WATER MEMBRANES WHITE PAPERS AND CASE STUDIES

Denitrification Technology Significantly Improves Polluted Chesapeake Bay Watershed
Denitrification Technology Significantly Improves Polluted Chesapeake Bay Watershed

The 64,000 sq ft Chesapeake Bay Watershed includes parts of MD, VA, WV, PA, and NY. Of the 1,000s of WWTPs supporting nearly 18 million people in the watershed, 470 are designated by EPA as significant sources of nutrients and TSS. Algal blooms reduce DO levels in the water, killing plant and animal life –from marsh grasses to blue crabs to rockfish. Learn how De Nora TETRA™ Denite® technology is treating 450+ MGD in the Bay.

IMEC UPW System Utilizes 3M™ Liqui-Cel™ Membrane Contactors For Oxygen Removal
IMEC UPW System Utilizes 3M™ Liqui-Cel™ Membrane Contactors For Oxygen Removal

IMEC (Interuniversity Micro- Electronics Center) in Belgium is Europe's largest independent research center. It focuses on microelectronics, nanotechnology, and enabling design methods and technologies for ICT (Integrated Circuit Technology) systems. IMEC's research runs 3 to 10 years ahead of industrial needs.

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WATER MEMBRANES PRODUCTS

MEMBRAY® NHP-Series MBR MEMBRAY® NHP-Series MBR

As part of Toray’s MEMBRAY MBR series, the NHP (New High Performance) module features thin membrane flat sheets that are densely packed into easily interchangeable cassettes. These cassettes allow for a higher packing density than what was originally thought possible with flat plate designs. The thin membranes are also highly flexible and allow for more movement, resulting in increased vibrations during aeration. This helps dislodge sludge and improve cleaning efficiency, all with less energy use. 

Membrane Aerated Biofilm Reactors (MABR) Membrane Aerated Biofilm Reactors (MABR)

This revolutionary aerobic wastewater treatment solution is modular and reduces energy usage by up to 90% compared to conventional treatment.

eFLOW Series Antistatic Device For Ultra-pure Water eFLOW Series Antistatic Device For Ultra-pure Water

The eFLOW Series controls the specific resistance value of ultra-pure water by supplying carbon dioxide through a hollow fiber gas permeable membrane uniquely developed by DIC. This makes it possible to avoid dust re-adhering, and to prevent static electricity damage to the substrate pattern.

CSM Nanofiltration Membrane Elements CSM Nanofiltration Membrane Elements

CSM NF membranes selectively removes divalent and monovalent ions, making it ideal for a wide range of applications. Typical uses include production of food & beverage, dye recovery, and water softening and removal of specific impurities (i.e. color, DBP, THM) for potable use. CSM NF Membranes are constructed with either a polyamide or piperazine thin-film layer, and are available in various sizes. Inquire within for custom-engineered solutions.

SEPAREL® EF-120 Hollow Fiber Membrane Degassing Modules SEPAREL® EF-120 Hollow Fiber Membrane Degassing Modules

By employing the DIC Corporation's proprietary hollow fiber membrane, this module can operate in a vacuum of 20 torr or lower. It can obtain high oxygen removal performance even without using nitrogen and can reduce running costs.

Microfiber SureSeal Cartridges Microfiber SureSeal Cartridges

Harmsco microfiber cartridges are designed specifically for filter housings that utilize 4-1/2” O.D. high flow cartridges.

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WATER MEMBRANES PODCASTS

New Tools For Improving Membrane Bioreactors New Tools For Improving Membrane Bioreactors

Toray Membrane USA introduced an aptly-named product at WEFTEC 2017, the NHP (New High Performance) module for membrane bioreactors (MBRs). Toray's Peter Waldron sat down with Water Online to discuss how the NHP, which features thin membrane flat sheets densely packed into easily interchangeable cassettes, differs from current industry offerings and how these features benefit MBR operation.

Selecting The Right Membrane For The Job Selecting The Right Membrane For The Job

In this Water Online Radio exclusive interview, Fred Wiesler, Global Director of Sales for the QUA Group, discusses some of the company’s key products, including the EnviQ that uses a flat sheet PVDF membrane, and has a .04-micron pore size. It provides ultrafiltration quality water, with the strength of a PVDF flat sheet membrane.

Decentralized Membrane Treatment Technology Decentralized Membrane Treatment Technology

In the early 90s, Bio-Microbics introduced membrane treatment technology, traditionally used in drinking water treatment plants, to the decentralized treatment market. In this Water Online Radio interview, Jennifer Cisneros, Director of Marketing for Bio-Microbics and Chair of the National Onsite Wastewater Recycling Association’s Marketing Committee, discusses the use of the onsite technology at an oyster bar where Total Kjeldahl Nitrogen (TKN) was about three times the level of ammonia.

