Water management

Produced-Water Desalination Approach Uses Renewable Thermal Energy

This paper describes a method to manage high-salinity produced water in an environmentally sustainable way by extracting potable water and reducing discharge water volume by at least 50%.

Simulated monthly thermal energy output for the proposed pilot plant (MWh) over the last 5 years.
Fig. 1—Simulated monthly thermal energy output for the proposed pilot plant (MWh) over the last 5 years.
Source: SPE 211175.

The operator is adopting a method to manage high-salinity produced water in an environmentally sustainable way by extracting potable water from produced water and reducing discharge water volume by at least 50%. For desalination of the produced water, a combination of forward and direct osmosis technology is used. This process is driven mostly by thermal energy, which is provided to thermal collectors that are 100% solar. This technology uses renewable energy and will have no carbon footprint.

Technology Description

The technology involves concentrated solar thermal (CST) power plants that provide 100% renewable water desalination. Forward osmosis (FO) and direct osmosis (DO) can desalinate highly saline and polluted water, such as produced water, mainly with solar thermal energy.

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