Energy Recovery, Inc.
Energy Recovery Inc (ERI) designs and develops energy recovery devices that help make desalination affordable by significantly reducing energy consumption. Energy Recovery technologies include the PX Pressure Exchanger(TM) (PX(TM)) device for desalination and the Turbocharger hydraulic turbine energy recovery device and pump for desalination, gas and liquid processing applications. In total, Energy Recovery helps reduce CO2 emissions by more than 4.7 million tons per year and produce 1.6 billion gallons of potable water per day. The company is headquartered in the San Francisco Bay Area with offices in Detroit and in key desalination centers worldwide, including Madrid, Shanghai, and the United Arab Emirates. For more information about Energy Recovery Inc please visit www.energyrecovery.com.
The company has research, development and manufacturing facilities in the San Francisco technology corridor as well as direct sales offices and technical support centers in key desalination hubs such as Madrid, UAE, Shanghai and Florida; including service representatives in Algeria, Australia, China, India, Korea, Mexico, Taiwan and the Caribbean.
As the demand for clean, potable water increases; ERI is poised to face the global challenges ahead. For more information on ERI and PX technology, please visit our web site at www.energyrecovery.com
Humanity faces a global water supply crisis. Less than 1% of all fresh water is readily accessible for human use and more than 1.8 billion people lack adequate access to drinking water. As water extraction levels from rivers, lakes, and aquifers approach historically maximum levels, water scarcity remains a serious concern across the globe. Entire regions in North Africa, as well as Australia and the Indian subcontinent, are unable to meet the water demands of urban areas and local farmers. Dwindling water supply is also an issue here in the United States. This decline has tripled water rates and increased water rationing in San Diego and other municipalities along the California coastline.
To help mitigate this mounting scarcity, the process of converting seawater into freshwater emerged as a potential source of new and abundant supply. However, older methods of desalinating seawater consumed significant amounts of energy, and historically desalination has been an unaffordable, impractical solution for most regions.
Now, Energy Recovery, Inc. (ERI) has designed and developed an innovative technology that dramatically reduces the energy required for seawater desalination.
ERI's Pressure Exchanger™ (PX™) device recycles much of the energy used in seawater desalination by continually reclaiming the otherwise lost pressure energy from the reject or brine water with to up to 98% efficiency. This improves the energy efficiency of seawater reverse osmosis (SWRO) by up to 60%, making desalination an affordable, sustainable option to address the world's water crisis.
The ERI PX device design is simple yet elegant. It is a free-wheeling pump constructed from a unique ceramic material made from aluminum oxide, which is sintered at high temperatures. This results in a construction material that is three times tougher than steel and does not corrode in seawater. The sapphire-like material makes the PX device a very reliable, low-maintenance solution, which has captured 70% of global market share in newly constructed large desalination plants worldwide.
The revolutionary PX device controls and balances the core processing center of a modern desalination plant, serving as its hydraulic CPU. The PX device allows designers and operators to re-adjust operating conditions in desalination membranes as salinity and temperature conditions change with the seasons or as performance changes with normal wear. These PX operating adjustments assure that the high-pressure pumps are always running at their most efficient operating point.
This is significant because in a typical desalination plant the large electric motors driving these pumps consume dozens of megawatts of energy. Every percent of improvement in efficiency means millions of dollars in energy savings over the life of the plant; thus enabling large desalination plants-often called "water factories"-to affordably supply much of the demand for fresh-water to cities like Chennai (India), Perth (Australia), Algiers (North Africa) and Barcelona (Spain).
ERI's PX devices currently save more than 750 megawatts of energy and are reducing CO2 emissions by more than 4.6 million tons per year. More than 7,000 PX devices are in the market, supporting the production of drinking water for an estimated 25 million people globally.
ERI's PX Pressure Exchanger™ (PX™) is an innovative technology that can reduce the amount of energy required in seawater desalination by up to 60%, resulting in more economical production of drinking water and a reduced carbon footprint.