Next Generation Membranes For Water Reuse Next Generation Membranes For Water Reuse

Born out of UCLA and the California Inner Systems Institute, Water Planet is focused on revolutionizing water reuse through next generation membrane technology. As Erik Hoek, CEO of Water Planet, explains in this Water Online Radio interview, the company has two core technologies.

Ceramic Membrane Durability Attracts Attention Ceramic Membrane Durability Attracts Attention

Aqua-Aerobic recently merged with METAWATER USA, introducing the latter’s ozone and ceramic membrane technologies to the United States market. In this Water Online Radio interview, Dave Holland, Senior Applications Engineer with Aqua-Aerobic Systems, discusses the benefits of the new membrane, which he describes as “virtually unbreakable.”

Membrane Systems For Dirty Water Membrane Systems For Dirty Water

One of the leading water technology companies, Dow Water and Process Solutions, is pioneering ways to improve our water supply — by making the dirtiest waters clean again.

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WATER MEMBRANES VIDEOS

Protecting Water Resources: A Multifaceted Approach Protecting Water Resources: A Multifaceted Approach

As the cost of and demand for potable water increases, engineers, planners, and utilities need reliable, innovative methods for protecting this valuable resource. Cost-effective and environmentally sustainable wastewater collection and treatment systems are vital components in the water cycle and therefore require careful analysis. While there is no single solution for every site or community, traditional ‘big-pipe’ systems are rarely appropriate in sensitive environments; fortunately, today there are more options than ever to consider.

A Leader In Membrane Technology A Leader In Membrane Technology

3M is dedicated to the continued development and advancement of membrane technology. We also offer our technical expertise to support our customer from initial system design through module start-up and optimization. Watch the full video to learn more about our capabilities.

SEPAREL® PF Series SEPAREL® PF Series

The SEPAREL PF series removes dissolved gases in water through a tube-shaped gas permeable membrane composed of polytetrafluoroethylene (PTFE). Gasses dissolved in water flow through the tube and are removed due to the pressure difference of the gases inside and outside of the tube, thus creating a vacuum outside of the tube. This video explains how the PF series works.

SEPAREL® EF Series SEPAREL® EF Series

The SEPAREL EF series uses external flow which allows water to randomly flow over the hollow fibers and, in turn, contact dissolved gases more frequently. Therefore, desgassing performance with the EF series is higher than the PF series which utilizes internal flow. Also, a lower pressure drop means that larger modules can be used. This video explains how the EF series works.

Small SEPAREL® EF Series Small SEPAREL® EF Series

The small SEPAREL EF series is optimized to remove dissolved gases in water applications with smaller flow rates. The EF series uses external flow which allows water to randomly flow over the hollow fibers and, in turn, contact dissolved gases more frequently. Therefore, desgassing performance with the EF series is higher than the PF series which utilizes internal flow. This video explains how the EF series works.

SEPAREL® Hollow Fiber Membrane Modules For Liquid Degasification And Aeration SEPAREL® Hollow Fiber Membrane Modules For Liquid Degasification And Aeration

A proprietary technology of the DIC Corporation, SEPAREL hollow fiber membrane modules are optimized for degassing and aerating water. By utilizing an innovative surface skin layer, only gas can permeate in or out of the membrane. This video introduces the benefits of SEPAREL and where is it most commonly used.

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WATER MEMBRANES NEWS

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WATER MEMBRANES

 

Water membranes are widely used in the water treatment processes. They have become a fundamental player in separation technology because of the fact that they require no additional chemicals and their relatively low energy requirements.

Water membranes have been applied during the extraction of produced water, treatment of waste/sewage water and processing of surface water all with huge success levels. Conventional water treatment techniques are over time incorporating in their processes the use on water membranes. Commercialization of membranes was first done in the 1970s and 1980s.

Membrane technology is chiefly based on the presence of pores on the membranes that make them semi-permeable. The simple principle on which water membranes work is such that the semi-permeability of water membranes ensures that only water is allowed to pass through a specific membrane while trapping unwanted particles and substances.

In both microfiltration and ultra filtration, membranes provide an effective barrier for arresting suspended solids in water.

To aid substances to penetrate across a semi-permeable membrane the following steps are undertaken: Electric potential introduction, high pressure application and ensuring that the concentration gradient on both sides of the membrane is maintained. The surface area of the membrane also determines the efficiency of the membrane in use.

The only drawback on water membranes is that they cannot remove substances that are actually dissolved in the water such as phosphorus, nitrates and heavy metal ions. The following are categories of membranes: Microfiltration (MF), Ultra filtration (UF), Reverse osmosis (RO), and Nanofiltration (NF) membranes

Ultra filtration membranes employ polymer technology with chemically created microscopic pores that trap dissolved substances therefore eliminating the possible use of any coagulants.