Catalog Record

Report from S&T Project 8133: An Ultra-low-cost Thermal Energy Storage System using Reverse Osmosis Concentrate

The reject of the reverse osmosis water treatment process (aka brine, concentrate, ROC) is a mixture of salts that are dissolved in high salinity water. The ROC is classified as an industrial waste by the U.S. Environmental Protection Agency and can face regulatory limitations on disposal. State-of-the-art of ROC disposal includes deep-well injection, surface discharge to rivers, discharge to the ocean, and evaporation ponds. In this study, the feasibility of using Reverse Osmosis Concentrate as a low-cost Thermal Energy Storage (TES) medium is explored by a techno-economic analysis. The normalized cost of TES (cost per unit volume of stored thermal energy) is estimated through a series of cost analyses and is compared to the cost targets of the U.S. Department of Energy for low-cost thermal energy storage. It was shown that the normalized cost of TES using ROC salt content is in the range of $6.11 to $8.73 per kilowatt-hours (kWh) depending on ROC processing methods.
Generation Effort S&T Project 8133: An Ultra-low-cost Thermal Energy Storage System using Reverse Osmosis Concentrate
Location Worldwide
Themes Water
Tags Concentrate Management, Energy Storage, Renewable Energy
Reclamation Project
Reclamation Program Science and Technology Program

Location Information

Location Name Worldwide
Location Description
Location Tags World, Western US, North America, South America, Europe, Asia, Australia
Location Parent
State(s) Alaska, Alabama, Arkansas, Arizona, California, Colorado, Connecticut, District Of Columbia, Delaware, Florida, Georgia, Hawaii, Iowa, Idaho, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, Montana, North Carolina, North Dakota, Nebraska, New Hampshire, New Jersey, New Mexico, Nevada, New York, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, Vermont, Washington, Wisconsin, West Virginia, Wyoming
Unified Region(s) North Atlantic-Appalachian, South Atlantic-Gulf, Great Lakes, Mississippi Basin, Missouri Basin, Arkansas-Rio Grande-Texas-Gulf, Upper Colorado Basin, Lower Colorado Basin, Columbia-Pacific Northwest, California-Great Basin, Alaska, Pacific Islands
Elevation [ N/A ]
Vertical Datum [ N/A ]
Coordinates (lat, long) See Location Details
Horizontal Datum WGS84