Panel Discussion...

Panel Discussion...

Panel Discussion...

Panel Discussion...

Panel Discussion...

Panel Discussion...

The early generation of reinforced hollow fiber submerged membrane systems for drinking water treatment are coming due for membrane replacement. In many cases the Membrane Filtration Guidance Manual practices for integrity management have been codified since these systems were installed, and it is difficult to apply all aspects of those practices t...

The water reuse industry has transitioned from proprietary microfiltration (MF) systems to MF systems designed by original equipment manufacturers (OEM) that can be adapted to operate a handful of membrane module types. These ?Universal? systems rely on OEMs to dictate generic operating parameters. West Basin has constructed its own pilot system to...

A new method for direct measurement of the abrasion propensity of UF membranes used in water treatment plants was developed. Standard conditions were determined to obtain a rapid response....

We have developed a method of membrane fabrication for the development of membranes for high performance applications that addresses common challenges across the membrane industry. When using common phase inversion and interfacial polymerization fabrication techniques, nearly all properties of the membrane are affected. Modifying the solvent/anti-s...

The demand for clean, safe water has brought membrane technology to the forefront of applications in water treatment. Primarily through size exclusion, membranes provide a physical barrier against colloidal contaminants, disinfection by-product precursors, and pathogens, compared to conventional filtration. The development of self-healing membranes...

The abstract describes research seeking to address the persistent problem of biological fouling in membrane systems. Our objective is to develop a means of modifying commercial reverse osmosis (RO) membranes to withstand hypochlorite exposure. This would allow for the use of hypochlorite disinfectants in RO processes, reducing the harmful effects o...

This paper includes the unique challenges and creative solutions for doubling the hydraulic capacity of a conventional activated sludge plant by retrofitting a four stage membrane bioreactor process within the existing footprint. Moreover, to meet future more stringent nutrient removal requirements to protect the Chesapeake Bay, the new facility ca...

Penn State University is the process of replacing their existing conventional activated sludge wastewater treatment facility with a membrane bioreactor facility. Facility upgrades are required to improve operational reliability, replace aging infrastructure, improve treatment performance, and upgrade the process to meet PDEP Class A reclaimed water...

Food & Beverage Industrial application, utilizing Membrane Bioreactor (MBR) to upgrade existing wastewater treatment plants for water recycle. These plants have been operating for more than seven years with outstanding results They reuse r up to 77% of the wastewater that has helped them t achieve and surpass their targets, decrease demand of city ...

Brine management is becoming increasingly important in industrial and inland desalination. This work presents state-of-the-art options, performance data, and economics for an advanced chemical softening process (?BrineRefine?) and test data from ultra-high-pressure reverse osmosis (RO) membranes. The work outlines a pathway and cost analysis to ach...

This paper provides detail descriptions of strategies and techniques that are used to maximize RO recovery for a water source with very high scaling potential. RO recovery maximization is critical for downstream Zero Liquid Discharge (ZLD) operation due to extremely high costs associated with ZLD. Planning level of cost estimations for the membrane...

Zero liquid discharge (ZLD) is a new concept in the circular economy for industries to eliminate or minimize residual effluents and maximize reuse of treated water. The increasing costs of water and waste discharge, as well as new stringent reuse policies, serve as important drivers for ZLD implementation. A large zero discharge treatment plant loc...

The City of Oceanside?s Mission Basin Groundwater Purification Facility (MBGPF) is an existing facility operating at 75% recovery, whereby 75% of the feedwater becomes permeate (product) and 25% is the concentrate (brine) stream. The City is currently piloting the Desalitech process which is anticipated to achieve up to 75% recovery of the Primary ...

This paper describes the application of Closed Circuit Reverse Osmosis (CCRO) in an existing brackish groundwater treatment plant to increase membrane system recovery and help the City of Santa Monica achieve its water sustainability goals. The findings demonstrate that CCRO offers a cost effective approach that can be implemented at full scale on ...

