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Water filtration sludge conveying and outloading

This modern and sophisticated water purification plant includes SPIRAC long run U420 spiral conveyors to transport dewatered sludge from belt filter presses to the truck outloading bay.  

The longest single drive conveyor in this installation is 34m, operating at high capacity but low RPM through variable speed drives.  Installed in 2005, this plant has not required a liner change as of 2012. 

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      Products

      SPIROLINE® Horizontal/Inclined Shaftless Spiral Conveyors

      Intended for the transport of difficult, materials – suitable for a wide range of moisture contents and viscosities

      SPIROLIFT® Vertical Shaftless Spiral Conveying Technology

      Significant cost and operational advantage over alternate methods of sludge elevation and transport.

      OUR UPDATES

      Latest News & Articles

      New Screen Installation Restores Reliable Screening Performance
      SPIRAC Australia recently completed the replacement of an aging step screen, providing the customer with a modern and reliable STEPGUARDTM screening solution designed to support long-term wastewater treatment operations.
      READ MORE
      SPIRAC Service Teams Deliver Conveyor Upgrades and Asset Life Extensions
      When solids handling equipment begins to show signs of wear, operators are often faced with a difficult decision: repair, replace, or continue operating at increased risk of unplanned downtime.
      READ MORE
      SPIRAC at Water New Zealand Conference & Expo 2026
      SPIRAC will be exhibiting at the Water New Zealand Conference & Expo 2026, taking place from 22-24 September 2026 at Claudelands, Hamilton, New Zealand.
      READ MORE
      SPIRAC is pleased to announce that it will be exhibiting at WEFTEC 2026 at Booth #6753
      SPIRAC is pleased to announce that we will be exhibiting at WEFTEC 2026, the world's largest annual water quality exhibition and conference, taking place in New Orleans, Louisiana, USA. Visit us at Booth #6753 to discover the latest innovations in solids handling, dewatering, screening, grit handling, and shaftless spiral conveying solutions.
      READ MORE
      Shaftless Spiral Slewing Conveyor Maximises Sludge Outloading Flexibility
      SPIRAC has manufactured a 12-metre shaftless spiral slewing conveyor designed to provide a flexible solution for sludge outloading. The design incorporates a single pivot point at the inlet, allowing the entire conveyor to slew across a wide operating arc and discharge sludge over a large area.
      READ MORE
      Designing for Extreme Rainfall Inflow Surges
      Building Resilient Wastewater and Stormwater Infrastructure
      READ MORE
      Our testimonials

      What They Are Saying

      SPIRACs engineers had an uncompromising commitment to develop and manufacture a leading inlet works solution within time and budget, allowing us to develop a sustainable plant for the future
      Mr. Davie
      Mr. DavieGoondiwindi, Aufsichtsrat /Entwicklungsberater
      Great system. We have it onsite at Rubyanna WWTP, recommend them for any plants for the future or even retrofitting! Flawless and easy! Also recommend SPIROTAINER. Less than 5 minutes from entering site with one and leaving with a full one! Great idea guys.
      Sean Watteau
      Sean WatteauDowner,
      Kläranlagen Treatment Plant Manager
      SPIRACs engineers had an uncompromising commitment to develop and manufacture a leading inlet works solution within time and budget, allowing us to develop a sustainable plant for the future
      Jacob Colins
      Jacob ColinsLystek Fairfield - Anlagenbetreiber /Produktkoordinator
      SPIRACs engineers had an uncompromising commitment to develop and manufacture a leading inlet works solution within time and budget, allowing us to develop a sustainable plant for the future
      Jacob Colins
      Jacob ColinsLystek Fairfield - Anlagenbetreiber /Produktkoordinator
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      Why Should You Buy From SPIRAC?

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      only
      20%
      of wastewater is collected worldwide, and we aim to improve this
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      we serve clients in
      60+
      countries worldwide