Screening washing, volume and weight reduction

SPIROWASH® Compact & High-Flow Screenings Washing Systems

When fine screens are installed in municipal Wastewater Treatment Plants, they generate large volumes of faecal and organic matter from screening activities. Typically, a washer dewaterer washes out the organic material, reduces the volume and weight of the screenings and compacts them.

What Is the SPIROWASH® Screenings Washing System?

SPIROWASH® represents a range of machines available to handle raw screenings flows of up to 8 m³/hr (280 ft³/hr) in the standard range but could be up to 12m³/hr (420 ft³/hr) for the larger models. The wash compactor machine continuously washes out organic material whilst mechanically compacting and dewatering the remaining inorganic portion.

SPIROWASH®COMPACT/HIGH FLOW is a robust and simple machine, non-sensitive to varying qualities of screenings and contents of grit.

SPIROWASH® is designed so that maintenance to all moving parts can be completed from the outside of the machine – no bearings, wheels and lubrication points are inside.

The machine can be located either directly underneath the screen or fed by a conveyor. If a launder feed is necessary the HIGH FLOW model is on hand to deal with great volumes of free water.

SPIROWASH® is ideally suited to applications – also retrofits – where its capacity, robustness, compact size and cleaning/compacting qualities make an obvious step up to meet tomorrow’s rigorous requirements.

PRODUCT BENEFITS
  • Low power usage
  • Low washwater usage
  • Highly reliable in operation
  • Low capital cost, low power consumption, few moving parts – therefore low maintenance and operating cost.
  • Simple automatic control for great flexibility
  • Tolerant to high grit and fat loadings, therefore very reliable under difficult conditions.
  • Typically up to 90% organic removal.
  • Dewatered final product; typically, 35% to 45% D.S. content.
  • Volume reduction; typically, 45% to 85%.
  • Complete aftermarket support available.

 

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      OUR FAQS

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      Why Should You Buy From SPIRAC?

      SPIRAC is a trusted global leader in engineered wastewater solutions for materials handling, delivering reliable, purpose-built systems backed by decades of expertise. Customers choose SPIRAC for its ability to design and manufacture high-quality shaftless spiral conveyors, screenings handling systems, and bulk solids handling equipment that perform in the toughest industrial and wastewater environments. With a strong focus on innovation, durability, and low maintenance, SPIRAC solutions are engineered to reduce downtime, improve operational efficiency, and minimise lifecycle costs. Supported by a global footprint and dedicated local service, SPIRAC partners closely with clients to provide customised, end-to-end solutions that consistently deliver long-term value and performance.

      When you choose SPIRAC, you can expect a reliable partner committed to delivering high-performance, engineered solutions tailored to your specific needs. From the initial consultation through design, manufacturing, and installation, SPIRAC works closely with clients to ensure every system is fit-for-purpose and built to last. You can expect robust equipment designed for harsh operating conditions, minimal maintenance requirements, and long service life. SPIRAC also provides strong technical support, responsive service, and ongoing collaboration to optimise system performance, reduce operational costs, and ensure your materials handling processes run smoothly and efficiently.

      SPIRAC can confidently demonstrate a proven track record built on decades of global project delivery and industry expertise.

      With installations in municipal and industrial facilities across Australia, Europe, the Middle East, the UK, and North America, SPIRAC has successfully delivered thousands of materials handling systems operating in demanding environments such as wastewater treatment plants, pulp and paper mills, food processing facilities, and heavy industry. Its shaftless screw conveyor technology is widely recognised as a benchmark in the industry, with many long-term installations still operating efficiently after years of continuous service. In addition, SPIRAC supports its reputation with documented case studies, repeat clients, and ongoing partnerships with leading engineering firms and utilities—demonstrating consistent performance, reliability, and customer satisfaction across a wide range of applications.

      At SPIRAC, we understand that accurate cost visibility is critical to successful project planning. That’s why our team is ready to provide detailed, transparent quotations tailored to your specific requirements. Whether you’re upgrading existing infrastructure or planning a new installation, we work closely with you to scope your needs and deliver a clear, competitive proposal. With our engineering expertise and practical industry knowledge, you can move forward with confidence—knowing your solution is both technically sound and commercially aligned. Reach out today and let us help you plan with certainty.

      only
      56%
      of domestic wastewater is safely treated worldwide, and we aim to help improve this.
      we serve clients in
      60+
      countries worldwide