The paper describes dedicated experiments fully understand the hydrodynamics in two membrane bioreactorst. Two types of MRB were studied: 1) Hollow Sheet (HS) and 2)Rotating Cross-Flow (RCF)....

This paper describes efforts to find an analytical technique to determine why an reverse osmosis membrane will foul in operation. Liquid chromatography with organic carbon detection or infrared microscopy coupled by FTIR-ATR is used as well as size exclusion chromatography methods....

This paper will present a case-study involving direct lime injection into the Reverse Osmosis permeate for enhanced finished water stability...

This presentation is the results of the Affordable Desalination Collaboration testing. The testing demonstrated desalination of graater than 50% and as high as 65% was possible. A variety of membrane elements and treatment schemes were evaluated....

This paper will present and discuss the results from study to consider pretreatment devices for reverse osmosis and develop recommendations or best practices for pretreatment of RO feed water systems....

City of Miami Beach's Implementation of a MBR Scalping Plant. This paper documents the team's experience with recognizing the project's payback potential, followed by their navigation of the permit process with three key agencies: the Department of Environmental Resources Management (DERM), Miami?Dade Water and Sewer Department (MDWASD) and the Flo...

This paper attempts to identify the cause of silica polymerization during formation of calcium phosphate scales at elevated pH, and investigates methods to inhibit this co?precipitation even when ferric ions are present in the feedwater of wastewater RO systems....

This paper details the requirement to understand the water quality characteristic of the feed and the filtrate requirement. It talks to the addition of pretreatment chemistry to prevent scaling and fouling without adversely impacting product water quality....

The paper describes case studies from membrane plants that employ automatic self-cleaning filters and have significantly improved their productivity and efficiency....

This paper describes a new well design for both production and injection wells that allows for continuous monitoring of a number of parameters...

This paper highlights a design of a water treatment system for a seawater application to produce potable water. The plant in review is a Qatar Petroleum's crude export. This paper provides for a review of water quality issues utilizing sea-water with a total dissolved solids (TDS) content of 45,000 ppm. terminal...

Affordable Desalination Collaboration (ADC)...

This paper discusses the designing of the 225 MGD Hialeah and Preston Nanofiltration Plant and the methodology and analyses performed to establish: membrane selection, design flux, system size and configuration and pumping strategy. Additionally, results from process validation testing are presented....

This paper presents the following: Energy recovery technology selection process. Capital costs related to equipping the new trains and retrofitting the existing trains with turbine-assisted interstage boost pumps. Challenges encountered and lessons learned from the incorporation of the selected technology into the new and existing RO trains. ? Ac...

Upgrade with Energy Recovery...

This paper discusses the concept, design, and full-scale operation of the no-acid process at the North Lee County RO WTP. The design criteria associated with no-acid operation, as well as full-scale process performance and water quality data will be discussed....

The paper describes a pilot study at the San Antonio Water System to evaluate the performance of Reverse Osmosis treatment and pre?treatment options to meet the Texas Commission on Environmental Quality's (TCEQ) treated water quality requirements. This paper will present the results of the extended operation, air leak testing, and membrane autopsie...

The use of energy recovery devices for RO desalination is presented....

The development of membrane based brine minimization alternatives that do not require traditional lime softening pre-treatment provide the designers and operators of inland brackish water RO systems additional tools for concentrate management. The most cost effective alternative will depend on the feedwater chemistry, ultimate disposal options, fun...

This paper presents the approach taken in both permitting and design of the Sand City seawater desalination facility and will provides an update on one year's worth of operating data, costs, and challenges to complete permitting and startup as well as energy recovery considerations....

Biscayne Aquifier, Floridan Aquifer, South District Water Reclamation Plant, Miami-Dade Water and Sewer Department...

This paper will present the innovative membrane treatment plant design for the Dania Beach membrane plant that was developed to meet these challenges by maximizing system recovery while providing a developed to meet these challenges by maximizing system recovery while providing a high degree of operating flexibility. This design includes a two stag...

Membrane Filtration Systems for RO Pretreatment...

This paper discusses various Ultrafiltration performance issues that were encountered and pretreatment strategies that were developed and tried out to optimize the performance of the UF/RO system on a landfill leachate. Biofouling, solids interference, anaerobic conditions were some of the conditions that needed to be addressed and resolved. Includ...

Recycled Water Quality Management Plan (RWQMP)...

