In an attempt to restore estuarine ecosystems the Miami-Dade Water and Sewer Department is evaluating the potential to use reclaimed water. Three treatment trains are being investigated nitrification-denitrification-MF/UF-UV/AOP-Ozone/AOP and two alternate trains including RO and RO and MF/UF. The selected design includes full advanced treatment in...

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....

Discusses alternatives for advanced treatment in mining operations, background on RO, and options for brine recovery. Gives order of magnitude costs for brine recovery alteranatives, including FO, evaporators, EDR, and secondary RO....

Reverse osmosis (RO) is a proven technology for the removal of high concentrations of total dissolved solids. One of the major challenges of any RO system is the disposal of the brine, or concentrate, which is produced during normal operations. The treatment of brine is typically undertaken to minimize the cost of disposal or to maximize the reco...

SECONDARY MEMBRANES FOR BACKWASH RECOVERY: ESTABLISHING DESIGN CRITERIA, DEMONSTRATING PERFORMANCE EXPECTATIONS, AND IMPLEMENTATION. The proposed SFWTP will incorporate a submerged ultrafiltration membrane system and will be operated using a siphon (without feed or filtrate pumps), enabling the new facility to utilize available topography for red...

Presentation provides an account of the many beneficial ways in which treated wastewater is now being used. The report describes how reuse water quality regulations are established by regulatory agencies based upon the application for use. To address, membrane processes can provide for effective treatment while minimizing the risk for public health...

This presentation from a preconference workshop in 2014 for Back to Basics on membrane technology discusses water reuse and membrane bioreactors. A description of the various aspects of water reuse and how to address them is given. Advantages and disadvantages of different methods are reviewed....

This presentation discusses the practical application of electrodialysis metathesis (EDM), as experienced while operating two pilots in Colorado, including information on how the EDM system differs from traditional electrodialysis (ED) and the various options for coupling the EDM system with reverse osmosis (RO) / nanofiltration (NF). Data on wate...

Disposal of reverse osmosis (RO) concentrate is becoming an increasingly difficult challenge, even for coastal desalination. Industries and municipalities are investigating zero liquid discharge (ZLD) options for concentrate management. This paper will provide an overview of the options available to achieve ZLD, from wetlands discharge through to...

This dual membrane plant was designed in a time when many dual membrane plants were being designed. Now, with changes in technology the designer is faced with challenges. How do you reconcile needed differences in design and warranties in an operating plant? This is directly applicable to current issues like universal racks, it will be critical to ...