Paper discusses the unique seawater applications and research in Japan....

This brief PowerPoint presentation describes reverse osmosis membrane plant profiling techniques and results....

This paper discusses the development of highly efficient flat sheet MBR modules, which have superior advantages to conventional ones for thousands of small water treatment plants. In the study they develop MF Membrane specialized for membrane bioreactor technology, they also adopt a fine bubble diffuser for the efficient aeration of the membrane su...

The mission of the Affordable Desalination Collaboration (ADC) is to promote seawater desalination using reverse osmosis (SWRO) as an affordable, viable source of fresh water. In order to accomplish this mission the ADC conducted a multiphase pilot taking feed water from the Pacific Ocean (Navy intake at Port Hueneme, CA). This paper contains pil...

This paper describes how Reverse osmosis (RO) membrane is one of the most powerful tools for solving the global water crisis, and is used in a variety of water treatment scenes such as drinking water purification, waste-water treatment etc. Membranes are being developed RO membranes with characteristics suitable for various operating conditions. Re...

Spreadsheet based data analysis tools have been provided by RO membrane manufacturers for years. These tools have been cumbersome and have limited power. Because off the advanced computer based SCADA systems we have today and stand alone software has been developed for real time data evaluation....

Low pressure RO membranes have been designed effectively to treat brackish water with low TDS (Below 2000 mg/L). As the salinity increases the salt passage increases in a non linear pattern because of the high salt concentration at the membrane surface. Because of this phenomena, it is important for low pressure ROP systems to be carefully designed...

This presentation provides an overview of materials of construction, pore sizes, pressurized versus submersible membranes and certifications for Microfiltration and Ultrafiltration Membranes....

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

This presentation provides a comprehensive overview of MBR Operation and Maintenance. A basic conceptual review of MBRs is provided and significance of proper mechanical check-out of Pumps, Blowers, air diffusers, instruments and valves as well as proper clearing proper cleaning procedures is emphasized....

This presentation describes a small MBR for a island based residential community. The presentation discusses the design of the plant, citing advantages of this technology in this application. Operating results are presented, together with a brief discussion of operating protocol....

This PowerPoint presentation discusses emerging technologies for membrane filtration as seen in 2012....

This presentation focuses on membrane technologies currently under development for commercial use. Technologies presented include forward osmosis, nanotechnology, Pressure Retarded Osmosis, Closed Circuit Desalination, and membrane distillation. The presentation concludes with a discussion of industry trends and predictions for membrane growth area...

Discusses the use of desalination technologies in the mining industry and methods used for monitoring performance in remote locations. Real time tracking of membrane surface conditions is discussed, based on direct optical/spectroscopic monitoring technology. Early detection of scale or fouling critical for efficient operation on high fouling poten...

This presentation will discuss the operation of a 6 MGD pressurized two-stage Ultrafiltration (UF) plant over a 3 year period at the Oliver-Mercer-North Dunn (OMND) Drinking Water Treatment Facility. The OMND Treatment Facility utilizes Ultrafiltration followed by low pressure Reverse Osmosis Softening to produce a blended Finished Water capacity o...

A comprehensive overview of the various types of membranes are discussed. Comparison between element type, chemistry, and system configuration are reviewed. Differences between MF, UF, NF, and RO membranes and the constituents they remove are discussed...

Several key parameters that require continuous monitoring are discussed. The main indicator of comprosied membrane performance are increases in pressure. Based on the type of pressure increase, the type of fouling problem can be identified. Troubleshooting matrix and guide are presented....

Data collection is critical for evaluating system performance. Normalization of daily operating data allows plant owners to determine if a system is performing correctly. Data collection and normalization also help determine when and what to clean for RO systems. Different fouling mechanisms can be identified through proper operating data analys...

This presentation will discuss the operation of a 4 MGD pressurized two-stage Ultrafiltration (UF) plant over a 14 month period at the Oliver-Mercer-North Dunn (OMND) Drinking Water Treatment Facility. The OMND Treatment Facility utilizes Ultrafiltration followed by low pressure Reverse Osmosis Softening to produce a blended Finished Water capacity...

Flat Plate MBR membrane modules can be used for thickening waste activated sludge from conventional treatment plants or from MBR waste water treatment plants reducing the cost of sludge handling and increasing the volume of water available for reuse....

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This presentation will discuss the operation of a 6 MGD pressurized two-stage Ultrafiltration (UF) plant over a 3 year period at the Oliver-Mercer-North Dunn (OMND) Drinking Water Treatment Facility. The OMND Treatment Facility utilizes Ultrafiltration followed by low pressure Reverse Osmosis Softening to produce a blended Finished Water capacity o...

Severe drought over the last five years in California have forced municipalities to search for alternate sustainable sources of potable water. In January 2014, Governor Brown declared a drought state of emergency and directed state agencies to take all necessary actions to respond to drought conditions. Part of the series of actions were to invest ...

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....

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...

This presentation will outline quality control techniques and measures performed on RO, UF, and MBR membranes. The presentation will go into depth on how quality is ensured, and what can happened if quality is not ensured by the membrane supplier....

A review of real-world membrane facility (UF/RO) operating data, highlighting the importance of implementing a normalization program. Raw operating data will be compared to normalized data illustrating the impact of parameters like feed temperature or conductivity. Data normalization enables daily variations in operating conditions to be accounted ...

The presentation will detail the case study of OMND in Zap, ND. This UF and RO system, with secondary UF, began in 2012 after a demonstration pilot in 2010 proved flux and recovery rates were sustainable. The system was then expanded in 2014 to a finished water capacity of 5.2 MGD....

The goal of membrane development in water treatment has historically been to treat more water or wastewater in a smaller footprint. Pioneering Reverse Osmosis (RO) membrane manufacturers originally started out with 4-inch diameter by 38 inches long elements, for commercial purposes in the late 1960’s. Gradually they increased the RO element size ...

The goal of membrane development in water treatment has historically been to treat more water or wastewater in a smaller footprint. Pioneering Reverse Osmosis (RO) membrane manufacturers originally started out with 4-inch diameter by 38 inches long elements, for commercial purposes in the late 1960’s. Gradually they increased the RO element size ...

While its well-known Reverse Osmosis membranes were developed in the early 1960s and commercialized in the 1970s, it may be surprising to learn the first MBR system was also introduced in the 1960s. The first MBR patent was assigned to Dorr-Oliver in 1968, where the membrane treated a side-stream portion of the mixed liquor, see Figure 1 below. Iss...

While its well-known Reverse Osmosis membranes were developed in the early 1960s and commercialized in the 1970s, it may be surprising to learn the first MBR system was also introduced in the 1960s. The first MBR patent was assigned to Dorr-Oliver in 1968, where the membrane treated a side-stream portion of the mixed liquor, see Figure 1 below. Iss...

This presentation will lay out the main concepts of ultrafiltration. We will discuss the basic operating principles, how to choose the right UF technology for your application, key design factors, and common problems and troubleshooting techniques....

An overview of several typical issues that plague MBR systems, and how to troubleshoot them. The presentation will also include a quick overview of common design issues we run into that can contribute to operational issues....