The extensive network of NEWater plants in Singapore use RO to produce high quality water for the semiconductor industry from municipal wastewater. They also fill an increased need for drinking water. In conventional NEWater plants, recovery is limited to 75-80% by the supersaturation of calcium phosphate and iron in the concentrate. When tail memb...

Reducing RO concentrate flows generated from RO based advanced treatment facilities has become a major interest of agencies located in inland areas where surface discharges may not be possible. To meet this objective, many agencies are considering incorporating a high recovery RO concept into the AWTF design. However, depending upon nature of secon...

Hollow fiber Ultrafiltration / Microfiltration (UF/MF) membranes have historically been challenged to treat feed waters with even low concentrations of oil and grease. Piloting at the GRIP proof-pilot site in Pico Rivera, CA recently revealed Hollow Fiber UF membranes can treat municipal tertiary effluent with occasional spikes in oil and grease, e...

JEA recently completed Phase I of a 3-Phase plan to test and implement a potable reuse project. Phase I was a pilot-scale evaluation of alternative treatment trains (O3-BAF vs. UF/RO) on two significantly different source waters (residential vs. industrial/residential). This paper and presentation will present the approach and operating protocol us...

The City of Butte, MT had to put in a treatment plant when it found that the existing chlorination system was producing byproducts that exceeded EPA limits. The plant was designed to take advantage of the elevation difference between its reservoir and the City, and the ceramic membrane system was selected because it could handle the higher influent...

Nanostone Water ceramic UF retrofit of polymeric MF at a drinking water plant in SD, USA. This paper discusses the retrofit experience and methodology and also compares performance of the ceramic UF to the primary MF system at the same location, running side-by-side....

The Rueter-Hess Water Purification Facility (RHWPF) is unique among membrane filtration plants constructed in the United States as it incorporates a first of its kind, state-of-the-art treatment process including the first installation of ceramic membranes for municipal drinking water in North America. With the challenges faced through commissionin...

Despite efforts toward creating a balanced water supply portfolio, South Coast Water District is currently relying on imported water for 85-100 percent of its water supply needs. This presentation will provide an introduction to the District's planned seawater desalination project at Doheny State Beach in Dana Point, CA. Topics will include an over...

Main Author: Amar Bhardwaj, Student, Columbia University, AMTA ADC 2018 FellowIn this research, thin-film composite reverse osmosis membranes are coated with nanofilms of silicon oxide, a novel material for this application. Silicon oxide has proven to be a selective overlayer that can overcome the limitations of the permeability-selectivity tradeo...

In contrast to the many papers previously published and presented on energy recovery devices (ERD) in seawater RO systems, this presentation will consider the effects of ERD availability and reliability on the function, efficiency, and cost of seawater desalination plants. In this way, this presentation will have interest and value to engineers, op...

This presentation will discuss five (5) MF/UF membrane systems in California for indirect potable reuse that have operated with TIPS PVDF UF membranes. In some cases (WBMWD, OCWD, YVWD), existing membranes have been replaced using Direct RetrofitTM modules In other cases (MRWPCA, SMWD), TIPS membranes were selected for newly installed systems due t...

RO membranes are technically capable of achieving complete virus removal, but leaking seals and membrane damage can cause small leaks, so the integrity should be monitored. Current methods can determine a LRV of 3, so the full removal capacity for viruses cannot be verified in full scale installations. Challenge tests with virus surrogates are not ...

For many utilities, the investigation into potable reuse, whether indirect or direct, has been prominent with no indication of slowing down. In the state of Florida, several utilities are facing water supply and discharge concerns such as increasing populations, drought and water scarcity, and anticipation of future discharge regulations to surface...

This presentation will review the history and development of these treatment processes, with a particular focus on RO based processes. From the early application of RO to desalting water, it will review some of the important advances in treatment of membranes in reuse....

The abstract discusses the relationship between upstream ozone dose and reverse osmosis (RO) permeate total organic carbon (TOC) concentration at the Pure Water Monterey Advanced Water Purification Demonstration Facility. Ozone is one technology available to reduce lowpressure membrane filtration (MF) fouling; however, it also increases RO permeate...

