it is important to have access to pure drinking water free from suspended solids and harmful pathogens. Ultrafiltration (UF) has shown demonstrated success in both applications.

UF is a process using a physical barrier to separate water and suspended solids, turbidity, silt, bacteria, and viruses from the feed water. In a system using pressurized PureULTRA II hollow fiber modules, the feed water may come from different sources such as surface water, groundwater, secondary or tertiary treated industrial wastewater, or other sources like tertiary treated municipal wastewater.

PureULTRA II UF modules are constructed using highly hydrophilic modified PVDF hollow fiber membrane with a tight nominal pore size of 0.025 micron. The outside-in flow configuration contributes to easier cleaning as it keeps the solids, pathogens, and other foulants on the outside of the fibers. The fiber is designed to handle most feed water sources and tolerate solids loadings while operating within an optimal flux range. These fibers offer 30% higher fiber tensile strength and elongation compared to state-of-the-art fibers on the market. They reject particulate matter, Giardia cysts, and Cryptosporidium oocysts, and can help in virus removal.