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Kent Enviropower Limited Allington Materials Recycling Facility Update April 2011 James Stapeley
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Overview of the MRF Operation Designed for paper, plastic bottles, cans and card Manual sort for product streams and quality Job creation as part of the overall planning for the facility Currently employs 31 staff Process involves Bag splitter Trommel Picking cabin Ferrous and non- ferrous separation Product baler News & PAMS Mixed Paper Metals Residue DISTRICT KERBSIDE COLLECTIONS Mixed Plastic
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Operating the MRF To manage the plant at optimum efficiency: Process as much material as possible Provide the best quality material to end processors Reduce residue levels Maintain UK based material audit trail Minimise risk to staff Minimise downtime and stoppages Variables: Belt Speed Number of Pickers Picking Methodology
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To improve efficiency operational trials have sought to understand the benefits of: Number of pickers, increasing pickers from 12 to 28 Speed of belts, evaluating increase in production over quality of material Type of material picked, i.e bagged/loose Method of sorting, i.e positive/negative pick Different borough qualities Best methodology process proved to be increase of pickers, a set belt speed, and negative pick of mixed paper By adapting a set methodology as a result, rejection rate settled and Allington material was not rejected by end reprocessors. The Allington Materials Recycling Facility
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MRF Residue Two Streams 1.PICKED RESIDUE - Waste picked off the belt to get at the value material – mainly consists of plastic bags and is baled. This is then sent to the MSW and energy recovered from it. Approx 10% 2.NON PICKED RESIDUE - All non picked (negative) material from the first belt- Direct to EfW bunker for recovery. Approx 10-13% Picked Residue There is a market for clean, 100% plastic bags/film overseas. Allington MRF cannot produce such a clean grade. To reduce residue this material was originally sent to other MRF’s. After optimisation of Allington MRF material no longer accepted as no value attached. ALL key waste management companies/end reprocessors/brokers have viewed material. All offer an EfW solution as the only viable solution for material. Recent developments in industry point towards this material being potentially used to produce synthetic oils
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Non Picked Residue Initial studies carried out in March 2011 suggest this stream contains more target material. Although the material is small and cannot be separated further at Allington MRF, graph shows initial analysis of stream. Possible short term solution is to redirect residue belt into another area for transportation to another MRF. Next steps are to discuss with other waste management companies and MRF’s willingness to accept this material moving forward, as well as gain more compositional analysis Residue
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