Water scarcity around the globe increases the need to make a better use of the available water sources. WWTP effluent is a readily available source, with numerous environmental benefits and profound track record of successful installations. The current accpeted process usually includes UF, RO and UV/AOP, when Chloramine is dosed to the membrnaes in...

This abstracts focus on the construction works and commissioning of three international drinking water plants, that will feature PWNT?s technologies: Choa Chu Kang waterworks (CCKWW) of Singapore?s National Water Agency PUB, South West Water?s Mayflower water treatment works in Plymouth, United Kingdom and Sonnenberg water treatment plant of ewl en...

A pilot study was conducted in Texas on surface water from the Rio Grande for a Multi MGD drinking water application. Water was drawn directly from the reservoir and sent to the cross flow ceramic membrane process. No coagulation, flocculation, settling or other pretreatments were applied upstream of the membrane process. This presentation will foc...

Meiden?s ceramic flat-sheet membrane (CFM) was developed about a decade ago. It is a flatsheet membrane made from alumina. It has a nominal pore size of 0.1 ?m. Fluid is drawn through the membrane wall, outside to in, under vacuum pressure. It was originally developed for MBR applications. One primary difference with CFM in comparison to most polym...

Fouling has always been an issue in all membrane systems, and it is more problematic when concentration polarization (CP) is high.This research investigates how patterns can affect CP layer in a reverse osmosis (RO) or nanofiltration (NF) system by evaluating the effects of velocity, pressure drop, concentration distribution and shear stress on the...

Harmful algal blooms are organisms that have potentially affected the quality of many water bodies around the world. In this abstract, the synthesis of a Quaternary ammonium (QACs) nanocoated fiberglass membrane, is presented as an effective mechanism of microbial control while avoiding the formation of harmful disinfection byproducts. The synthesi...

Membrane distillation (MD) is a thermally driven process that can be used to extract distillate-quality water from highconcentration streams using waste heat and/or solar thermal energy. To achieve near-100% rejection of solutes, MD relies on an hydrophobic, unwetted membrane. This presentation investigates the long-term (100-day) wetting resistanc...

This project includes fundamental studies of surface initiated atom transfer radical polymerization (SI-ATRP) on membranes to pinpoint methods to control brush density and location, brush length/rates of growth, and membrane stability. These fundamentals will be utilized to produce polyelectrolytic polymer brushes with distinct alternately-charged ...

The Torrance Desalter could not be commissioned after a two year expansion because of increases in interstage feed pressure to the 2nd stage. The initial assumption was that scaling was occurring. However, an autopsy and cleaning study determined that the foulant was entirely organic in nature. The approach was to mitigate the problem by resolving ...

Biofouling is a major problem in membrane operation in water purification. Ultra-pure chlorine dioxide is an effective chemical for removal and prevention of biofouling without damage to membranes. Intermittent dosing can greatly reduce chlorine dioxide costs compared to other means of controlling biofouling....

The paper presents suggestions for improved design and operation of MF/UF treatment plants based on the author?s 35 years of experience. Suggestions include: 1. Derate Piloted Flux to yield more reliable capacity at affordable cost. 2. Reduce the number of terms. A translation table is presented comparing odd to preferred terms (based on AWWA?s MF/...

The City of Dunedin owns and operates a Reverse Osmosis (RO) Water Treatment Plant (WTP) that produces high quality potable water for its consumers. The plant requires refurbishment and the City has decided to execute the rehabilitation via a progressive design-build paradigm. This paper will present some historical background on the plant, and dis...

Lee County Utilities owns and operates the Green Meadows lime softening facility that treats a blend of surficial aquifer groundwater and intermediate Sandstone aquifer groundwater, both hard, freshwater sources, producing up to 9 mgd. The facility?s aging treatment infrastructure was nearing the end of its useful life and needed to be replaced to ...

