Chloramines and peroxide are used for biological fouling control and advanced oxidation in advanced water treatment, but both chemicals can have unintended impacts on membrane performance if not kept under control. This presentation shares practical insights for operating three types of membranes in a potable reuse process, with a view to the impac...

The West Basin Municipal Water District?s Edward C. Little Water Recycling Facility (ECLWRF) located in El Segundo, CA is a world class facility that produces four qualities of recycled water for municipal, commercial and industrial applications including water supply to injection wells that are part of West Coast Barrier System. The source of recy...

Designing a membrane plant with the right parameters ensures that finished water production and water quality goals are achieved while minimizing unforeseen, premature and costly membrane module replacements. However, even with pilot testing, it is challenging to predict the impacts of seasonal or long-term changes in raw water quality and the eff...

This presentation will discuss the possibilities and constraints of various approaches to design of RO units for different applications. Advantages and limitations associated with different configurations will be discussed and illustrated through design examples. A practical approach to the selection of membrane elements and system configurations w...

Ultrafiltration membrane plants are typically operated within supplier process recommendations. Experienced plant operators may decide to test modifications of some process related parameters to evaluate their effect on the running costs. The paper presents long-term operation of the Keokuk Municipal Waterworks, Iowa, USA, where such experiments ha...

The City of Port Townsend own and operates a municipal water system is supplied by gravity from the Big and Little Quilcene Rivers, which are on the western side of the Olympus Mountain Range and is located approximately 30 to 20 miles south of the City respectively. The entire system operates by gravity from both of the diversions, through two la...

Hong Kong is one of the most densely populated regions that is experiencing stresses on its water resources. The Water Supply Department (WSD) of Hong Kong has initiated a Total Water Management strategy to manage demand and supply. As part of this effort, it is implementing a seawater desalination plant with 135 MLD capacity, expandable to 270 MLD...

The focus of the presentation will be on the detailed evaluation of bench- , pilot- , and full-scale study results, the challenges of implementing and maintaining the required treatment levels for optimal performance of a new SWRO plant under varying seawater quality conditions. The results from this study will provide utilities with an in-depth un...

This paper describes the operational experience and water treatment results obtained from a 0.3 MGD desal demo plant that uses the following processes: subsurface intakes (for pre-treatment), cartridge filtration (for RO unit protection), RO, UV disinfection, pH adjustment and calcite contactors (for stabilization) and chlorination. The results obt...

Utilities and consulting engineers can benefit by reviewing past performance of similar projects. The joint AWWA AMTA conference in West Palm Beach is an excellent opportunity to share this knowledge. A written paper and PowerPoint will both be submitted....

This paper reinforces the vital role membranes continue to play in the water industry by showcasing state-of-the-art RO water treatment (12 mgd) and MBR-UV (7 mgd) water reclamation processes at a common site. Highlights include public engagement and outreach for community support, master planning, alternative delivery with progressive design-build...

The abstract describes the content of a paper that analyzes economic factors between running membranes beyond their useful life (if the membrane is still operational) and the cost of new membranes. It reviews the costs of operating membranes, including additional chemical cleanings, and the largest power costs. The decision, especially by a municip...

This abstract will give an update on design and procurement of Florida's largest low-pressure membrane facility: i.e., 54-mgd ultrafiltration (UF) retrofit at Lake Manatee Water Treatment Plant in Manatee County. This project also reflects the largest planned UF retrofit in the US. The project includes refinements of existing pretreatment system, a...

To meet the current and future water demand needs, the city of Pearland is planning to construct a new membrane Surface Water Treatment Plant. The plant will have a production capacity of 10 MGD in Phase I, will be in operation by January 2023 and will be expanded to 20 MGD in Phase II. The ultimate goal is to provide an affordable, well-blended, a...

Provides a summary of design and process considerations for the proposed 4 MGD RO process and facilities for blending with the city's existing surface WTP. Includes updates based on what has been encountered during well drilling and project costing....

The United States constructed the San Luis Unit to provide irrigation in central California with the 1960 San Luis Act. Subsequent court orders mandated that agricultural drainage service be provided to the farms that were supplied irrigation under the San Luis Act. The impacts to waterfowl and other aquatic species that manifested in 1985 at Keste...

