Dow Water Solutions’ Portfolio of World-Class Component Technologies

Part of the Designed Polymers business unit of The Dow Chemical Company, Dow Water Solutions is a comprehensive global provider of water treatment and purification solutions based on a wide range of advanced technologies and services.
Dow Water Solutions’ products and technologies are used for a broad range of water and non-water treatment applications, including:
- Industrial and municipal water treatment
- Production of ultra pure water
- Commercial and home drinking water purification
- Sweetener processing
- Purification of foods, pharmaceuticals and other products.
- Targeted specialty applications.
Dow Water Solutions is focused primarily on high-end component technologies that are critical to the functionality of water purification systems. Further advances in Dow’s world-class component technologies, and their complementary utilization within integrated systems, will enable original equipment manufacturers (OEMs) to improve efficiency and drive down the cost of water treatment. Three notable applications whose growth will be fueled by these technologies are desalination, water re-use and small community potable water.
Dow Water Solutions is a leader in reverse osmosis (RO) and ion exchange (IX) technologies and products, and introduced its ADSORBSIA™ GTO™ arsenic removal media in March 2005. Through the acquisition of Omex Zhejiang Environmental Engineering Co. Ltd. (OEE) in July 2006, Dow Water Solutions gained three additional world-class component technologies, namely Ultrafiltration (UF), Electrodeionization (EDI), and Membrane Bio-Reactors (MBR), enhancing its portfolio.

Technologies

FILMTEC™ Reverse Osmosis (RO) and Nanofiltration (NF) Elements:
- Since the acquisition of FilmTec Corporation in 1985, Dow has become the leading global supplier and innovator of RO membrane technologies for the reduction and/or removal of impurities from water, including dissolved ions and minerals, as well as organic and pathogenic contaminants.
- Dow has maintained its leadership in the rapidly growing RO and NF market through constant innovation, scale and cost competitiveness of manufacturing processes, product quality and performance, outstanding technical service, and strong local relationships with OEM partners around the world.
- FILMTEC™ elements are based on proven FT30, thin-film composite, polyamide membrane technology. Elements are manufactured through a precise, automated fabrication process with advanced process control and integrated quality systems, ensuring consistent, high performance, reliable products.
- FILMTEC technology enables a robust, consistent membrane with the industry’s widest pH cleaning range. Automated precision fabrication enables elements with the highest active area, the industry’s widest feed spacer, shorter membrane leaves, consistent, high integrity construction and iLEC™ interlocking endcaps. Collectively these features enable consistent, reliable performance of RO systems, with reduced system capital and operating costs.
DOWEX™ Ion Exchange (IX) Resins:
- Dow has been a leading manufacturer and supplier of ion exchange (IX) resins from water for more than 50 years.
- DOWEX™ ion exchange resins include a broad line of products for use in industrial processing water, drinking water, food and pharmaceutical processing, and power generation.
- With decades of technical expertise, Dow is a pioneer in IX uniform particle size (UPS) technology, leading to improved resin efficiency and contaminant removal performance.
ADSORBSIA™ GTO™ Titanium-based Arsenic Removal Media:
- Introduced in March 2005, ADSORBSIA GTO media exhibits the fastest kinetics and highest capacity media over a wide range of water conditions, offering improved performance and cost advantages in arsenic removal over both activated alumina and iron oxide-based adsorbent media.
- Based on a Dow proprietary production process, ADSORBSIA GTO arsenic removal media is easy to use and dispose of, helping municipalities cost-effectively meet new United States Environmental Protection Agency (EPA) regulations that require municipal drinking water systems in the United States to have arsenic levels below 10 parts per billion (ppb).
Pressurized Ultrafiltration (UF) Technology:
- Ultrafiltration (UF) is a pressure-driven membrane separation process that separates particulate matter from soluble components in the carrier fluid (such as water).
- With the acquisition of Zhejiang Omex Environmental Engineering Co. Ltd. (OEE) in 2006, Dow Water Solutions has become a world-class manufacturer of innovative UF membrane modules for the removal of bacteria, viruses and other pathogens in a wide range of water treatment applications.
- Dow gained a range of products for use in RO pre-treatment, water re-use and drinking water applications.
- Dow’s UF modules utilize a double-walled hollow fiber (capillary) membrane using polyvinylidenefluoride (PVDF) as the base material, producing strong fibers.
- Dow’s PVDF membrane has the smallest nominal pore diameter in the water treatment industry for PVDF materials, which enables the removal of all particulate matter.
- Membranes have a very high porosity, resulting in a flux similar to that of microfiltration (MF), and can effectively replace MF in most cases.