Membrane surface properties play a key role in the separation processes specifically in membrane distillation and non-polar solvent separation from water. For oil/water separation applications, various surface wettability characteristics, like superhydrophilic-underwater oleophobic (Wei, Sun et al. 2017, Jiang, Chen et al. 2018, Zhang, Wang et al. ...

Northern Alberta Institute of Technology?s (NAIT) Centre for Oil Sands Sustainability (COSS), Canada?s Oil Sands Innovation Alliance (COSIA) and Canada?s Western Economic Diversification (WED) are collaborating on a Membrane Technology Assessment Program (MTAP) that includes the construction of a laboratory pilot scale High Temperature/Pressure Mem...

Refineries are facing challenges associated with processing increasingly variable crude slates, more stringent discharge requirements, and regional scarcity of freshwater resources. MBR technology provides the ability to treat wastewater to higher standards with the option to reuse the treated effluent as process water. The refining industry is typ...

This work is at the interface of research and practice, which is ideal for the Membrane Technology Conference. We take our academic understanding of membranes and computer modeling techniques and show how it can enhance the process engineering work being done by those in the field....

Forward osmosis (FO) represent a low-fouling alternative compared to pressure-driven membrane processes, particularly as a pretreatment step for challenging feed waters. Thus, in practical applications, FO membrane fouling is anticipated. This work demonstrates for the first time that a membrane-independent limiting flux exists with fouled FO membr...

This abstract presents experimental results from a prototype batch reverse osmosis (RO) system. Batch RO has attracted attention recently due its potential to bring the energy consumption of RO closer to the theoretical minimum. Numerous studies have modeled batch RO energy consumption, but only one study reports experimental data on the performanc...

This paper will present bench test and full scale results and discuss key challenges of implementing bench test findings at full scale in the context of the case study demonstration tests.Utilities that treat surface water and utilities that are planning conversion from iron based coagulants to aluminum based coagulants will gain knowledge into imp...

This presentation describes the upgrade pathway of a small indigenous community water treatment facility that was not meeting the water quality standards. This includes process selection, side-by-side pilot testing to assess the need for pre-treatment, economic and non-economic evaluation that assisted in identifying a sound upgrade strategy with m...

Many new RO systems are including equipment and controls to provide flux balancing. In our experience, the proper application of flux balancing is not well understood by the RO design community and can be misapplied or provided with inadequate controls for flexible operation of the RO system. This presentation will help educate RO system designers ...

Jacobs was contracted to develop a design for a new 16.0 MGD drinking water plant at a greenfield site incorporating membrane treatment. Prior to design, the process was validated by a 6 month pilot study to understand the raw quality and the performance of the unit processes, specifically various membrane materials. This paper describes the bench-...

The City of Lakeland on the evaluated the feasibility of utilizing a brackish Lower Floridan aquifer (LFA) source water to allow the integration of this alternative water supply with their existing 51 MGD lime softening water treatment plant. Alternative RO treatment and blending options were evaluated according to ease of integration, water qualit...

This paper discusses results of an extensive pilot study conducted for City of Dunedin to evaluate pretreatment options for treating groundwater containing Fe and Mn with RO. Processes tested include several oxidants (Cl2, ClO2, O3, KMnO4 and combinations of some of them), 3 types of media (sand, greensand plus, pyrolusite), two UFs (ceramic and po...

This paper presents the planning and execution of the conversion of three existing UF skids at a power generation station in Indiana. The approach was deliberately minimally invasive to minimize the installation downtime and the extent of the process changes....

Reject brine, with a high content of dissolved salts, is a by-product of the brackish water and industrial wastewater desalination processes. With the growing demand for water, increasing amounts of brine are produced from the brackish water and industrial wastewater desalination plants, leading to significant adverse impacts on the environment. Ef...

Membrane distillation is one of a few options that have been explored for desalinating oil and gas produced waters, particularly those with total dissolved solids (TDS) concentrations in excess of 50,000 mg/L. Many of the previous efforts in this area have been limited to studying simple electrolyte solutions composed of sodium chloride. In this pr...