This paper examines three advanced water reclamation facilities that utilize treatment schemes developed to produce high quality treated water suitable for indirect potable reuse. It discusses how the schemes were developed to address geographical, political and regulatory requirements that result, for some contaminants, different treated water lim...

This paper discusses the study, design and permitting of the Marco Island surface water membrane filtration system and describes how the project met the City's needs while meeting several logistical and permitting challenges....

Membrane Pencil Module Test, MIEX - Membrane Ion Exchange...

This paper discusses the treatment goals for an example large-capacity inland water treatment plant, alternative treatment processes for multiple contaminant removal, and selection, including dual-membrane processes [microfiltration (MF) or ultrafiltration (UF) pretreatment for reverse osmosis (RO)] and several non-membrane processes, including act...

Energy Recovery Devices for Brackish, Reuse and Seawater Desalination...

This paper discusses the various design challenges and solutions for Fort Irwin's zero liquid discharge EDR water treatment plant as well as advantages and disadvantages of such a plant....

This paper will present a comparison of the environmental impacts associated with Seawater DesalinationVessels against those normally associated with land-based desalination systems and will reveal some substantive differences which will be of interest to those with responsibility for meeting future municipal or industrial water supply demands in ...

The paper describes desktop evaluations coupled with bench-scale testing to select the right approach for water stabliziation in a post treatment mode based on empirical data rather than assumptions. The study findings are useful for agencies who are looking for Reverse osmosis permeate post-stabilization approaches that produce a low particulate t...

This paper provides an overview and current status of the City of Cleburne Reverse osmosis membfrane plant project?the first use of Lake Whitney as a municipal water supply source....

The paper describes energy usage at three full scale MBR plants. Future directons and possible improvements are discussed....

This paper investigates the antiscaling performance of SPE 0109POT, a new NSF Standard 60 approved antiscalant specifically designed for calcium phosphate scales....

This presentation is an introduction to the applications of MF, UF and RO membranes. The mechanical properties and filtration performance of each membrane are compared....

This study demonstrates the effects of antiscalants on chemical softening using lime and caustic soda to treat intermediate concentrate. Ten different commercially available antisclants were selected from five different antiscalant manufactures....

The purpose of this paper is to introduce and demonstrate the unique optimization of chemical addition pretreatment and ultrafiltration membrane. The Baker WV pilot presentation will focus on optimizing on chemical addition upstream of ultrafiltration system, and the corresponding contaminant removal achieved by the unit operations for this surface...

This presentation discusses the importance of charge and mass balance in membranes system design....

Performance of high-rejection RO Membrane for trivalent arsenic and Inorganic Ion removal studied at El Paso Water Utilities....

Brackish Water Reverse Osmosis using Energy Recovery...

This paper describes a hybrid system for intensified wastewater treatment: Coupling a packed bed bioreactor with immobilized activated sludge culture with membrane filtration...

The paper discusses recently introduced Energy Recovery Devices that meet the unique economic as well as operational challenges encountered in Brackish Water0everse Osmosis systems. Several case studies will be presented addressing various types of ERDs in BWRO applications...

This paper describes the pilot testing at Big Spring, Texas for direct reuse application. Microfiltration, ultrafiltration dn reverse osmosis was studied....

The results of three years of UF pilot testing as pretreatment to RO for desalination is presented....

This paper describes the pilot testing for slant wells for seawater desalination facilities....

Analysis of alternative corrosion inhibitors on nanofiltration finished water corrosivity at the City of Fort Lauderdale Peele Dixie Plant....

The paper describes the design, construction and operation of the City of Fort Lauderdale Peele-Dixie Membrane Plant....

This paper describes the pilot work done at the city if Coeur d'Alene, ID for testing the limits of biological phosphorus removal in a Membrane Bioreactor...

This paper describes the pilot work done at the city if Coeur d'Alene, ID for testing the limits of biological phosphorus removal in a Membrane Bioreactor...

The results of pilot study for the San Jacinto River Authority are evaluated. Selection of the optimum treatment system was based on costs along with evaluations of the treated water quality, ease of operation and maintenance, and long term system reliability. The general strengths and weaknesses of ceramic and polymeric membranes are evaluated as...

In this paper, a comparison will be made between the original treatment concept using conventional reverse osmosis treatment and the V-SEP technology. The comparison will cover initial and annual costs as well as the design and general operation parameters....

The paper will discuss the integration of the membrane system, Nancy Water Treatment Plant in Nancy, France with the conventional treatment and present almost 4 years of operation of the surface water treatment plant....

