Integrated Data Centre-Desalination Modules for Circular AI Infrastructure in Water-Stressed Regions

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The rapid expansion of artificial intelligence (AI), cloud computing and high-density computing infrastructure is transforming the way hyperscale developments plan and manage water. While recent advances in Direct-to-Chip (DTC) liquid cooling and other high-efficiency cooling technologies have significantly reduced operational water demand, developers increasingly face broader challenges associated with long-term water resilience, source-water security, regulatory approval and lifecycle management of residual streams. To address these emerging requirements, Pact Renewables is offering hyperscalers three complementary Data Centre–Desalination (DC-Desal) Modules that integrate sustainable water sourcing, desalination, cooling-water supply, Zero Liquid Discharge (ZLD), Zero Waste Discharge (ZWD), brine management and optional mineral recovery within flexible infrastructure frameworks designed for long-term AI campus development.

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Coastal DC–Seawater Desalination Module

 

This module integrates seawater desalination with hyperscale                                                                cooling-water supply. Optional Salpro processing enables                                                                  recovery of magnesium hydroxide and other mineral products                                                                    from desalination brine while improving long-term water security.

 

Key advantages include:

• Long-term cooling-water security at hyperscale

• Reduced reliance on municipal recycled water supplies

• Improved infrastructure resilience and investment certainty

• Optional mineral recovery from desalination brine

• Integration with ZLD, ZWD and other circular economy initiatives

• Potential co-location with renewable energy and industrial                                                              precincts

 

Inland DC – Brackish Water Desalination Module

 

This module utilises brackish groundwater, recycled water or

other non-potable sources to supply low-salinity cooling water.

Optional mineral recovery and residuals management

pathways support enhanced operational resilience and

ZLD objectives.

 

Key advantages include:

• Enables use of lower-quality non-potable water resources

• Produces high-quality cooling water for AI infrastructure

• Reduces scaling, corrosion and operational risks

• Provides pathways for mineral recovery and value creation

• Integration with ZLD, ZWD and other circular economy initiatives

• Complements existing engineering and operational water strategies                                                               ​

Dual - Mode Hybrid DC- Desalination Module

 

The framework integrates complementary brackish-water and seawater-grade desalination pathways within a single adaptive infrastructure architecture. Depending on local conditions, the system can utilise recycled water, brackish groundwater, seawater or seawater-type saline groundwater either independently or simultaneously to provide reliable cooling-water supplies for advanced Direct-to-Chip (DTC) liquid cooling, hybrid cooling and other high-density thermal-management systems.

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Unlike conventional single-source approaches,

the dual - mode framework enables developers

to respond to changing source-water chemistry,

staged campus expansion, evolving regulatory

requirements and future climate variability

without fundamentally redesigning water infrastructure.

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The framework also incorporates optional Zero

Liquid Discharge (ZLD) and/or Zero Waste Discharge

(ZWD), via mineral recovery and residuals management pathways, providing a lifecycle approach to sustainable water management for hyperscale AI infrastructure.

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Key advantages include:

• Integrates brackish water, recycled water, seawater and saline groundwater within a single adaptive platform.

• Accommodates variable source-water quality and future changes in water availability.

• Produces multiple water qualities suitable for DTC liquid cooling, facility cooling loops and associated thermal-management systems.

• Supports staged campus expansion without dependence on a single water source.

• Reduces long-term water supply and regulatory risk in water-stressed regions.

• Provides integrated pathways for ZLD, Near-ZLD, ZWD and Near-ZWD implementation.

• Supports optional mineral recovery and circular-economy outcomes.

• Improves environmental resilience, investment confidence and long-term project sustainability.