Turbidity has been a key parameter for monitoring filtered water quality due to its simplicity and reproducibility. Conventional filters integrity has historically been regulated based on the effluent turbidity unlike membranes which has been regulated based on direct integrity testing such as the pressure decay testing. These direct integrity test...

Biological growth on reverse osmosis membranes can lead to many negative operational changes. Common practice to control biofouling is to maintain a chloramine residual in the feed water, however this can be damaging to the membrane surface overtime, ultimately leading to shortened life of the membranes. This presentation describes the use of short...

California has implemented a 12-10-10 log removal requirement for virus, Giardia, and Cryptosporidium for IPR projects which must be demonstrated. Conductivity and TOC being used as on-line indicators to determine compliance. However these processes lack the sensitivity to accurately measure the actual log reduction for pathogens. It is suggested t...

This paper will discuss an emerging approach to developing holistic data management tools for membrane systems. Several case studies will be presented which will demonstrate to operators, engineers, and management staff how dashboards and modern data analytical innovation can address a variety of challenges and inspire proactive operations....

I have not seen one instance of the MFI used in practice for characterizing the fouling potential of membrane treatment system feed water, despite the potential benefits over SDI, in my 10 years of engineering experience with membrane treatment systems. Only recently have I heard MFI even mentioned at a conference. Since SDI testing has been an ind...

Membrane plants using spiral wound membranes typically are constructed with instrumentation for monitoring the performance across the entire train, however, membrane plants are typically comprised of multi-staged trains, and to properly perform the process control and monitoring of each stage, many existing plants must be retrofitted. The case stud...

The paper discusses work done for the City of Tarpon Springs, Florida Membrane Treatment Facilities and work done for the San Antonio Water System (SAWS) relative to augmentation of calcium in the finished water for stabilization and corrosion control. Extensive jar testing was performed for SAWS to determine the method and limits of calcium augmen...

The purpose of submitting this abstract to Membrane Technology Conference-2019 is to present that biofilters are an excellent fit as pretreatment for membrane systems. This study describes a success story of a novel water treatment system (biofilters along with an RO skid) in the small community of Alberta, Canada. The source water is brackish well...

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This paper summarizes specific challenges, considerations and solutions associated with the design of Eastern Municipal Water District?s (EMWD?s) Perris II Desalter. Topics include source water quality/equalization, pre-treatment, integration with existing facilities, phasing considerations, and RO concentrate volume minimization. The paper will pr...

The abstract describes how three RO trains were designed with varying arrays to treat a single water source. Each of the different arrays were then used to estimate the construction and operation costs. The paper then compares the costs to one another, arguing that 2-stage arrays are cheaper to construct and operate than 3-stage designs with the gi...

This paper provides details on lessons learned from a membrane condition assessment for 3 major UF membrane facilities owned by Region of Peel, Canada. In addition to typical membrane autopsy analyses with SEM and EDX, this paper details the results from advanced testing with SEI analysis, fiber tensile strength testing comparing new and old fibers...

Biofouling is a common limitation of reverse osmosis (RO) and nanofiltration (NF) membranes used in a potable reuse capacity and is often prevented by chemically disinfecting feed waters. Disinfectants can oxidize organics as well as bromide and iodide in these feed waters and generate disinfection by-products (DBPs) that would compromise water qua...

This paper will focus on brining an important issue of oxidative damage of RO membranes by the often overlooked bromamines residual that can form in waters containing high levels of bromide, such as municipal wastewater. The key issue for RO system operators and managers is understanding how the potential for the formation bromamines residual depen...

The City of Corpus Christi is performing nanofiltration (NF) pilot testing as a way of evaluating the feasibility of returning to free chlorine disinfection from the current usage of chloramine. The NF pilot will verify performance of the treatment process to remove organics and DBP formation potential. Utilities that are currently using free chlor...

This paper presents an exciting process that includes MF, NF, ion exchange, and 7-stage RO to remove chlorides from tertiary treated wastewater. The finished water is blended with wastewater to meet updated chlorides requirements. The RO process is performed at high pH to keep silica in solution....

