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Zigzag Air Classifier (ZAC)

The Zigzag Air Classifier waste sorting system is the very latest version of the hugely popular zigzag separation technology, found in operation in many waste recycling facilities around the world.

Solution Overview

Impact recognises the industry requirements of ensuring a high-quality waste stream, so has further engineered a successful separation solution which greatly improves the separation of valuable recyclable materials while providing the operator with a low maintenance and hassle-free system.

Combining our highly skilled in-house engineering team, 3D modelling software and working in conjunction with our carefully selected external supplier base, the ZAC800 boasts impressive resistance to abrasive materials, less moving parts and the very latest fitration technology, whilst maintaining its exceptional separation efficiency.

Utilising density separation by the power of air, the ZAC800 is specially engineered for processing of glass rich or highly abrasive sub 100mm material streams, constructed from carefully selected materials ensuring exceptional durability. The Zigzag cascade enclosure includes hardened chromium cast plates to greatly reduce wear from glass.

Advanced Separation Technology

Zigzag material separation technology is used to separate light weight material particles from heavier particles by cascading the mixed in-feed material through an upwards travelling air stream inside a zigzag shaped enclosure.

An upwards travelling airstream collects the lightweight material particles, allowing separation or grading of feedstock. Heavier material particles are not affected by the airstream and discharge at the bottom of the zigzag enclosure.


The zigzag air classification technology is ideally suited to low moisture, free flowing, consistently sized material particles up to approximately 60mm in size, where there is a noticeable difference in the product density or weight (i.e. separation of lightweight paper, film, dust and plastic from heavier stone, glass or metal).


See below for Case Studies.

ZAC800 Material Recovery Brochure – Download




Try Before You Buy…

Order Your Free Testing Kit Now!

Run your own mixed waste through our test facility to see real results. Send your sample and we’ll carry out a live demonstration in person or online.

Valuable Material Recovery


• High quality material streams
• Fast return on investment (from as little as 5 months)
• Revenue from recyclable material
• Reduced landfill tax
• Low maintenance
• Hard wearing parts suitable for glass and other abrasive materials

Visit our Material Recovery Test Facility, centrally located in Leicester, with a sample of your material, and see the separation process for yourself.

This is proving to be a popular option to try before you buy. Click here to find out more.

“The ZAC800 is proving to be the ultimate separation solution with an extremely impressive ROI. The system has recently provided P&D Material Recovery with a 5 month ROI and they are over the moon with the outcome!”

Dave Lansdell
Impact’s Technical Sales Director

Case Study

Multiple Impact Glass Cleaning Systems for Recresco

The success they experienced with their original ZAC800 and the fact that it paid for itself within months, meant that adding three more to their glass recycling operations would further enhance the process and assist them in achieving high quality material streams at extremely high volumes.

Skip Waste Fines Clean-up

The value in the cleaned glass and stone stream and Solid Recovered Fuel (SRF) stream will pay for the machine within the first 6 months of operation.

Glass & RDF Recovery at MRF Residue Plant

P&D Materials Recovery (PDMR) Ltd began the operation of a purpose-built bespoke recycling plant during August 2017 following 24 months of research & development and design.

New and Improved Glass Recovery

The new and enhanced Zigzag Air Classifier 800 (ZAC800) was the system of choice for resource recovery giants, Republic Services at its Anaheim site in California, USA.

Waste management Glass and SRF recovery solutions | Impact Air Systems