This presenation provides on overview of membranes used for water treatment. It includes a description of membrane configurations, membrane materials, removal mechanisms, and membrane structure for MF, UF, NF, and RO....

This presentation includes an overview of RO membrane fouling and scaling. It discusses biological, particulate, and inorganic fouling mechanisms and the chemistry driving scaling, antiscalant performance, and membrane cleaning. Complex interactions are discussed, including calcium bridging, chelating, and surfactant behavior....

Overview of Cape Fear Public Utility Authority nanofiltration facility built to address TOC, iron, manganese, hardness, and disinfection byproduct formation potential. 1.5 mgd facility operating at 80% recovery. Iron and manganese fouling addressed through improvements to cleaning process....

Provides an overview of post-treatment for brackish and seawater desalination, including comparison of corrosion indices, explanation of calcium carbonate chemistry, and discussion of alternative post-treatment approaches....

This presentation provides a review of microfiltration (MF), ultrafiltration (UF), and membrane bioreactor (MBR) technologies for municipal applications. Presentation topics include membrane types, terminology, feed and filtrate water quality, and system components. The presentation concludes with a comparison between MF/UF operations for drinking ...

This presenation provides a description of pilot scale testing and full-scale design of a zerio liquid discharge facility in Florida. Pilot testing included lime softening and ultrafiltration, followed by plate and tube system RO. Found that RO recovery above 50% was not sustainable. Full scale facility included softening plus UF, with softened wat...

This presentation provides an overview of reverse osmosis and nanofiltration technologies for water treatment. It includes definition of terminology, theory, and description of equipment and key issues for operation....

This presentation includes a case study of the South Island Public Service District desalination facility serving Hilton Head, SC. The facility was built to address salt water intrusion, allowing them to reduce withdrawals in the upper Floridan by utilizing the 2500 mg/L TDS Cretaceous aquifer. Water is 118 F with artesian pressure, drawing from 3,...

This presenation includes a case study of the Forest Trails Membrane Bioreactor Wastewater Treatment Facility in South Carolina. The presentation presents a history of the wastewater treatment facility, a comparison of alternative plant improvements that were considered, and a description of the MBR facility that has been implemented. Information o...

This presenation includes an overview of concentrate disposal alternatives for reverse osmosis in a coastal area. The discussion includes a description of concentrate characteristics, reuse opportunities and challenges, and disposal alternatives....

This presentation provides a case study on the Dixon Water Treatment Plant in North Carolina. The facility is produces 3 mgd of RO permeate blended with 1 mgd of bypass flow. Target was removal of silica and TOC....

This presentation includes a case study of the mount pleasant waterworks in South Carolina. It discusses the challenges faced with high TDS, iron, and hydrogen sulfide, and the operation of the treatment facilities used to address this. The facilities include four reverse osmosis plants....

This presentation includes a case study of the Dare Regional Desalination Facility and Frisco RO Plant in North Carolina. Dare Regional Desalination Facility is a 2 mgd facility built in 2004. Frisco is a 2 mgd facility built in 2000, which includes energy recovery....

This presentation gives an overview of membrane treatment facilities along the east coast between Virginia and Maine. It includes general information on RO, MF, UF, EDR, and MBR facilities operating on various types of source water....