Discussion of pretreatment, post treatment and cleaning chemicals in conjunction basic Reverse Osmosis (RO) and Nanofiltration (NF) systems...

This PowerPoint presentation discusses membrane fouling and methods to determine what the foulant is and how much fouling has occurred....

This paper details two retrofit case studies for systems located in the City of Toluca and the City of Macomb, Illinois, USA. A reverse osmosis system process or design retrofit is a truly viable option for municipalities that own and operate systems that are no longer performing as promised or as designed. Retrofits can offer very satisfying retur...

This presentation will focus on how the latest analytical tools are used to identify foulants on membrane surfaces and how the spacial orientation and deposition mechanisms help to predict future process changes. Examples of both spiral RO membranes and hollow fiber UF membranes are used to demonstrate how science provides the most reliable path fo...

Optimizing membrane performance has always involved looking at operations, system design, and process design as part of a typical troubleshooting approach. There are significant advancements in the realm of system diganostics and membrane perfomance analysis that further ensure an accurate and reliable outcome. This presentation will review some of...

Optimizing membrane performance has always involved looking at operations, system design, and process design as part of a typical troubleshooting approach. There are significant advancements in the realm of system diganostics and membrane perfomance analysis that further ensure an accurate and reliable outcome. This presentation will review how mem...

This presentation focuses on the types of fouling that are currently being experienced at a variety of MF/UF membrane plants in the Midwest. The discussion includes how the foulant materials are setting up in the MF/UF membrane elements and how the autopsy process is being used to identify foulants and provide solutions for their removal. Several ...

This presentation focuses on the different types of RO membrane pretreatment that have been used over the past 25 years in the Upper Midwest. The discussion covers both well water and surface water feed sources, and treatment processes such as UF/MF membranes, clarification/filtration, and iron/manganese management strategies. Case study examples a...