Kent Enviropower Limited

Allington Materials Recycling Facility Update April 2011

James Stapeley

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

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

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

MRF Trials 2009

0

5

10

15

20

25

30

1 2 3 4 5 6 7

Trial Number

Belt

spee

d/Pi

cker

s/Re

ject

%

Belt Speed Tonnes per hour No. of pickers Reject materials to bunker % Reject materials baled %

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

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

MRF Residue Belt- Direct to Bunker

News and Pams61%

Shredded Paper7%

Cans4%

General rubbish/non target10%

Plastic Bottles7%

Cardboard7%

Other Plastics4%

News and Pams Shredded Paper

Cans General rubbish/non target

Plastic Bottles Cardboard

Other Plastics

Residue