Industrial wastewater treatment and water reuse

Requirement overview

Regional water stress has put serious limits on the complex’s freshwater withdrawal. This call seeks a system that treats process effluent to a quality that can be returned to the cooling loop, reducing the complex’s dependence on local water sources.

Background and rationale

The existing treatment plant was designed only to bring effluent to discharge limits and cannot support reuse. The client aims to recycle at least 60% of the outgoing effluent within a three-year horizon.

Project objectives

• Recycle at least 60% of the outgoing effluent
• Bring the recovered water to cooling-tower make-up quality
• Achieve a measurable cut in freshwater withdrawal
• Sustainable management of sludge and concentrated brine

Scope of work

• Effluent characterisation and a treatability pilot study
• Basic and detailed design of the advanced treatment unit
• Construction, installation and commissioning of the system
• Trial operation and guaranteed quality handover

Expected deliverables

• Effluent characterisation report and pilot results
• Complete engineering package for the treatment unit
• Operational treatment unit at the agreed nominal capacity
• Recovered-water quality monitoring report for the first six months

Applicant requirements

• Experience delivering advanced treatment units in the chemical industry
• Able to run an on-site pilot study
• Willing to guarantee effluent quality
• Compliance with Department of Environment regulations

Evaluation criteria

• Sludge and brine management approach15%
• Track record and industrial references25%
• Quality and consistency of the recovered water35%
• Capital and operating cost25%

Call timeline

1. 1

   Evaluation result

   Aug 21, 2025

   Results are announced and contract negotiation begins.

2. 2

   Site visit and sampling

   Jul 16, 2025

   Applicants are given the opportunity to sample the effluent.

3. 3

   Call published

   Jun 29, 2025

   The requirement document and the current effluent analysis were published.

4. 4

   Proposal deadline

   Aug 6, 2025

   Final deadline for uploading the technical and financial proposal.