Since 2015 ceramic membranes have been in continuous use in dewatering MF and UF membrane concentrate to achieve Zero Liquid Discharge (ZLD). In this case study for DOC and Fe, removal of the Sludge with 20% solids is produced automatically on demand without consumables or labor of any kind. The recovered water is sent directly to the clear well. T...

There are thousands of implementations of reverse osmosis (RO) treating industrial water. However, options for treating RO brine are limited. The proposed paper will introduce two novel technologies for residuals management and zero liquid discharge (ZLD). Operational results in industrial applications will be presented, along with economic compari...

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This presentation will discuss efforts to investigate the favorable role of a high surface energy to delay the crystallization and adsorption of gypsum to thin-film composite membranes at concentrations relevant to reverse osmosis systems treating brackish water....

Recovery of rare earth elements (REEs) from oil and gas produced waters could ease the United States dependence on China's current domination in REE production. Furthermore, NF separation practices could be implemented nationwide for extraction of REEs from wastewaters, which will contribute to the strengthening of the United States economy and ind...

Energy and water are essential to provide prosperity to any community in terms of municipal, agriculture and industrial areas. Microalgae has gained a lot of attention as a promising biofuel source and may also prove to be effective in the treatment of wastewater and CO2 sequestrations....

The food-water-energy nexus hits close to home for the membrane technology community because of the clean water solutions we offer. Our research aims at the core of the nexus by offering an innovative solution that provides a new low-energy water source specifically to the agriculture industry. The advances made through our research will be applica...

Reverse osmosis (RO) is a membrane treatment process used to separate dissolved solutes from water. This technique has become increasingly popular due to the variety of objectives it may accomplish, including desalination of seawater or brackish water, advanced treatment for water reuse, softening, natural organic matter removal to minimize disinfe...

This paper will present the RO performance results that lead to membrane fouling and oxidiation, the investigation of their causes, and the evaluation of the pre-treatment approach used to mitigate both for treating a variable blend of surface water sources....

Natural organic matter (NOM) impacts membrane treatment, and is an important water quality parameter throughout the water process treatment train. This paper highlights considerations for NOM control in pre- and post-membrane processes....

This testing will characterize RO elements for fouling performance and TOC rejection while treating ozonated secondary effluent. This paper will document the results of this testing, offering an important body of data that will be of use in the selection of RO membranes for all potable reuse projects considering the use of ozone as pretreatment to ...

This important study evaluated a new electrodialysis (ED) technology, electrodialysis metathesis (EDM), which offers the potential to reduce the costs and energy associated with RO concentrate treatment, while reducing solid waste by-products. The paper will provide background information on EDM technology along with 6 months of demonstration testi...

A traditional two-stage RO system was coupled with a 3rd-stage, semi-batch RO process to increase overall recovery above 92%. The CCD process was integrated as a 3rd-stage as it could achieve higher recoveries due to its cyclical operation pattern, ability to achieve higher cross-flow velocities through recirculation of the concentrate stream, and ...

A newly built zero-liquid discharge industrial wastewater treatment plant for the treatment of groundwater flow from a railroad tunnel provides an excellent example of an elegant solution to a highly constrained challenge. The design of the plant was constrained by a lack of sewer or water connections, a small space in the midst of a ski resort to ...

The City of Carlsbad installed a 3.4 mgd UF facility to expand the reuse from the adjacent Encina Water Reclamation Facility. Water quality from the upstream wastewater plant resulted in various operational challenges during initial plant start-up. The plant operators and design-build team were able to adjust maintenance cleaning approaches and rep...

This paper will describe the findings of the engineering assessment and resulting recommendations for an optimal expansion plan and operation of a multi-process treatment facility, including NF, RO and lime softening treatment systems. Other co-located lime softening and membrane facilities could take advantage of a similar process and expansion op...

The City of Ithaca, New York decided to replace their 100 year old plant with a more advanced technology. A comprehensive pilot test was conducted, and three manufacturers were selected for preparing life cycle bids for this 6 MGD facility. Plant construction was implemented in 5 phases due to complexity of keeping the old plant in service. We beli...

The OCWD has approved the final expansion project of the Groundwater Replenishment System to produce 130 million gallons per day of purified water. This final expansion will bring the GWRS facility to its built-out capacity, however with challenges, including a new wastewater source, different water quality, and membrane pilot study data to evaluat...

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 ...

Overall, this paper will be of keen interest to utility owners, operators and engineers interested in tools and techniques that can be used to develop indicators that can maximize the operational lifetime of membrane modules prior to replacement. Since membrane retrofits are currently of high interest to many municipalities, this paper will provide...

