UT Austin Models Oilfield-Wastewater Desalination for Data Center Cooling

The University of Texas at Austin has examined desalination pathways for oilfield wastewater from the Permian Basin for potential use in data center cooling. The work is a modelling exercise, not a deployed water-supply or cooling project.

The central technical constraint is salinity. The research identifies reverse osmosis as the most energy-efficient desalination route, but notes that its applicability is limited where wastewater salinity exceeds that of seawater. In those cases, thermal distillation may be required, increasing the energy burden of producing water suitable for cooling applications.

The issue is material for large-scale facilities. Figures cited in the underlying article indicate that large data centers can directly consume up to 5 million gallons of water per day. At the same time, lead researcher Vaibhav Bahadur said the Permian Basin generates wastewater equivalent to 1,200 Olympic-sized pools each day, with most of that volume injected underground.

Reusing treated produced water could create a local non-potable water option for data center cooling in oil-and-gas-producing regions, while potentially reducing dependence on freshwater and underground disposal. However, project economics would be shaped by the energy intensity of treatment, the salinity of the source water and the handling requirements for desalination concentrate.

The article also cites a projection that underground disposal capacity for this wastewater could be exhausted as early as 2030. That outlook is presented as a forecast attributed to the study lead, rather than as an established outcome.