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The voice of the skip hire, recycling and waste industries in the UK & Ireland.

Classification of material results in valuable recyclable products – LOI Tests are no joke!

Waste management companies will be hardest hit by the LOI (Loss on ignition) tests with landfill tax charges being increased dramatically from £2.50 per tonne to £80 per tonne. This could mean an operator’s yearly landfill tax bill leaping from £25,000 to £800,000 for 40 tonnes of waste fines a day, as previously reported.

Waste must be further separated and cleaned to further remove the calorific material that can be recycled, which will therefore result in the lower tax rate and hugely reduce landfill tax bills for the operator.

Impact’s Zigzag Classification Unit (ZCU) has been successfully providing an efficient density separation solution for waste management companies with the ability to handle a wide range of materials and with specific adjustments to ensure maximum efficiency, the Zigzag is the obvious choice to minimise tax exposure.

Sam Corp, Head of Regulation at Environmental Services Association (ESA) said “An objective LOI test will go a long way to prevent the misclassification of waste, which has been so costly to responsible operators and to the UK’s economy.

“We hope that the Chancellor’s announcement of the Loss on Ignition test will give operators the assurance they need to put in place the necessary measures to implement the regime from 1 April.”

In order to improve the consistency of the SRF being supplied to their in-house waste to energy plant, and to significantly reduce the labour involved in the separation of heavy contaminants, Robert Hopkins Environmental were introduced to Impact’s full scale operational ZCU, Zigzag Classification Unit, at this year’s RWM (Recycling & Waste Management exhibition).

As one of the longest serving authorised waste management service providers in the UK for collection and disposal of hazardous and non-hazardous waste, Robert Hopkins Environmental have a constant supply of oil impregnated rags from the petrochemical, engineering and automotive industry, which when pre-screened, shredded and finally processed by Impact’s ZCU unit provides a very high calorific RDF.

In-line with standard procedures, especially for a non-typical waste stream, extensive analysis was carried out to establish the waste separation efficiency of our ZCU (Zigzag Classification Unit) Impact’s model ZCU1000 was selected to handle the throughput of nominally 4 tph. The 1 tonne sample material was even contaminated, un-known to Impact at the time, with 30 penny washers of various size which where all recovered within the heavies fraction to the delight of Peter Hopkins, Managing Director of Robert Hopkins Environmental.

The combustible fraction, consisting of oil impregnated shredded rags are entrained in the upwards air stream within the Zigzag tower and transferred to the Rotary Separator before being discharged onto a belt conveyor feeding bulk collection bins. The heavy fraction, consisting mainly of hardcore, metal and glass, not entrained in the upwards air stream, are discharge from the bottom of the Zigzag tower onto a heavies conveyor for further processing via an ECS unit. The fine dust contained within the air stream is captured by the integral reverse air jet filter unit and incorporated back into the clean RDF stream.

Since the system was commissioned at Robert Hopkins Environmental it has benefited from an improved RDF output stream, Neil Fryer, Operations Manager commented “We are extremely satisfied with the results from Impact’s Zigzag Classification Unit. Having previously tried other technologies the Impact ZCU system exceeded our expectations, we can now supply our WTE plant with a consistent product”.

For more information, images, or to arrange an interview, please contact Impact’s Marketing Manager:  Hayley Malyon at [email protected] or call 0116 2448855

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