Reverse Osmosis (RO) and Nanofiltration (NF) basics and a comparison between the two membrane processes. Introduction to technical terms used in describing these two membrane processes and characterizing performance....

Integrity testing for Microfiltration (MF) and Ultrafiltration (UF) membranes and reasons for conducting test. Direct and indirect testing techniques and how to interpret results. Designing to avoid membrane integrity failures and factors that impact integrity loss....

Contaminates of Emerging Concern (CEC) relative to human and aquatic health impacts. Recommendations for monitoring. Membranes to the rescue. CECs removal studies for the effectiveness of a wide range of processes....

Three case studies using coagulation with Microfiltration (MF) potable water applications. Bench test at the Olga WTP, Lee County, FL with Microfiltration (MF). Pilot study using Microfiltration (MF) in treating Columbia River water at the WTP for City of Pasco, WA. Full-scale test using immersed Microfiltration (MF) in treating Santiam River wa...

The results of evaluating submerged Microfiltration (MF) membranes after several years of problematic operation. The system was designed to replace granular media filtration at City of Kennewick WA WTP treating Columbia River water. The labor intensive process required to install pins isolating failed microfiltration hollow fibers increased to the...

Membrane Bioreactor basics and a comparison between hollow fiber and flat sheet. Introduction to terminology used in describing the MBR systems and characterizing performance in WWTP applications....

Sustainable Microfiltration (MF) and Ultrafiltration (UF) operation achieved in five steps. 1. Membrane selection. 2. Proper procure document. 3. Conservative system design. 4. Proper installation and startup. 5. Proactive operation and performance monitoring....

City of St. Helens, OR pre-selected pressure membrane filtration over conventional filtration and other options to reliably meet long-term potable regulatory compliance. Qualifying 3 manufactures, Microfiltration (MF) was piloted concurrent with procurement accelerating schedule to 18 months. The MF supplier was selected on life-cycle cost and O&M...

Design, construction and startup of Membrane Bioreactor (MBR) at the Tri-City Water Pollution control Plant (WPCP) Oregon facility....

Sand filtration vs. membrane filtration is not necessarily an ?out with the old and in with the new?. Comparing a unique combination of the oldest and the newest filtration technologies operated side by side and discovering that employing two very different treatment processes is actually advantageous, not a burden. At the North Clackamas County...

This presentation provides an overview of the regulations concerning approval and operations of membrane treatment technologies in Oregon....

Why backwashing and/or air scrubbing (scouring) alone is not always effective and efficient in cleaning Microfiltration (MF) and Ultrafiltration (UF) membranes. How membrane types and material influence chemicals and procedures. Intermittent chemical enhanced backwash (CEB) can extend time between rigorous clean in place (CIP) requirements. The a...

Membrane Bioreactor (MBR) air scour efficiency, bubble vs. plug flow modeling case study, Modesto, CA....

Brief review of Reverse Osmosis (RO) and Nanofiltration (NF) membrane basics. Overview of regulations in conjunction with the Surface Water Treatment Rules LT2 Update. And a discussion of RO / NF pathogen removal. The 2005 understanding, 2007 understanding and application of the LT2 update in 2010....

Basic review of Microfiltration (MF) and Ultrafiltration (UF). The application and cost of low pressure membrane technologies....