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...

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

The saga of planning a membrane softening (MS) / nanofiltration (NF) WTP in the Ohio central city of Marysville to augment an existing lime soda softening facility. Investigation of surface discharge proved not practical because of outside the zone average (OMZA) targets set by Ohio EPA. This necessitated designing and permitting deep wells for ...

The case study of the 6 year project for the Tate Monroe Water Assoc. Inc. membrane softening (MS) / nanofiltration (NF) WTP at Freedom Crossing, OH. Comparing piloting results and operating results for the extra-large 18? dia., selected in lieu of the standard 8? dia. membrane elements. Large membranes for a small plant. Also included is the p...

Case study of operating costs for Minster, OH membrane softening (MS) / nanofiltration (NF) WTP. Treatment O&M cost by category i.e. chemicals, electric, engineering services, labor, membrane replacement, etc. Membrane specific O&M cost by Components....

This presentation elaborates on functions and construction principles of Ultrafiltration and Microfiltration. These membrane processes reject particles, pathogens, high molecular weight species, and ultimately, lower turbidity. However, UF and MF do not reject any dissolved salts, dissolved organics, or other species like true color and taste & ...

This presentation provides an overview of feasibility and planning costs for various membrane applications and provides capital and membrane operations and maintenance cost guidelines. A consideration of predictable and unpredictable cost factors, along with cost savings provisions and tips for determining ?Best Value? is included. In addition, ...

This presentation provides a comparison between Microfiltration and Ultrafiltration membrane systems and provides an overview of manufacturers, relevant definitions and guidelines for major design issues. Considerations about pilot testing and advantages to Owner/Engineer in selecting membrane system prior to plant design is included in the prese...

This presentation provides a detailed time line and step by step pictorial presentation of a membrane plant upgrade process for City of West Carrollton....

This presentation provides a comprehensive overview of Membrane Permitting Process Requirements and provides recommendations for step-by-step considerations for addressing challenges associated with obtaining the required permits for disposal of concentrate waste streams....

This presentation provides an overview of materials of construction, pore sizes, pressurized versus submersible membranes and certifications for Microfiltration and Ultrafiltration Membranes....

This presentation provides an overview of membrane filters and explains commonalities and differences between submerged and pressure membrane applications. Factors presented include pressure requirements, packing density, footprint, and hydraulic considerations....

The case study of the 7.7 MGD Northern Area Water Auth. membrane softening (MS) / nanofiltration (NF) WTP at Tipp City, OH. Surface water NPDES discharge concentrate disposal to the Great Miami River, a state scenic river. Discussion includes both design and construction with addition of operating information and cost....

This presentation describes various membrane applications and elaborate on how low pressure membranes (MF, UF & MBR) can effectively be utilized for surface water treatment, ground water under Influence, wastewater treatment and other applications; and high pressure desalting membranes (NF & RO) can be used for brackish and sea water desalination ...