Although significant progress has been made toward the development of continuous direct integrity test methods for NF/RO systems, the current industry discourse has largely overlooked the challenge testing requirements described in the Membrane Filtration Guidance Manual (MFGM). However, some state regulators may be unwilling to grant significant p...

The purpose of the paper is to discuss water quality monitoring practices that are associated with the operation of RO systems at Advanced Treated (aka Recycled) Water Facilities. Conventional regulatory approaches with regard to the use of surrogate indicators of operational performance (e.g., permeate conductivity, TOC) are affected by variations...

Due to the increased popularity of potable reuse, demonstrated by the number of projects being implemented and proposed, the importance of membranes used in this application has risen. One of the biggest challenges to the application of any treatment technology in potable reuse applications is to demonstrate its effectiveness for pathogen removal, ...

Methodology and results of challenge testing conducted with full-scale UF and RO systems using MS2 phage and Rhodamine WT, respectively, to gain 3-log virus removal credit for both membrane processes at the Beenyup Advanced Water Recycling Plant groundwater replenishment (IPR) scheme in Perth, Australia....

Reverse osmosis (RO) has played an important role in the practice of potable reuse yet there remains a substantial discrepancy between its actual performance and awarded pathogen log removal credit. The primary objective of this study was to evaluate alternative surrogates, both naturally occurring as well as seeded to RO feed water, that offer hig...

This paper summarizes cost effective and proven approaches/methods to get similar pathogen credits when MBR replaces MF/UF in potable reuse trains. The findings of this paper are highly valuable for agencies, regulatory agencies, consultants and individuals who are involving in potable reuse projects and or helping developing a frame work for fort...

Potable reuse of municipal wastewater has emerged as a viable strategy for increasing the water resource portfolio in arid and water-stressed regions. To protect public health, organic compounds such as disinfection by-products, pharmaceuticals, personal care products, industrial chemicals, and other contaminants of emerging concern should be remo...

The City of Altamonte Springs Potable Reuse Demonstration Pilot is an innovative treatment train in Central Florida which explores potable reuse without the use of reverse osmosis. The City aims at developing cost and process data for non-RO options for potable reuse in Florida, and assist the Florida Department of Environmental Protection in futur...

Padre Dam Municipal Water District is considering two technologies to achieve a high recovery with reverse osmosis for its upcoming advanced water purification facility. Pilot testing from 2016-2017 at Padre Dam?s demonstration facility has shown that 95% recovery is possible with either a closed circuit desalination process and a conventional 2-st...

The Hamby WRF project is an important drought resilience planning project where indirect potable water reuse is being applied successfully. Execution of such a project comes with a variety of challenges and lessons learned. An important difference between this projects and others is the use of MBR in a potable reuse scheme. With the plant in operat...

The purpose of this presentation is to provide a construction update of the Daytona Beach Demonstration Scale Direct Potable Reuse Facility. After one year of an accelerated construction schedule due to meeting funding requirements, the conference time frame will provide an opportunity to present the challenges, successes and obstacles overcome dur...

A pilot-scale osmotic membrane bioreactor-membrane distillation (OMBR-MD) system was developed for potable wastewater reuse at military forward operating bases. The system consists of forward osmosis (FO) membranes submerged in a bioreactor and an MD system designed to reconcentrate the FO draw solution and generate product water using waste-heat. ...

The Signal Hill project showcases an innovative approach that other water suppliers can capitalize on - membrane treatment with high recovery to conserve local resources. This paper describes the key considerations of a hybrid membrane configuration to achieve color removal while maintaining high recovery without membrane scaling....

The objective of this study is to lower the energy and chemical use for the Full Advanced Train, required in California for potable reuse. The study offers an innovative approach to mitigate biological and organic fouling of membrane systems and enhance process water quality leading to reduced operating and maintenance (O&M) costs. This is accompli...

This paper focuses on a novel technology, blending the high-treated water quality of a membrane with the simplicity of a granular media filter. This ?MGF? technology is a direct replacement for filter media and underdrains inside the filter box and operates in gravity mode, using the existing hydraulic profile. Unlike immersed membrane filtration, ...