ERI's PX devices, which feature only one moving part, are the most elegant approach to high-efficiency energy recovery available today. The heart of the PX is an aluminum oxide rotor, floating in an almost frictionless hydrodynamic bearing. This ceramic material is unaffected by chemicals, is three times harder than steel, and does not corrode. The bearing is continuously lubricated by seawater, requires no maintenance, and is not subject to wear.
The invention and development of the PX device has led to seven US patents, in addition to international patents, trademarks and numerous awards.
How It Works
The PX energy recovery device uses the principle of positive displacement and isobaric chambers to achieve extremely efficient transfer of energy from a high pressure waste stream, such as the brine stream from a reverse osmosis desalination unit, to a low-pressure incoming feed stream. Virtually no energy is lost in the transfer.
How It Works:
Click here to watch a video about the PX energy recovery device
The heart of the PX device is a ceramic rotor floating in an almost frictionless hydrodynamic bearing. Inside the rotor are channels in which the concentrate from the membranes and fresh salt water come into direct, momentary contact. The rotor is turned by the momentum of the water at a speed that adjusts to flow variations to provide nearly-constant high efficiency over a wide operating range.
There are no pistons between the concentrate and the fresh salt water, but the rotor and associated components keep high and low pressure separate, thereby sealing the high pressure portion of the SWRO process.
ERI's PX™ devices are saving more than 750 megawatts of power globally and reducing CO2 emissions by more than 4.6 million tons annually. They are supporting the production of more than 6.3 million m3 per day, which is enough drinking water for approximately 25 million people.
Seawater reverse osmosis (SWRO), a process that converts seawater to (potable) drinking quality water, is a major market for ERI. Almost every SWRO plant being built today utilizes some type of energy recovery device (ERD) to improve energy efficiency, with ERI's PX devices being the preferred choice in many instances.
While a vital purpose of desalination is the production of water for drinking, SWRO is also being used to provide process water for industrial applications, such as steel and mining. Industrial consumption accounts for 15-20% of all water usage, averaged worldwide, and many industries obtain the water they need using SWRO. ERI's PX devices are helping improve the cost of the products of these industrial processes by making desalination affordable.
From Istanbul's steel mining plants to Australia's iron ore industry, PX Technology offers a durable, reliable and highly efficient solution to address the water needs of many.
Energy Recovery Inc Named 'Game Changer' of the Year
Honored as One of California's Most Innovative Clean Tech Businesses
SAN LEANDRO, Calif., Oct 19, 2011 (BUSINESS WIRE) -- Energy Recovery Inc (NASDAQ:ERII), a leader in the design and development of energy recovery devices for desalination and other industrial processes, has been selected as a California Clean Technology "Game Changer" for 2011 in the category of Innovation in Energy and Water by Grow-California for its leadership, innovation and impact on California's clean tech industry and economy. The company will receive its "Game Changer" award at the conclusion of the Clean Tech Innovation Conference at the Kaiser Center, in downtown Oakland, to be held on November 2nd and 3rd.
"We are pleased to receive the 'Game Changer' of the year award for our innovative PX energy recovery technology. It is rewarding to be able to reduce energy consumption while also helping to produce billions of gallons of water for millions of people around the world," said Tom Rooney, president and CEO of ERI. "To be in the same company as important 'green' contributors such as Google, Tesla and others is an honor."
Clean technology is considered a key strategy across the nation and throughout the world to create much-needed jobs, improve the economy and lessen the demand for fossil fuels.
"This company is a prime example of a true game changer in the clean tech space," said Jon Gregory, president and CEO of Grow California. He added, "There were more than 200 quality companies nominated which means that the 2011 Game Changes are an elite group and an excellent representation of California's leading role in the world's clean tech industry."
For more information about the California Clean Tech conference and the "Game Changer of the Year" awards, visit: http://www.grow-california.com.
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