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Welcome to Liquitek

Liquitek has extensive experience in the Australian water industry having designed and manufactured many water & wastewater treatment systems since 1994. Liquitek’s head office is in Seven Hills, Sydney with satellite offices in Melbourne, Brisbane and Adelaide.


Our capabilities include:

  • Project management
  • Design (process, mechanical & electrical)
  • Fabrication
  • Technology provider (supplying Equipment and Systems)
  • Plant construction
  • Site installation and/or site supervision
  • Commissioning and testing

Liquitek has delivered projects as alliance partner, main contractor, sub-contractor and technology provider. We can tailor our scope to suit any project/owner requirement; from as simple as equipment supplier to complete turnkey project delivery.


Liquitek is part of the Century Group. Century is an Adelaide-based privately owned company that offers diversified solutions to Australia’s infrastructure projects and manufacturing. Century’s key markets include power, defence, mining, water, rail, and outsourced manufacturing for OEMs. Century’s capabilities include:

  • Water industry solutions
  • General engineering
  • Metal manufacturing & machining.


Century has a mature QA/QC system and is accredited to ISO 9001:2008 (quality), ISO 14001:2004 (environment), ISO 4801:2001 (safety) and ISO 3834.2:2008 (welding). Liquitek operates within the framework of Century’s quality systems.


Our core business activities:

  • Biological wastewater treatment process systems and equipment including:
    • Sequential Batch Reactor (SBR), Membrane Bioreactor (MBR) and Rotating Biological Contactor (RBC) technology
    • Aeration (diffused, mechanical: surface, brush, jet)
    • Mixing (mechanical, compressed gas)
    • Decanting for intermittent processes
    • Cloth Media Filtration for a variety of applications
    • Process Control Systems for all treatment systems
  • UV disinfection, closed reactors & channel systems (for drinking water, process water, wastewater & stormwater)
  • Chemical make-up, storage and feed systems (powders & liquids)
  • Vacuum chemical feeding systems (liquids & gases)
  • Sludge Solar Drying for dewatered wastewater sludge
  • Sedimentation equipment including mechanisms and drives for clarifiers & thickeners
  • Complete technical support and spare parts service