Ultrafiltration (UF) membrane systems are an attractive technology for groundwater and surface water treatment. Proper system design is especially critical in surface waters with higher levels of organic and solid materials. For these difficult waters, membrane filtration is often substantially improved through effective pretreatment and maintenanc...

This paper gives a case study to highlight membranes in mining applications, with a discussion of process considerations including pretreatment chemistry and contaminant speciation. Equipment design concepts are also explored....

The Surface Water and Treatment System facility consists of lime-softened clarification, dual media filtration, ultrafiltration membrane filtration, and reverse osmosis (RO) membrane treatment. This system treats water from Lake Granbury in Granbury, Texas, which has elevated levels of chlorides ranging from 50 to 1,400 mg/L. As designed, the syste...

As UF/MF membrane modules reach the end of their useful life, end-users have more options than ever before to either purchase direct module replacements or upgrade the system. Recent trends and advancements in membrane materials, configuration, and process design have improved the performance of low pressure membrane systems. With more options for ...

This presentation is about a 2.9 MGD UF/RO project for the purpose of removing selenium from a mine-influenced surface water. It's important because of the limited published work regarding UF/RO application for selenium rejection, and the use of an open-platform UF system in an industrial application, which is one of if not the first documented ins...

This abstract will discuss background information to provide context for arsenic removal from a regulatory and health perspective, as well as a brief overview of alternate treatment methods. This paper should be added to the program because extensive operating data and results from three full-scale sites across two distinctly different industrial a...