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Saline Waste Reduction Solutions

Water quality management in pumped hydro energy storage (PHES) systems

Saline waste generating industries we serve 

We support the following industries who seek sustainable saline water solutions via volume reduction, product recovery, brine pre-treatment for regulated discharge, or any combination thereof for footprint reduction, including:  

  • Mining and mineral processing operations generating saline effluents with complex chemistries 

  • Desalination, including various seawater and inland desalination processes co-producing reject brine

  • Oil/gas exploration and production from conventional and unconventional sources generating saline produced water and fracking effluents

  • Energy generation by coal combustion, waste-to-energy, and geothermal energy production methods generating fly ash and air pollution control residue (APCr) often characterised by elevated soluble salt and hazardous metals requiring removal and safe land disposal

  • Hazardous waste treatment companies, providing PFAS treatment solutions but faced with the challenge of safe disposal of saline waste containing PFAS residue in an evolving regulatory environment 

  • Municipal/industrial sewage waste incineration operations generating fly ash containing elevated concentrations of soluble salts and heavy metals

  • Petrochemical/metallurgical processes generating various types of brine effluent

  • Mineral extraction from saline sources, such as lithium and potassium sulphate, which generates spent brine that requires reinjection, diluting and contaminating the feedstock

  • Cement manufacturing operations producing cement kiln dust, often requiring removal of soluble salts and hazardous metals prior to land disposal


We offer decarbonisation solutions to the following industries:

  • All types of forestry, including broadacre, urban and native lands

  • Agroforestry for carbon credit generation

  • Carbon dioxide removal using thermal residues of cement, coal power, lime and waste-to-energy production for carbon credit generation/offsetting 

  • Soil carbon enhancement for carbon trading platforms 

  • Food chain GHG reduction, including livestock and landfills 

  • Urban greening, including smart building products 


Our advisory services

We deliver our advisory services via any of the following arrangements:  


Consulting: Expert advice on saline water cycle management from design, planning to monitoring, regulatory reporting, and treatment in multiple areas of expertise, including:

  • Recovery of water and mineral products for waste minimisation

  • Assessment of options for treatment of effluents generated by washing of APCr and flyash residues, for either safe disposal or reuse of washed solid residues

  • Reduction of the salt load of saline impoundments, through mineral recovery for extending the operating life of the impoundments

  • Sample analysis and petrographic description of sediment/evaporite drill cuttings from salt dome exploration programs, and development of waste brine management strategies for solution mining projects related to hydrogen storage in salt dome basins

  • Independent expert review of technical reports related to saline waste treatment on behalf of mining and engineering/consulting companies, municipalities, utilities, and regulatory agencies


Desktop Studies: Including prefeasibility and feasibility studies. As an expert consultant and supplier of the technologies driving our sustainable saline waste disposal solutions, we are uniquely placed to undertake integrated lifecycle assessments (LCA) and techno-economic assessments (TEA) on behalf of our clients.

Testing and test rig scale evaluations: for preparing design packages for piloting projects.

Contract R&D: undertaken on behalf of our clients seeking proprietary solutions that are optimised for compatibility with local, state, and national regulatory guidelines, whilst minimising the environmental liabilities of our clients. Generation of site-specific IP, related to and owned by the client, and post-licencing support.


By harnessing the power of our sustainable saline waste treatment technologies, and using our deep knowledge of industry needs, Pact Renewables is uniquely placed to assist its clients with reducing their footprint through recovery of value-added products from their saline waste streams and potentially earning carbon offsets.

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