Koch Membrane Systems Inc. introduces the latest evolution of PURON submerged hollow fiber (HF) modules. The PURON HF module is designed for tertiary treatment, high solids water applications, RO pretreatment and surface water treatment. Based on the same single-header, central aeration design as the membrane bioreactor module, the HF module produces consistent, high-quality effluent that meets or exceeds most regulatory requirements. With a packing density increase of more than 44% and PVDF fibers, the product offers a reduced system footprint, high flux, and lower capital costs.