The town of Jupiter operates a unique nanofiltration (NF) plant that includes an innovative system of split-feed pressure vessels configured with center-port concentrate outlets. When the plant was designed, the split-feed concept was considered a promising design innovation to reduce feed pressure. Now, with seven years of successful operation and...

Nanofiltration (NF) membranes represent a technology that is well suited for high-quality drinking water production from source waters with high concentrations of natural organic matter (NOM) or other contaminants. However, the application of these membranes is limited, mainly because of the challenges related to system complexity and cost. The aim...

This presentation discusses how ultrafiltration (UF) membranes can be used to reduce trade waste costs by treating clarifier and backwash wastes. This presentation offers the following: Demonstrates how UF membranes can be used successfully in a nonconventional application with challenging feed water; Review of pilot technical data and results: lea...

AMTA - USBR Fellowship Awardee: The following research involves optimizing a nanofiltration membrane process in Jupiter, Florida. The research involves optimizing membrane pretreatment, treatment, and post-treatment. This research is applicable to utilities operating with membranes. The presenter is also a recipient of the 2016 AMTA-USBR Fellowship...

West Basin's Custom Engineered Microfiltration Pilot Unit has been in service for over a year now testing six different pressurized PVDF modules in parallel using West Basin's Title 22 water as a feed source. The results of Phase 1 of testing, which involved piloting these modules using manufacturer recommended sequences for backwashes, CEB, and CI...

Pompano Beach is conducting pilot testing to optimize chemical pretreatment and power costs for replacement nanofiltration membranes. Preliminary pilot testing appears to indicate that operation without acid or antiscalant pretreatment, at a lower feed pressure than previous membranes, may be feasible....

This presentation reviews a case study in reducing membrane fouling at Colorado's largest submerged membrane facility utilizing both alternative coagulants and alternative cleaning solutions....

The characteristics of NOM fouling and chemical cleaning of ceramic membranes during water treatment is an area that has not been researched in depth. The specific fraction of NOM foulants that are primarily responsible for long-term irreversibility are still not well understood.Extent of NOM fouling for ceramic membranes need to be identified. In ...

This presentation will review the use of chloramine as a means of RO membrane fouling control in reuse applications and discuss the advantages and challenges of this approach. It will use case studies in reuse from the United States and around the world....

Chemical cleaning is a part of the membrane maintenance process and is usually performed when the permeate flux decreases by about 10% or when the pressure drop increases by about 10-15%. Although it is important to select the cleaning chemicals based on the type of foulant, it is also very important to understand the effect of chemical cleaning on...

This paper attempts to identify the mechanisms by which chlorine dioxide aided in foulant removal, and to verify the tolerance of polyamide membranes to ClO2 as a cleaning aid....

The current study summarizes findings of over 9-month long optimization study evaluating different chemical dosing strategies to address common scalants, such as calcium phosphate, on reverse osmosis membrane systems used in municipal wastewater treatment for potable reuse. The type of project testing different dose strategies in this case at demon...

This presentation addresses the challenges encountered for controlling a truly on-demand WTP. Specific details for the new WTP hydraulics and the new ceramic membranes will be discussed. The focus will be on the start-up of the facility between substantial completion and the first year of operation. Specific details of what worked and what didn?t w...

A common complaint for water treatment operators when it comes to hollow-fiber MF/UF systems is the frequent repairs and production downtime needed for fiber breakage issues. At a Midwestern surface water treatment plant, treating backwash waste (variable turbidity) from the primary MF skid to increase recovery for potable water production is neede...

In the recent years, a new advanced treatment train including ozonation and ceramic microfiltration has been piloted. This pilot study evaluates the impact of combined ion exchange and ozonation pre-treatment on the performance of ceramic microfiltration treating wastewater effluent for water re-use....

The abstract describes the methodology of how a mass transfer model of the anthropogenic wastewater contaminant, caffeine, was created and validated. It also presents a general description of the results of the project. This abstract should be added to the program because it provides valuable insight regarding the transport of caffeine through a na...

This presentation is provided based on an experimental study to investigate the applicability of the NF/RO membrane processes for remediation of groundwater contaminated by pesticides. This is the first step of a project to introduce membrane process coupled with biological sand filtration for waterworks in Denmark. Different parameters such as mem...

The aim of this research is to solve a treatment problem of emerging concern by engineering a membrane with multiple functionalities to eliminate emerging contaminants without compromising the permeate flux resulting from fouling. The results of this project will help prepare the water industries for a class of contaminants to be potentially regula...

