Operational challenges and solutions for an NF plant with high iron feed water....

The local wastewater authority as agreed to pay the Jupiter Water System for the nanofiltration by-product....

The City of Jupiter FL utilizes ion exchange, nanofiltration softening and brackish water RO to produce drinking water for its residents. This proejct describes the process by which the utility successfully incorporated a new RO design (center discharge) in a plant expansion. The plant expansion was completed with no net incrase in operations sta...

This presentation is an introduction to the nomenclature used in the appliction of membrane elements and system design....

This presentation describes the retrofit of an existing high TDS brackish water RO plant designed and installed without interstage boost/energy recovery. A discussion of options is given, and limitations due to pipe pressure rating are discussed....

This PowerPoint presentation reviews membrane by-product handling and disposal or reuse....

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 on pretreatment issues was from a preconference workshop in 2014 that described Optimizing Performance and Troubleshooting Techniques for Membrane Plants. The results of poor pretreatment is detailed with the impact on membrane treatment. Different means of pretreating a water stream for a membrane plant are reviewed....

The use of inter-stage boost on brackish reverse osmosis (RO) membrane treatment systems is not only a green approach to reducing operating costs and saving money, but can restore and even increase treatment capacity utilizing existing equipment. This paper discusses implementation of energy saving devices to provide practical solutions to increasi...

This paper describes multiple blending schemes employed by the Town of Jupiter water system since the introduction of enhanced lime softening in the late 1980?s to brackish water reverse osmosis in 1989, addition of anion exchange in 1999 through the process currently being implemented of replacing lime softening with nanofiltration and blending wi...

The tragic events in Flint Michigan that occurred when lead levels rose well above the allowable concentrations in some homes resulted from corossion control efforts and protocols that did not adequately address changes in water quality when the raw water source and treatment processes changed. All drinking water utilities are best served by adopti...

The presentation will look at reuse with the focus of identifying what factors influence the utility's decisions to proceed with reuse. A historic look at the early features of reuse will highlight municipalities across the nation whom have integrated reuse into their utility offerings, credits gained from the integration of reuse into their utlit...

Water treatment using membrane technology will always generate a coninuous flow of concentrate which must be discharged or the water treatment process will stop. Discharge can be treatment of the concentrate to a solid or ZLD but currently at a relatively high cost. The concentrate will contain only the elements present in the raw water, or conta...

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