Assessment of Selected Methodologies for Monitoring the Integrity of Reverse Osmosis Membranes for Water Recycling
Date: December 10, 2015
Related Research: Project 12-07
In water recycling applications, the prevention of microbial-related disease is of utmost importance because of the acute nature of infection of waterborne pathogens and the potential for rapid spread throughout the population. Consequently, when evaluating treatment processes employed in water reuse scenarios, focus on the removal of microorganisms is both warranted and necessary. Further, as interest in both indirect and direct potable reuse increases, the need for protection from potential microbial disease transmission via water reuse has become even more pronounced. Today, microbial protection is often measured in terms of the capability of treatment processes to remove pathogens. The concept of achieving a target log removal value of microorganisms is commonly practiced today for demonstration of process efficacy. However, in many instances, only a 2 log virus removal credit is granted for this process since there is currently no efficacious practical method to monitor for RO membrane integrity when greater virus removal is demonstrated. The objective of this presentation is to present results from a WRRF study on the evaluation of RO membrane integrity techniques. Discussion will focus on: 1) results from a literature review on state of the art techniques; 2) outcomes from a stakeholder workshop on RO integrity monitoring; and 3) bench and pilot scale results.
Dr. Joe Jacangelo is a Vice President and Director of Research for MWH. He has over 25 years of experience in the field of environmental health engineering, and has specialized in the areas of water quality and treatment, water and wastewater disinfection, membrane technology and public health.
Professor Stephen Gray has been the Director of the Institute for Sustainability and Innovation (ISI) since 2006. He previously worked at CSIRO for 16 years in the areas of water treatment, integrated water management and sustainable water technologies.