Electrodeionization (EDI) Technology:
- Dow’s acquisition of OEE included patented Electrodeionization (EDI) technology – a chemical-free separation process that combines electrodialysis and conventional ion
- Exchange for demanding applications that require reliable, economical removal of ionic contaminants from aqueous streams without the use of hazardous chemicals. It is typically used to polish RO permeate and to replace conventional mixed bed ion exchange.
- Extensively used in combination with reverse osmosis where high-purity water is critical – including the electronics, pharmaceutical and power generation industries – Dow’s EDI technology is the only system that allows on-site replacement of membrane and resin, making it a more forgiving operation with higher feed water hardness tolerance.
- The EDI module utilizes a patented spiral wound membrane, leading to optimal performance, efficiency and reliability.
- The unique flow design makes the EDI modules much more resistant to hardness scaling, allowing for higher hardness concentrations of the feed water and reducing capital expenditures by routinely eliminating the need for softeners and/or second pass reverse osmosis (RO).
- Cost effective alternative to mixed bed ion exchange for new equipment.
Membrane Bio-Reactor (MBR) Membranes:
- Dow’s acquisition of OEE included leading MBR technology, which combines biological treatment with membrane filtration in an activated sludge process used to biodegrade dissolved and suspended pollutants from agricultural, municipal and industrial waste water streams.
- The MBR process, compared to a conventional activated sludge process, runs at a higher mixed liquor suspended solids (MLSS) and sludge age; this leads to better biodegradation of soluble organic compounds.
- MBR is used in combination with ultrafiltration membranes, which continuously remove the treated water while retaining the purifying bacteria.
- Innovative flexible design reduces stress on fiber, leading to longer fiber and module life.
- Light module weight contributes to easy handling options; easy module replacement prevents temporary shutdowns.
Component Technology Integration:
- With its broader portfolio of complementary technologies, Dow Water Solutions can optimize the performance of its components when used together, addressing target market needs.
- Whether used as stand-alone products or integrated together, Dow’s component technologies will help OEMs drive down the cost of high-purity water, allowing them to be more competitive and stimulate market growth.
- Dow Water Solutions’ world-class component technologies are critical to the functionality and cost-effectiveness of water purification systems worldwide.


FILMTEC Membranes DOWEX Ion Exchange Resins ADSORBSIA GTO Ultrafiltration (UF) Electrodeionization (EDI) Answer Center Contact Us Current News FILMTEC Membranes Photo Catalog DOWEX Ion Exchange Resins Photo Catalog Feature Articles Videos Download Software Literature Product Selection Guide via the Periodic Table Regulatory / Certifications / MSDS Request Information Regarding Our Sample Process Subscribe for Info Training Where to Buy Dow Water Solutions Home	Dow Water Solutions’ Portfolio of World-Class Component Technologies Part of the Designed Polymers business unit of The Dow Chemical Company, Dow Water Solutions is a comprehensive global provider of water treatment and purification solutions based on a wide range of advanced technologies and services. Dow Water Solutions’ products and technologies are used for a broad range of water and non-water treatment applications, including: Industrial and municipal water treatment Production of ultra pure water Commercial and home drinking water purification Sweetener processing Purification of foods, pharmaceuticals and other products. Targeted specialty applications. Dow Water Solutions is focused primarily on high-end component technologies that are critical to the functionality of water purification systems. Further advances in Dow’s world-class component technologies, and their complementary utilization within integrated systems, will enable original equipment manufacturers (OEMs) to improve efficiency and drive down the cost of water treatment. Three notable applications whose growth will be fueled by these technologies are desalination, water re-use and small community potable water. Dow Water Solutions is a leader in reverse osmosis (RO) and ion exchange (IX) technologies and products, and introduced its ADSORBSIA™ GTO™ arsenic removal media in March 2005. Through the acquisition of Omex Zhejiang Environmental Engineering Co. Ltd. (OEE) in July 2006, Dow Water Solutions gained three additional world-class component technologies, namely Ultrafiltration (UF), Electrodeionization (EDI), and Membrane Bio-Reactors (MBR), enhancing its portfolio. Technologies FILMTEC™ Reverse Osmosis (RO) and Nanofiltration (NF) Elements: Since the acquisition of FilmTec Corporation in 1985, Dow has become the leading global supplier and innovator of RO membrane technologies for the reduction and/or removal of impurities from water, including dissolved ions and minerals, as well as organic and pathogenic contaminants. Dow has maintained its leadership in the rapidly growing RO and NF market through constant innovation, scale and cost competitiveness of manufacturing processes, product quality and performance, outstanding technical service, and strong local relationships with OEM partners around the world. FILMTEC™ elements are based on proven FT30, thin-film composite, polyamide membrane technology. Elements are