The aim of this research is to understand and model the transport of 1,4-dioxane (a chemical of emerging concern listed in EPA's CCL4) through a nanofiltration and reverse osmosis membrane. This presentation illustrates the means, methodologies, and results of mass the transfer of 1,4-dixoane through two membrane pilot units located in Jupiter, FL....

This paper will cover membrane applications and related operator skills required for efficient operations, and why agencies need to invest in their operators. The author holds a B.S. in Environmental Science from W.W.U. and a Grade III California State wastewater operator certificate. He works as a Wastewater Plant Operator II at EBMUD where he ope...

The proliferation of water reuse applications has introduced a growing need to provide education and training on operating and maintaining the treatment processes in these treatment trains. Membrane filtration and reverse osmosis are essential components of the advanced treatment trains used in water reuse. There is a growing demand for training ma...

Although seawater desalination has been broadly implemented around the globe, historically there have been no comprehensive studies examining the impact of integrating desalinated seawater into existing distribution systems historically utilizing more conventional sources of supply with widely varying water quality. WRF-15-06 addresses that researc...

The purpose of this presentation is to provide an update on the first 6 months of UF and RO membrane performance at the Daytona Beach Demonstration Scale Direct Potable Reuse Facility. The presentation covers observed pathogen LRV performance distributions, membrane fouling control, chemical cleans in place, disinfection byproduct formation potenti...

The Kay Bailey Hutchinson Desalination Plant (KBH) in El Paso, TX has been operating for over 10 years. After 10 years of operation and changes in the water quality, it can no longer produce at the design capacity. A membrane replacement and the addition of interstage booster was determined to be a solution to return KBH to its design capacity....

Will include information about brine reduction using closed circuit reverse osmosis, costs and regulations associated with evaporation ponds, and RO rejection of arsenic and hex chrome...

This abstract will discuss background information to provide context for arsenic removal from a regulatory and health perspective, as well as a brief overview of alternate treatment methods. This paper should be added to the program because extensive operating data and results from three full-scale sites across two distinctly different industrial a...

The subject of this summary is the comparison between continuous and intermittent coagulant addition upstream of ultrafiltration membranes to remove organic compounds and thereby minimize the biological fouling of reverse osmosis membranes. In addition to the results of this comparison, the paper presents a new type of measurement called the ?Coati...

Use of RO membranes to remove PFOS, PFAS, GenX, and Dioxane from drinking water obtained from a surface water supply (Cape Fear River). Contaminants of concerns are present in water supply due to discharge of compounds to the river and current conventional treatment does not remove them. The wo-stage RO membrane pilot test demonstrated the ability ...

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This paper will describe Marco Island's membrane filtration fouling troubleshooting, alternative membrane manufacturer module replacement and facility expansion experience. Other utilities and consultants will benefit from the knowledge generated during the process of understanding/mitigating of MF fouling within the Marco system. Utilities will al...

The City of Pearland is planning to construct a 10 million gallons per day Surface Water Treatment Plant expandable to 20 mgd. The source water is challenging to treat due to the high variability in water quality. Processes selected for pilot testing included: Pre-oxidation and disinfection with chlorine dioxide, Conventional pretreatment and settl...

Our abstract describes our goal to provide a thorough review of the different components commonly used in specialty cleaners. Professional Water Technologies has been serving the water industry with specialty cleaners and we intend to share our historic knowledge about experiences in cleaning with a focus on scientific findings and performance reco...

Water and Wastewater Membranes need to be protected against fibrous debris that not only create excessive membrane cleaning cycles and labor intensity, but too often abrade & damage the membrane surfaces, as well as clog the aeration manifolds that scour the membranes. Pre-Screening has become extremely important in protecting both membrane warrant...

The standard waste water RO desalination technology based on two or three stages RO train arrangement. Standard Process include chloramine dosing to prevent bio-fouling, and antiscalant addition to prevent scaling formation in high recovery RO process. The best condition of scaling, fouling and bio-fouling formation is stability. Stability in flow ...