This paper will present the Kindasa Phase-B Plant experience of a UF-SWRO-BWRO integrated membrane plant....

SUSTAINABLE AGRICULTURE - OPTIMIZING MEMBRANE USAGE FOR WATER CONSERVATION...

This paper presents both current and evolving membrane water treatment system architectures that help address the water and environmental sustainability issues effecting unconventional gas 9hydraulic fracturing-dependent hydrocarbon) exploration and production. The primary new technology central to these concepts is FO membrane water processing, w...

The paper describe how Integration, partnership and risk management are the main reasons why Public-private partnership is the best approach when undertaking a seawater desalination plant project. Several case studies are presented that show the merits of a DBO approach....

In order to improve the reliability of the potable water supply to more than one million residents in South Orange County, California, Irvine Ranch Water District (IRWD) has partnered with several and other water agencies in the region to design and construct the Baker Water Treatment Plant (WTP), a new 28 MM gallons per day (mgd) advanced water tr...

This presentation will provide a brief recap on RO technology current status, trends in RO developments and potential combination of using RO with FO technology....

This paper decribes a study to evaluate the effect of ozone as pre-treatment with ceramic membrane filtration with a focus on permeability, filterability and to understand ozone-induced particle destabilization in high and low concentration of calcium and magnesium....

This paper presents the challenges of concentrate treatment from a variety of sourcewater quality. It further discusses several options for concentrate treatment including deep well injection, perculation ponds and land applications. The regulatory requirements and advantages of various concentrate handling schemes are compared....

This presentation discusses why membranes require cleaning and how to design an effective cleanign system....

This paper decribes how the City of North Port, Florida which faces water quality challenges during the dry season due to elevated concentrations of total dissolved solids (TDS) and sulfate in the source water supply plan to integrate reverse osmosis treatment with exisiting treatment to meet regulatory levels....

The paper described work to investigate the removal of selected PPCPS by magnetic ion exchange, ultrafiltration and reverse osmosis in synthetic and natural water....

This paper presents the results of Miami?Dade's ambitious pilot program and evaluate treatment technologies, providing utility managers with:? The development of this pilot program, including water quality and scientific goals, and the stakeholders input process;? The performance and effectiveness of the individual advanced treatment technologies (...

This paper describes how to properly design and size a reverse osmosis system to achieve maximum on-line time by minimizing fouling...

This paper will present system performance and operational data from the retrofit of an existing Caribbean desalination plant that leveraged the enhanced permeability of nanocomposite membranes to decrease water costs via a reduction in energy consumption In addition, the paper will discuss how alternative system configurations address design chal...

Indirect Potable Reuse; Direct Potable Reuse; update for Desal Technology in California...

Membrane Replacement for Water Reuse Plants...

This brief paper describes projecting, budgeting and maintaining membrane cost planning management and budgeting of membrane facilities...

This paper seeks to understand the development of fouling, the transport and retention mechanisms of solutes through Nanofiltration membranes, and to assess the solvent-solute polymer interactions....

This paper presents a quantitative appraisal of the effect of oil emulsion on ultrafiltration (UF) membrane system. Several cleaning procedures were performed and the effectiveness of different cleaning methods was compared in order to achieve the maximum flux recovery...

This paper examines the synergies afforded by using cyclic softening plus antiscalant to optimize RO recovery rates when treating brackish and semi?brackish feed waters....

MIEX, SIX, ECSF...

The new RO facility will be co-located with the existing surface water treatment plant. The RO permeate will be transferred through a degasifier and scrubber for H2S removal and odor control. The permeate will facility's clearwells, where it will be blended with the filtered water from the existing disinfected, stabilized and transferred to the fa...

Clearwater, Florida Brackish Groundwater Addition using RO Technology...

Nanofiltration Membrane Effect in reducing Disinfection Byproduct (DBP) Formation...

The paper describes the center port design and operation for the Town of Jupiter Nanofiltration plant....

This paper will present the methodology used to locate and test suitable concentrate disposal well sites for the San Antonio Water System brackish water desalination project. In addition, the paper will explain the effect of the new TCEQ regulations on the permitting process for the project and the approach used to characterize the concentrate from...

This paper will provide a unique insight into the benefits achieved through the alternative procurement delivery method utilized for the Hialeah RO membrane s project. The original engineer's cost estimates are compared to actual proposal costs and balancing risk allocation and other efficiencies received. The paper will also discuss some of the ty...