manufactured through a precise, automated fabrication process with advanced process control and integrated quality systems, ensuring consistent, high performance, reliable products. FILMTEC technology enables a robust, consistent membrane with the industry’s widest pH cleaning range. Automated precision fabrication enables elements with the highest active area, the industry’s widest feed spacer, shorter membrane leaves, consistent, high integrity construction and iLEC™ interlocking endcaps. Collectively these features enable consistent, reliable performance of RO systems, with reduced system capital and operating costs. DOWEX™ Ion Exchange (IX) Resins: Dow has been a leading manufacturer and supplier of ion exchange (IX) resins from water for more than 50 years. DOWEX™ ion exchange resins include a broad line of products for use in industrial processing water, drinking water, food and pharmaceutical processing, and power generation. With decades of technical expertise, Dow is a pioneer in IX uniform particle size (UPS) technology, leading to improved resin efficiency and contaminant removal performance. ADSORBSIA™ GTO™ Titanium-based Arsenic Removal Media: Introduced in March 2005, ADSORBSIA GTO media exhibits the fastest kinetics and highest capacity media over a wide range of water conditions, offering improved performance and cost advantages in arsenic removal over both activated alumina and iron oxide-based adsorbent media. Based on a Dow proprietary production process, ADSORBSIA GTO arsenic removal media is easy to use and dispose of, helping municipalities cost-effectively meet new United States Environmental Protection Agency (EPA) regulations that require municipal drinking water systems in the United States to have arsenic levels below 10 parts per billion (ppb). Pressurized Ultrafiltration (UF) Technology: Ultrafiltration (UF) is a pressure-driven membrane separation process that separates particulate matter from soluble components in the carrier fluid (such as water). With the acquisition of Zhejiang Omex Environmental Engineering Co. Ltd. (OEE) in 2006, Dow Water Solutions has become a world-class manufacturer of innovative UF membrane modules for the removal of bacteria, viruses and other pathogens in a wide range of water treatment applications. Dow gained a range of products for use in RO pre-treatment, water re-use and drinking water applications. Dow’s UF modules utilize a double-walled hollow fiber (capillary) membrane using polyvinylidenefluoride (PVDF) as the base material, producing strong fibers. Dow’s PVDF membrane has the smallest nominal pore diameter in the water treatment industry for PVDF materials, which enables the removal of all particulate matter. Membranes have a very high porosity, resulting in a flux similar to that of microfiltration (MF), and can effectively replace MF in most cases. Electrodeionization (EDI) Technology: Dow’s acquisition of OEE included patented Electrodeionization (EDI) technology – a chemical-free separation process that combines electrodialysis and conventional ion Exchange for demanding applications that require reliable, economical removal of ionic contaminants from aqueous streams without the use of hazardous chemicals. It is typically used to polish RO permeate and to replace conventional mixed bed ion exchange. Extensively used in combination with reverse osmosis where high-purity water is critical – including the electronics, pharmaceutical and power generation industries – Dow’s EDI technology is the only system that allows on-site replacement of membrane and resin, making it a more forgiving operation with higher feed water hardness tolerance. The EDI module utilizes a patented spiral wound membrane, leading to optimal performance, efficiency and reliability. The unique flow design makes the EDI modules much more resistant to hardness scaling, allowing for higher hardness concentrations of the feed water and reducing capital expenditures by routinely eliminating the need for softeners and/or second pass reverse osmosis (RO). Cost effective alternative to mixed bed ion exchange for new equipment. Membrane Bio-Reactor (MBR) Membranes: Dow’s acquisition of OEE included leading MBR technology, which combines biological treatment with membrane filtration in an activated sludge process used to biodegrade dissolved and suspended pollutants from agricultural, municipal and industrial waste water streams. The MBR process, compared to a conventional activated sludge process, runs at a higher mixed liquor suspended solids (MLSS) and sludge age; this leads to better biodegradation of soluble organic compounds. MBR is used in combination with ultrafiltration membranes, which continuously remove the treated water while retaining the purifying bacteria. Innovative flexible design reduces stress on fiber, leading to longer fiber and module life. Light module weight contributes to easy handling options; easy module replacement prevents temporary shutdowns. Component Technology Integration: With its broader portfolio of complementary technologies, Dow Water Solutions can optimize the performance of its components when used together, addressing target market needs. Whether used as stand-alone products or integrated together, Dow’s component technologies will help OEMs drive down the cost of high-purity water, allowing them to be more competitive and stimulate market growth. Dow Water Solutions’ world-class component technologies are critical to the functionality and cost-effectiveness of water purification systems worldwide.
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