Reduced Screenings Disposal Costs for Acacia Bay STP

March 19, 2024

The Acacia Bay STP owned by Taupo District Council treats up to 365 kL/d of sewage via a sequential batch reactor (SBR) process. Hydroflux were contracted to install a new screenings wash press system in order reduce the amount of screenings taken offsite for transport.

A HUBER WAP Wash Press was selected for the process and accepts screenings from current screening system onsite. The HUBER WAP is a horizontal screw wash press with discharge pressure pipe that is design to remove faecal material from captured screening and compact the screenings.

Technology Highlights

  • Washes and compacts screenings from step, drum, band and bar screens
  • Reduces screening volumes by 65% – lower transport and disposal costs
  • Washing component results in dry screenings free of odour and vermin
  • Organic rich washwater is return to the liquid stream and is a source of carbon
  • Simple to operate and maintained


  • Five sizes are available, from 0.3 through to 10 m3/h of wet screenings
  • Can be configured for launder feeds (ie band and drum screens)
  • Custom fabricated feed and discharge tie in points to suit retrofits
  • All stainless steel fabrication
  • Well proven in New Zealand

To learn more about HUBER WAP Press, please CLICK HERE or call us on 1300 417 697.

About the Hydroflux Group

The Hydroflux Group aims to deliver the highest level of engineering and scientific know-how to the emerging issues of sustainability, climate adaptation and environmental protection with a specific focus on water and wastewater.

As part of its vision and mission, Hydroflux has always taken its climate responsibility seriously. In 2022, Hydroflux became Australia’s first water treatment and technology company to achieve Climate Active carbon neutral certification for its organisation and products. It knows that partnering with customers and clients is the most significant impact it can have in its journey. The Group employs over 100 staff and operates throughout Australia, New Zealand and the Pacific Islands, with office locations in Sydney, Melbourne, Brisbane, Perth, Auckland, Suva and Portsmouth.

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