This presentations explains why pretreatment is necessary and details some case studies of membrane pretreatment and the operational results....

This paper illustrates how secondary wastewater treatment processes can play a significant role in membrane performance. Membrane performance trends will be presented from multiple Advanced Water Treatment Plants operating on different types of secondary effluents. This paper will provide operators with further insight into the complexities of memb...

ultrafiltration (UF) membrane plant...

Southern Seawater Desalination Project; Perth Integrated Water Supply Scheme...

This paper presents the source water and RO treatment and conventional treatment engineering and operational considerations instrumental in the design of the Punta Gorda Florida project to provide a reliable and sustainable potable water supply...

This paper presents the importance of a sound Instrumentation & Control design to provide for safe, reliable system operation....

This paper will provide a survey of process design trends in municipal membrane water treatment facilities throughout the Southeast United States from a variety of sources and designers. General process parameters surveyed include but are not limited to water supply source and quality, pretreatment practices, treatment unit capacity, permeate recov...

This paper reviews the forms of corrosion that are commonly found in membrane treatment facilities and discusses considerations for the proper selection of materials in either a design or a maintenance replacement scenario. This paper also addresses specific causes and remedies for corrosion in the disinfection clearwells and post treatment struct...

Desalination Feasibility Study for City of Port St. Lucie, Florida...

This paper descirbes the The Ohio County Water District (OCWD) Treatment Technology selection, testing and design for future regulatory compliance. The design of the new WTP has been a successful implementation of water treatment facilities that included implementation of existing treatment processes in combination with newmembrane treatment techn...

Future of Desalination Development in the U.S....

This study investigates the biofouling behavior of FO membranes, the underlying mechanisms, and the development of anti-biofouling FO membranes by surface modification. The research involves three major tasks as listed below. The first task is to evaluate the resistance of different membrane materials to bacterial adhesion. A direct observation sys...

This paper will discuss the introduction of a new type of brine seal by Toray Membrane USA, Inc....

A peak flow management process using ultrafiltration (UF) membranes was developed to operate in conjunction with MBR systems....

The paper descried a study of application of the alcian blue staining technique in visualizing Transparent Exopolymer Particle substances on Reverse Osmosis membrane surfaces and the prediction of fouling of the surface...

The paper describes the performance of the ultrafiltration pretreatment system of a seawater desalination plant to verify the effects of Transparent Exopolymer Particles (TEP) in a full?scale system. This confirms the theory that divalent ions in the source water can promote the structural integrity of TEP gels through bridging (e.g. Ca?bridging)...

The paper describes the efforts of Harn R/O Systems, Inc. and University of Central Florida pilot beta-test program to demonstrate the usefulness of Ultrafiltration for the treatment of a highly-organic Florida surface water supply in Manatee County to produce drinking water. The purpose of the study was to conduct a beta testing investigation of a...

The paper describes a study by the University of Central Florida for the City of Sarasota to determine whether sulfuric acid could be eliminated from the reverse osmosis process....

This paper talks to the importance of optimizing pre and post membrane treatment to prevent downstream water quality issues....

This paper described efforts to integrate ultrafiltration into a conventional coagulation facility and the possible interactions of the membrane cleaning effort and backwash with the conventional treatment. Some of the limits for the backwash and cleaning chemicals on the effectiveness of the coagulation are determined....

hollow-fiber MF filtration systems...

This paper describes work done by the US Bureau of Reclamation to produce Cellulose Acetate membrane that is naturally chlorine resistant allowing for easier biofouling control and are a better option than Polyamide membranes for waters with high organic particulate fouling potential....

This paper considers various aspects of membrane integrity testing and interpretation of testing results....

This presentation reviews the meteoric but gradual rise of bioreactors globally and enumerates its advancement. The most exciting advancement in the MBR system would be its conversion from an aerobic to anaerobic operation thereby producing more energy....

The paper describes two phases of pilot testing to demonstrate that ZDD technology successfully achieved the water treatment goals at Hilmar Cheese. By combining RO and EDM technologies, the scaling concerns prevalent with a conventional RO treatment approach (calcium phosphate, calcium carbonate, silica) were eliminated....

The paper descirbes the lessons learned from six year of successufl operation of the James City Service Authority 5 MGD Brackish water reverse osmosis plant in Virginia....

This paper describes the development of reverse osmosis membranes with nanoparticles that have some antimicrobial properties and the effectd on biofouling is studied....