Current desalination technologies require large amounts of energy and emit GHGs. Reverse osmosis desalination plants require 5.1 kilowatts and produce 5.7 kilograms of GHGe per 1,000 liters of production. For this reason reverse osmosis co-generation plants often use the waste steam heat and electricity from oil-fired power stations. Desalination plants are also built on a large scale and typically discharge waste brine directly into the ocean, a sewer or sewage treatment plant or into a landfill after drying. For example, the City of Santa Barbara's large desalination plant discharges approximately 10 million gallons per day of waste brine (with salinity approximately 1.8 times that of seawater) while producing approximately 6.7 million gallons per day of fresh water.
Our desalination technologies provide stand alone, high volume per capital outlay of potable water from seawater, saline or brackish waters.
In addition to the economic and environmental benefits provided by our energy-efficient technologies, our systems demonstrate the following attributes which are uniquely attractive to the desalination industry:
- Our facilities produce electricity internally allowing them the flexibility to operate stand-alone and independent from the power grid, reducing the need to upgrade power grid infrastructure.
- Power produced can be used for vapour recompression, distillation, finishing and other systems as desired, providing for overall system use of more than 85% of the energy in the fuel input.
- Our facilities can be operated as a single unit for small-scale operation or, if capacity requirements dictate, multiple units can be installed at a site for efficient and cost effective production rather than scaling up the designs. The redundancy of multiple units increases operating reliability. This flexibility allows distributed, self contained, stand alone units, highly desirable in these industries.
- In the case of seawater our only by-product is marketable sea salt, eliminating the requirement for brine waste disposal, a typical problem of most systems.