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Dow Introduces New FILMTEC ECO Reverse Osmosis Elements

Next-generation membrane technology facilitates lower energy usage and reduced regeneration costs for industrial plants Dow Water & Process Solutions (DW&PS), a business unit of The Dow Chemical Company (NYSE:DOW), today globally introduced DOW FILMTEC™ ECO Reverse Osmosis (RO) elements. Dow scientists focused their research on energy efficiency in current RO membranes and found that through configurational energy and element design, further energy savings could be realized. The new FILMTEC ECO elements combine new membrane chemistry and low dP feed spacers to help deliver notably lower energy costs and reduced chemical consumption when RO is followed by a mixed bed ion exchange unit. Offering exceptional rejection and low energy consumption (99.7 percent at 150 psi), FILMTEC ECO elements are intended to deliver up to 40 percent lower salt passage at up to 30 percent less energy when compared to standard RO elements. FILMTEC ECO elements are offered in ECO-400i and ECO-440i configurations to match reverse osmosis needs on a broad spectrum. “Plants that switch from conventional reverse osmosis elements to FILMTEC ECO join a unique population of thriving plants that have less impact on the environment and less strain on their bottom line,” said Rajat Mehta, global product director for Dow Water & Process Solutions. “We are thrilled to provide our customers with exceptional rejection and flow performance, while also positively impacting their ecological and economic footprints.” Customers using FILMTEC ECO elements have the ability to achieve: Improved uptime and reduced chemical use for utility providers; Increased rejection at lower feed pressure to accommodate purity needs for electronics manufacturing; Savings on energy use and chemical use and increased capacity by... read more

Distilled From Water, Designer or Tap: High Anxiety

The boom in designer water has brought us not only hundreds of varieties from every place from Serbia to Brazil to South Africa, but also the advent of water sommeliers, water bars and Web site guides to fine waters from around the world. There are waters from springs, wells, glaciers and icebergs, as well as Tasmanian rainwater and melted Italian snow water. There are waters enhanced with minerals, vitamins and proteins, and even waters that have been vibrated at frequencies meant to stimulate health and spiritual well-being. For the conspicuous consumer there is $40-a-bottle Bling H2O, which comes in containers decorated with Swarovski crystals, and for the guilty consumer there is Ethos Water, which helps support water projects in poor countries. In 2006 some eight billion gallons of bottled water were sold in America, and the $11 billion market welcomed 140 new products to the shelves. The year before, the bottled water industry spent $158 million on advertising in the United States alone.   In her fascinating if not terribly comprehensive new book, “Bottlemania,” Elizabeth Royte looks at the water wars: between bottled water and tap water, between big corporations and local water interests, between consumers who say they want the convenience, cleanliness and even status of bottled water, and environmentalists who condemn bottled water as “the moral equivalent of driving a Hummer,” producing tons of plastic bottles, racking up huge transportation fees and leaving behind a significant carbon footprint. Her book does not profile a full array of bottled waters, nor does it delve in detail into water battles around the world. Instead Ms. Royte uses the story... read more

Desalitech water purification system revives brackish aquifer

As California farmers face zero water allocations following one of the driest periods on record in the US state, one central valley farm is partnering with Desalitech, the supplier of high-efficiency water solutions, to irrigate farmland from a brackish aquifer in the San Joaquin Valley. This aquifer is one of California’s largest, but due to increasing salinity levels after decades of pumping and drought, it has been rendered unusable for many kinds of agriculture. Fabbri Ag Services is using a Desalitech ReFlex reverse osmosis system featuring Closed Circuit Desalination (CCD) technology to provide affordable irrigation water and minimise waste generation and energy consumption. By utilising a dormant brackish aquifer, Fabbri Ag Services is making efficient use of local water resources without burdening the state’s already strained reservoir system. The installed Desalitech reverse osmosis system provides Fabbri with 300 gallons per minute of irrigation water to supply about 40 acres of land at a farm near Bakersfield, California. The water it produces is highly pure so that it can be used to support high value crops like almonds and grapes. “Water is essential for agriculture,” said Jeff Fabbri, CEO of Fabbri Ag Services. ”Desalitech is providing a lifeline that will help us sustain crops when drought conditions persist and water deliveries are halted. Desalitech’s solutions are uniquely capable of purifying water with variable composition, making it possible for us to use this abundant but poor water source. We are able to maximise water use efficiency and consume less energy than with any other system we’ve seen. Desalting the aquifer represents a sustainability plan that will let us diversify our water... read more

Can California Desalinate Its Way Out of a Drought

A ferry plows along San Francisco Bay, trailing a tail of churned up salt, sand, and sludge and further fouling the already murky liquid that John Webley intends to turn into drinking water. But Webley, CEO of a Bay Area start-up working on a new, energy-skimping desalination system, isn’t perturbed. 