We demonstrated the fabrication of a polymer-free and fully carbon membrane (FCM) to be used for water treatment. A FCM combines the advantageous properties of polymer and ceramic membranes and could represent a new class of membranes....

Cal Poly Pomona, Carollo Engineers, Inc., and Pall Corp. are participating in a water reuse research funded by Bureau of Reclamation to evaluate novel treatment train ?integrated membrane anaerobic stabilization (IMANS)? system for wastewater treatment and water reclamation, the performance of microfiltration (MF) and reverse osmosis (RO) of primar...

The Orange County Water District (OCWD) Groundwater Replenishment System (GWRS) has selected a new filtration membrane to implement for the GWRS final expansion from 100 mgd to 130 mgd. Presently, the GWRS facility has had a singular filtration product for the life of their facility, with an established design and standard operating procedures whic...

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The presentation describes the pilot testing arrangement with an infiltration supply well, ultrafiltration pre-treatment system and three stages of NF membranes to simulate full scale operation to reduce TOC to less than 0.8 mg/L. The pilot equipment was operated for three months at 90% to 96% recovery, and operational data were collected on pressu...

This abstract compares two different membrane technologies: low pressure membranes and a newly developed hollow fiber nanofiltration membrane. The ultrafiltration plants in Scandinaviaemploy a unique method of integrity testing that will confirm virus removal rate of the water treatment plant. Hollow fiber nanofiltration plants are currently being ...

Membrane fouling caused by iron or the combination of iron and organic matter is very common operating issue in membrane plants. Iron species in natural water can be dissolved, via incomplete oxidation and/or precipitation, as well as metal-NOM complexation, both may cause the loss in membrane permeability and/or difficulties in cleaning. The chemi...

This paper will describe the use of a unique organics characterization method, liquid chromatography with on-line carbon detection to identify the primary cause of organic fouling in two fouling scale ultrafiltration plants, biopolymers and cTEP, and how the LC-OCD results were used to mitigate the impacts of these foulants through optimization of ...

Fouling of microfiltration (MF) membranes results in increased energy demand, increased cleaning intervals, and membrane replacement frequency. MF membrane fouling is largely due to deposition of colloidal nanoparticles...

This paper presents a successful story for optimizing the design of an industrial reuse facility using MF/RO/UV. Design parameters were established based on pilot testing and engineering evaluation. However, the sizing of the MF / RO system and the feed and product tanks becomes very challenging due to site restrictions and the dramatic variability...

This presentation is about planning and design of an expansion to an existing conventional WTP with MF/UF membranes and will provide the following learning opportunities to attendees:?How to design a membrane system to operate in parallel with a conventional water treatment plant (WTP).?How to maximize competition among rectangle membrane suppliers...

Though the use of membranes for reclaiming municipal wastewater is well understood thanks to over 30 years of experience, the reclamation of industrial wastewater is an ongoing challenge due to the variation and complexity of the incoming feed waters. For such waters, piloting is typically recommended. This paper will follow the process of piloting...

The conventional membrane bioreactor technology is a versatile solid-liquid separation used in wastewater treatment for clean effluent production developed in the last few decades. Nevertheless, the research on anaerobic self forming dynamic membrane is still at its infant stage. Anaerobic self forming dynamic membrane picked up its pace just after...

Anaerobic membrane bioreactors (AnMBRs) provide many advantages for wastewater treatment and resource recovery from waste streams, and AnMBR research has grown exponentially in recent years. Studies have shown that AnMBRs can successfully treat a wide variety of wastewaters at mesophilic and thermophilic temperatures, and psychrophillic temperature...

Seeking a solution to the problem of a minimally staffed, remotely operated treatment plant, drove the project team toward a solution that doesn?t fit the traditional MBR model. This abstract describes an innovated combination of a surface aerator aeration basin in combination with an MBR system, which to the best of our knowledge is the first in t...