The city of Deltona is investigating the optimization of its full-scale membrane bioreactor (MBR) facility by utilizing a calibrated BioWin model to evaluate and determine operating conditions that will cost-effectively minimize effluent nutrient loadings from the MBR process. This presentation presents the owner's perspective on staying ahead of a...

The BRWRF is an 11 mgd advanced treatment facility, commissioned in 2008 with the world?s largest membrane bioreactor (MBR). The BRWRF effluent augments the Potomac River and provides non-potable reuse to data centers for cooling. This paper conveys the experience of operating a large MBR facility with a focus on process operation, monitoring, and ...

This presentation describes how the town of Riverhead, NY, is saving 100 million gallons per year of potable water by reusing its wastewater for landscape irrigation. The existing SBR basins were converted into a unique batch-style membrane bioreactor (MBR) while maintaining capacity and treatment during the upgrade. The design flow increased from ...

This presentation will discuss the challenges of developing reliable, cost effective treatment systems capable of treating water from multiple sources with varying water quality characteristics. This presentation will focus on the development of the reverse osmosis (RO) system for the Thomas Groundwater Treatment Facility (TGTF) in Scottsdale, AZ, ...

This presentation describes a new RO water plant under design to remove hardness, color and other contaminants from a groundwater supply containing a significant organic component. The design is relevant and important to the program since it illustrates key components that must be included in RO design to reduce fouling and scaling. The paper will ...

Case studies on reverse osmosis systems experiencing unexplained rejection loss with deep well water sources. Comparisons are assessed between sites with similar water sources that run smoothly and ones that experience problems....

The Water Replenishment District (WRD) is constructing a new 13,000 acre-feet per year Advanced Water Treatment Facility (AWTF) in the city of Pico Rivera. The AWTF is part of an overall program titled Groundwater Replenishment Improvement Program (GRIP). The AWTF process will be designed as a multi-barrier treatment process that includes: Ultrafil...

This study will compare conventional SWRO systems operating at 40-45% recovery utilizing currently available energy recovery devices with the twin turbocharger design operating at about 60% recovery. Also, the impact on center port membrane housings for reduction in membrane arrays costs will be explored....

This paper presents results from the latest survey conducted in 2017 and funded by the Bureau of Reclamation....

At its proposed buildout capacity of 30 MGD, the SAWS BGD project will be the largest municipal RO treatment facility in the state of Texas and one of the largest in-land potable desalination facilities in the United States. This is the only municipal RO treatment plant in Texas that uses a three-stage RO system with an overall feed water recovery ...

This presentation follows up from a previous study where a two-pass nanofiltration/reverse osmosis (NF/RO) system was used to selectively remove sodium chloride and reduce concentrate disposal costs. The current study, initiated in June 2017, includes a scalable NF/RO system running in parallel with a reverse osmosis system to demonstrate reduction...

This presentation uses operations at an existing 10 mgd inland desalter facility (with an additional 10 mgd expansion currently being designed) and analysis from a four-stage pilot system to outline strategies to reduce the cost of high recovery RO, increase recovery of costly water resources thereby decreasing reliance on non-renewable water, and ...

This presentation is about how to use the chemistry we know in brine water to solve scale build-up attributable to long disposal lines, inconsistent flows, and the introduction of air. We have worked heavily with two municipalities struggling with issues, the Brine Line in the inland empire and the concentrate tank in city of Sterling, and we have ...

Minimal information is available on membrane sludge thickening. This paper and presentation will provide detailed information on the new modules performance in this challenging application....

Today?s industrial reuse challenges require innovative solutions. This presentation will share the successful planning and design of an innovative tertiary membrane bioreactor (TMBR) facility. This facility will provide flexibility to meet future water quality challenges, reduce costs to enable water reuse while preserving potable water, and manage...

This abstract details the activities, problems and solutions encountered during the start up of a 28-mgd base loaded MF facility. This paper will detail the issues that were found and how to best deal with them. We also had an issue with membrane plugging on all 14 racks. This required enhanced CIPs and module isolation to restore permeability. Thi...

NSID commissioned a new RO system in 2016 to replace their LS WTP. During the commissioning process, the source water quality at the facility was found to be unsuitable for the membranes start-up, despite previous performance tests demonstrating that the water quality as sufficient for membranes. This paper will discuss the challenges and solutions...

