CFD Modeling Studies and Empirical Comparison of Performance in 3D Printed Spacers in Spiral Wound Membrane Elements
Conventional plastic mesh material has been utilized as the feed spacer between spiral wound membranes sheets since they were invented. Under a grant from the Defense Advanced Research Projects Agency […]
Water Quality, The Forgotten Secret to System Optimization
When reverse osmosis (RO) and nanofiltration (NF) systems are designed, the water quality is the most crucial piece of information. It is the deciding factor for which membranes will be […]
Flow-Reversal High-Recovery RO Resolved Water Quality Issues & Created Savings in Industrial Applications
Treatment processes almost always involve Reverse Osmosis (RO). RO provides the physical barrier needed to remove multiple contaminants, facilitate regulatory compliance, and over the years, has gained the trust of […]
Ceramic Membrane Microfiltration Allows Reuse of Challenging Wastewaters at Two U.S. Locations
Though 2017 was a wet year for the southwest U.S., drought conditions resumed in 2018 and continue through today [Heim (2021)], resulting in a water shortage that is forcing industries […]
Marker Based DIT Now in Commercial Use
Filtration with Inside-to-Out Ultrafiltration Membranes of Wastewater Containing Powdered Actgivated Carbon
This study presents and compares results obtained with inside-to-out polyethersulfone ultrafiltration membranes operated on three different wastewater streams in two locations. The first stream tested originated from a wastewater containing […]
PFAs Rejection by NF and RO as a Function of Speciation, Membrane Characteristics and Recovery
Academic research on the use of flat-sheet coupons of NF and RO membranes at bench scale for removal of PFAS dates back to 2006. Tang et. al (2006) investigated removal […]
Optimizing Membrane Filtration Systems Through the Application of Digital Twins
This paper provides two project case studies, City of Spokane and Gwinnett County, where dynamic simulation was used to assist with the design and optimization of membrane facilities. The City […]
Pilot Study Results of New High Surface Area UF Module at Clifton Water District
The goal of membrane development in water treatment has historically been to treat more water or wastewater in a smaller footprint. Pioneering Reverse Osmosis (RO) membrane manufacturers originally started out […]
What is a Contractor’s Role in an Alternative Delivery Project Mebrane Selection?
Water and wastewater projects that incorporate complex systems or anchor process equipment can quickly face schedule and cost delays during the design and construction. This complexity lends itself well to […]