“Look at the color of this intake,” he says, pointing to a tube feeding brown fluid into a device the size of a home furnace. There, through a process called forward osmosis, a novel solution the company developed pulls water molecules across a membrane, leaving salt and impurities behind. When low temperature heat is applied, the bioengineered solution separates out like oil, allowing clean water to be siphoned off. This method uses less than a quarter of the electricity needed for standard desalination, making it easier for the technology to run on renewable power, said Webley. His company, Trevi Systems, recently won an international low-energy desalination competition and is building a pilot solar plant to desalinate seawater in the United Arab Emirates. 

With world water demands rising and extreme droughts like the one now gripping California expected to grow more frequent and widespread as the climate warms, drawing fresh water from oceans and other salty sources will be increasingly important. “Eventually, we’ll have to develop new sources of water,” said David Sedlak, a University of California, Berkeley, professor of civil and environmental engineering and author of Water 4.0: The Past, Present and Future of the World’s Most Vital Resource. Desalination, along with wastewater recycling and capturing and storing rainwater, will be “three main pillars,” he said, to replace “water supplies that are going to... read more

Hitachi, Toray find new ways to slash desalination costs

TOKYO — Hitachi and Toray Industries are moving forward with water desalination technologies that can cut energy consumption by 30-40%, making treatment less expensive and more accessible for emerging markets with a growing need for water. A plant developed by Hitachi dilutes seawater with treated sewage, halving the salt concentration, before purifying it through reverse osmosis. This reduces the pressure applied to the membrane, lowering the electricity required by 40%. Operational costs, including chemicals and plant maintenance, can be cut about 40% as well. The technology is expected to find applications mainly in industrial water. Current desalination processes generate brine with double the salt concentration of ordinary seawater as a byproduct. The continued release of brine into a small part of the ocean could affect the local ecosystem. Hitachi’s new process generates brine with roughly the same salt content as ordinary seawater, minimizing the burden on the environment. A plant with a daily processing capacity in the tens of thousands of tons would cost 5 billion yen to 7 billion yen ($48.31 million to $67.63 million) — not significantly more than a conventional plant. It would require just 2.6 kilowatt-hours per cu. meter of water. Toray has announced a reverse-osmosis membrane with 1.5 times as many holes for water to flow through. The pressure needed goes down by one-third, cutting power usage by 30%. The membrane will hit the market as early as this year, likely costing somewhat more than conventional products. It lasts twice to 10 times as long in tests, according to Toray, thanks to increased resistance to cleaning chemicals. Anticipated uses include processing water from inland... read more

RO Terms

Anti-telescoping device (ATD):  An anti-telescoping device or ATD is a plastic device located on the ends of a reverse osmosis membrane element in order to prevent the membrane from telescoping under pressure. Concentrate or Brine:  Concentrate or Brine is the water that did not pass through the semipermeable membrane and is rejected with a high concentration of contaminants. Dry Membrane:  A dry membrane has not been tested for quality assurance and has not touched water therefore is dry. Envelope:  One sheet of permeate water carrier sealed on three sides within a folded sheet of membrane. Feed water:  The original water supply that enters the RO system before any of the contaminants are removed. Membrane casting:  Casting is the technique used to produce membranes. Membrane Element:  All membranes are cast inside of what is called the membrane element.       Permeate:  Permeate is the product water that passed through the semipermeable membrane and is now pure water free of most contaminants.     PPM:  Total dissolved solids which are present in the water supply are measured in parts per million (ppm) which is a common unit of measurement for concentration.     psi:  Pound per Square Inch and is a common unit of measurement for pressure.     Reverse Osmosis:  Reverse Osmosis is a water treatment technique which removes 99.99% of water contaminants using pressure to force water through a semipermeable membrane filtering out contaminants.     Salt Flux/Salt Passage:  Salt Flux or Salt Passage refers to the amount of contaminants that pass through the membrane (less than 1% with RO).     TDS:  TDS stands for the Total Dissolved Solids present in... read more

What is Reverse Osmosis?

