The process of turning salt water into fresh water requires a significant amount of energy and significant capital expenditure. Energy Recovery devices like the PX Pressure Exchanger and the AT Turbocharger help desalination plants run more efficiently and more profitably.
A Precious Resource
Population growth and climate change are increasing the demand for fresh water around the world, yet apart from seasonal variations, supplies of fresh water remain fixed and cannot keep pace with the growing demand.
Desalination of ocean and brackish water represents a solution to our water needs. In many parts of the world, it already contributes significantly to the freshwater supply. But the costs of desalination can be high. Plants are expensive to operate and can consume a lot of energy.
Changing the Industry
At Energy Recovery, we’ve worked hard to pioneer technologies that make desalination economically viable and environmentally sustainable. Over more than a quarter of a century, our systems have revolutionized the water industry, and are now the preferred technologies for desalination projects everywhere.
Plants using Energy Recovery devices currently produce more than 3 billion gallons of clean water every day and save more than $1.4 billion annually on their energy expenses. Our products also reduce plant lifecycle costs thanks to their durability and reliability.
Efficient and Indestructible
Chief among these products is the PX Pressure Exchanger, which works by recycling energy that would otherwise be lost in the desalination process. Specifically, it captures hydraulic energy from the high-pressure reject stream of seawater and then transfers this energy to low-pressure feed water. The PX accomplishes this feat with an efficiency of 98 percent and requires no electrical power. The result is a drastic reduction in energy consumption over previous methods.
We designed the PX Pressure Exchanger so that it features only one moving part, and we manufacture that part out of a high-purity, corrosion-proof ceramic that’s three times more abrasion-resistant than steel. It provides unmatched durability, and its simplicity allows for optimum scalability, quick startup, and virtually no required maintenance. In fact, many of our PX devices have been in operation for as long as 12 years without interruption.
Complementing the PX Pressure Exchangers is our family of Turbochargers. Designed for reliability and optimum efficiency, they’re suitable for both high pressure seawater and low pressure brackish reverse-osmosis systems. They offer substantial savings for lower investment solutions, especially in locations where power costs are heavily subsidized or there’s a need to mitigate upfront capital or equipment costs.
With more than 15,000 Energy Recovery devices installed, including at some of the world’s largest desalination plants, our technologies have transformed the water industry and helped make converting salt water to fresh water a viable economic solution to global climate change and clean water shortages.