This presentation provides an overview of the commissioning and performance proving of a highly complex 6 MGD water treatment plant designed, built, and commissioned by CDM Smith. Located in the USA?s Mojave Desert, the treatment processes include three different membrane treatment systems (EDR, UF, and RO) in addition to lime softening, ion exchan...

Many older proprietary microfiltration and ultrafiltration (MF/UF) membrane systems have been in service long enough to require replacement of the membrane elements. This paper presents methods to specify and select new replacement elements for existing proprietary systems allowing competitive bids between suitable manufacturers (rather than riskin...

Discussion of the complexities of replacing 7,000 plus membrane modules in a live water treatment plant with multiple stakeholders would be of great interest to membrane vendors, consultants and planners as well as utility owners and operators....

This session would include either a 30 minute or 60 minute presentation on the events that led up to the replacement of the Lake Forest membrane filtration equipment. Lake Forest originally installed a 14 mgd (warm water) rated Aquasource system in 2004. That system became obsolete in 2014. The City then embarked on a search for a new membrane syst...

The evaluation and lessons learned during the membrane replacement process are applicable to other utilities looking at membrane replacement and how to consider upgrades of their existing RO systems with a focus on reducing life cycle costs. This paper will summarize the results of the initial facility evaluation and the membrane replacement bid re...

James City Service Authority (JCSA) has been successfully operating a 5.0 MGD brackish water RO plant since April 2005. Although the membranes were still meeting the water quality requirements, budget was set aside to replace them primarily due to their age, to reduce power consumption, take advantage of the newer membrane technology and have more ...

This paper provides a summary of the membrane evaluation, condition assessment, evaluation results, design considerations for the system upgrade and a discussion of several items found during commissioning....

Aqua Membranes has developed membrane feed spacers printed directly on the membrane surface. These spacers are thinner than conventional mesh spacers and allow up to twice as much membrane surface in a standard size element. The spaces can have any shape and are more "open" in design which reduces membrane fouling and making them easier to clean....

This paper will detail the considerations that favoured hollow fiber nanofiltration membrane filtration over alternatives and design of a number of full scale plants. It will provide operational data of plants and will provide an outlook for implementation of hollow fiber nanofiltration in the production of potable water....

The difficulty in monitoring pathogen removal is a gap that has been identified in the adoption of Membrane Bioreactors for IPR/DPR. This paper presents a newly proposed method for the calculation of solids LRV across the MBR system. The new method relies on the widely used standard method for enumeration of total suspended solids with a modificati...

This presentation presents data and application perspective on how to apply a DIT in a MBR setting. It's value is in presenting a data-driven perspective to the application of DIT in a MBR to be considered as a credible alternative to only turbidity monitoring....

Provides an update on EPWWS's experience regarding membrane replacement, including the approach to obtaining TCEQ approval, direct integrity testing, lessons learned, and operational implications....

Membrane technologies such as microfiltration/ultrafiltration and reverse osmosis have been used successfully for treatment of municipal wastewater effluent for indirect potable reuse for nearly 20 years. The use of these membrane technologies are not as prevalent for industrial effluent reuse due to variable water quality and cost considerations. ...

Many power/steam generation plants still rely on the traditional ion-exchange technology to treat the demineralized water for boiler make-up water. RO is a new technology showing a great deal of advantages and significant growth in the industry, but the full replacement cost will be costly. Veolia Grays Ferry has conducted a comprehensive alternati...

Power production consumes significant amount of clean water and generates waste which due to global water demand needs to be treated and reused. Water Planet Inc. (WPI) set out to design and evaluate a novel and low cost membrane based treatment train to perform removal of silica, solids, and other remaining contaminants from the challenging coolin...

This presentation will provide valuable information regarding the design of a 4.0 MGD UF/3.0 MGD RO integrated membrane system to be applied as a potable reuse facility. Information will be provided regarding the nuances of an interchangeable rack UF system design that will be beneficial for those looking to implement a non-proprietary UF system fo...

This presentation will provide an overview of the large diameter membrane assessment, including a review of operating and troubleshooting data. It will identify some of the advantages of large diameter membranes along with some of the operational challenges....

This presentation is about a 2.9 MGD UF/RO project for the purpose of removing selenium from a mine-influenced surface water. It's important because of the limited published work regarding UF/RO application for selenium rejection, and the use of an open-platform UF system in an industrial application, which is one of if not the first documented ins...