A semipermeable membrane is the substance used in all RO Membranes. Water enters the human body by passing through a semipermeable membrane in the digestive track.  The Membranes used for Reverse Osmosis are synthetic semipermeable membranes which allow water to pass through but filter out most contaminants. What is Osmosis? Osmosis is the natural movement of water molecules from a lower to a higher concentration of salt particles through a semipermeable membrane. However, when pressure is applied to the side of higher concentration of dissolved solids, there will be a greater amount of net movement to the lower concentration side.  This is Reverse Osmosis. The undesirable dissolved and suspended substances will not pass through the semipermeable membrane leaving the permeate or product water 99.99% pure H2O. For commonly used Reverse Osmosis terms click here RO TERMS Please comment below this article with an insight or question you have and fill in your name to receive future articles in your inbox.        ... read more

Dow FilmTec TW30-4021

Dow FilmTec TW30-4021 Western RO, Inc is a supplier of Pentair products, Hydranautics, Dow FilmTec, GE, Toray and other types of RO membranes and filters. read more

Dow FilmTec TW30-2026

Welcome to Western RO. Our company is a supplier of Hydranautics, FilmTec, Ge, Toray RO Membranes and Filters. We have been in business for 4 years and are headquarter is in San Diego, CA. We ship our products globally all over the world including Mexico, South America, Canada, Australia, Middle East and... read more

Dow invests in manufacturing facility for DOW FILMTEC RO elements in China

SHANGHAI, China — The Dow Chemical Company announced plans to invest in a world-class manufacturing facility for DOW FILMTEC™ reverse osmosis (RO) elements in Huzhou, China. The new facility will be online in 2013, according to a press release. “This investment is directly aligned to our growth strategy to maximize value as a leading science company, benefiting our customers in China and the China economy, while contributing to Dow’s global growth,” said Peter Sykes, president of Dow Greater China. “Dow Greater China is built on a solid foundation and we’re very confident about our ability to contribute to the China market and customer growth with a business focus which fits China’s 12th Five-Year plan.” The proposed facility would deliver local supply security of cutting-edge technology for water desalination and waste water reuse for potable, non-potable and industrial water serving China. The facility would also serve as a sourcing point for global demand, boosting supply of Dow’s world-class products worldwide. Additionally, these water technologies will deliver cost-savings through reduced energy usage and excellent operational efficiencies for global customers. The facility joins Dow’s ultrafiltration manufacturing facility in Huzhou and ion exchange resin facility in Qingpu, which supply global, market leading products. “Dow invests in manufacturing facility for DOW FILMTEC RO elements in China “Water Tech Online. Com”. 1/10/14 accessed.... read more

Clean Water Crisis

The water you drink today has likely been around in one form or another since dinosaurs roamed the Earth, hundreds of millions of years ago. While the amount of freshwater on the planet has remained fairly constant over time—continually recycled through the atmosphere and back into our cups—the population has exploded. This means that every year competition for a clean, copious supply of water for drinking, cooking, bathing, and sustaining life intensifies. Water scarcity is an abstract concept to many and a stark reality for others. It is the result of myriad environmental, political, economic, and social forces. Freshwater makes up a very small fraction of all water on the planet. While nearly 70 percent of the world is covered by water, only 2.5 percent of it is fresh. The rest is saline and ocean-based. Even then, just 1 percent of our freshwater is easily accessible, with much of it trapped in glaciers and snowfields. In essence, only 0.007 percent of the planet’s water is available to fuel and feed its 6.8 billion people. Due to geography, climate, engineering, regulation, and competition for resources, some regions seem relatively flush with freshwater, while others face drought and debilitating pollution. In much of the developing world, clean water is either hard to come by or a commodity that requires laborious work or significant currency to obtain. Water Is Life Wherever they are, people need water to survive. Not only is the human body 60 percent water, the resource is also essential for producing food, clothing, and computers, moving our waste stream, and keeping us and the environment healthy. Unfortunately, humans have... read more

A desalination boom in California could help it deal with ‘exceptional’ drought

What really happened to our tap and underground water sources? Adaptation to changing weather patterns is a principal driver that underpins a multi-decade opportunity when considering investments in the water sector. As the increasing unpredictability of weather patterns leads governments and municipalities to look at new water infrastructure investments, drought-ravaged California could be a large potential contributor to the 19% annual growth expectations in global desalination market. With an approximate global capacity of nearly 80m cubic meters per day, about 1% of fresh water consumed globally is derived from desalination. Traditionally this technique has been associated with the oil rich Gulf States such as the United Arab Emirates, Kuwait and Saudi Arabia, where low energy costs have driven thermal desalination which is based on evaporation and the subsequent condensation of the steam as potable water. Energy consumption, traditionally high with desalination, has been significantly reduced in the past two decades, partly due to the widespread uptake of reverse osmosis technology (RO). This process removes the salt by filtration, using membrane technology. RO now accounts for nearly 60% of global desalination capacity. The International Desalination Association (IDA) has challenged the industry to achieve a further reduction of 20% in energy requirements for seawater desalination by 2015 – to be achieved through a combination of the integration of renewable energy, the use of lower pressure solutions and potential advances in membrane technologies. Incumbent technology providers to the industry include membrane manufacturers such as industrial and chemical giants Siemens and Dow Chemical, as well as smaller players including Japanese group Kubota or US filtration membrane specialist Pall Corporation and the Treatment Technologies... read more