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72 Evaluation of Opportunities for Converting Indigenous UK Wastes to Wastes and Energy AEA/ED45551/Issue 1 Table 35 Estimate of furniture waste in MSW in the UK for 2003/4 Wood Arisings (‘000 tonnes) Waste Stream England Northern Ireland Scotland Wales UK Household Collection 34 1.1 3.6 0.7 39 (6%) Bulky Collections 230 6.9 43 11.5 291 (49%) Civic Amenity 236 11.1 17.7 6.1 271 (45%) Non Household Collection 0 0 0 0 0 Total Wood in MSW 500 19 64 18 602 Applying the waste wood arisings for 2003/4 to the waste arisings for that year (England, 29,114 thousand tonnes) yields an arising figure of 3.13% for general waste wood and 1.72 for waste furniture wood. 115 These percentages have been applied to the most recent MSW arisings to give an alternative arisings figure, and yield the estimates in Table 36. Table 36 Estimation of Waste Wood arisings by region using 2007/-8 MSW figures Region Wood Waste (excl. furniture) (‘000 tonnes) Furniture Waste (‘000 tonnes) East Midlands 76 42 East of England 95 52 London 130 71 North East 47 49 North West 127 70 South East 143 79 South West 92 50 West Midlands 93 51 Yorkshire and Humber 90 49 England - Total 892 513 Northern Ireland 34 19 Scotland 94 52 Wales 56 31 UK - Total 1,076 584 5.1.2 Construction and Demolition Waste Wood (C&D) Data for C&D waste is largely concerned with achieving aggregate recycling, and therefore includes only mineral waste. The Environment Agency estimate that 4 million tonnes of waste wood arise from the construction industry every year. 116 Construction and demolition waste is usually classed as one category, but waste wood may arise from a number of different waste streams: 117 • Construction o off-cuts from structural timbers, o timber packaging, scaffolding, cladding, etc. Wood is likely to be untreated or uncontaminated. 115 Defra e-Digest Statistics for 2007/8, http://www.defra.gov.uk/environment/statistics/wastats/archive/mwb200708.xls 116 Defra “Waste Wood for Biomass” quoting the study by Nikita et al (2005). They note that this figure is an average of the maximum and minimum estimates which are 7.9 million tpa and 2.2 million tpa respectively for the UK. 117 Remade Scotland (2004) Woodwaste Arisings in Scotland Assessment of Available Data on Scottish
Evaluation of Opportunities for Converting Indigenous UK Wastes to Wastes and Energy AEA/ED45551/Issue 1 • Demolition o Used structural timber, floorboards, joists, doors and frames etc. Wood is likely to be treated, painted, coated or varnished, all are ‘contaminated’. • Refurbishment - this would be a combination of the above • Destruction • Scaffolding Remade Scotland indicates that the specific types of waste wood from construction and demolition waste include: • cable drums • coated material • cladding • dimension timber • doors and door frames • fences • flooring • framing timbers • pallets and fencing • panels and engineered wood composites using adhesives • piles • poles • solid wood • stakes • window frames Traditionally much of this waste was disposed of in skips on site and was poorly segregated. However, there have been advances in segregation and recycling of construction and demolition waste through the introduction of the Site Waste Management Plans (SWMP) in April 2008 for sites greater than £300,000. 118 Small sites (under £300,000) still continue to skip the majority of their waste, most of which goes to landfill. Segregation is often more difficult on such sites due to the lack of time and resource to undertake this activity. Current Arisings There are only a few data sets available for arisings of waste wood from C&D, and these have been evaluated by Nikitas et al (2005). (See Appendix 1 for an evaluation of these sources.) Taking 1.5% as the minimum value of C&D waste arisings that are waste wood, and assuming a maximum value of 12.44% as the upper limit (although this includes excavation waste, hence the reduction to 7.22% as 42% of the C&D waste was established as excavation waste) produces the figures detailed in Table 37. Table 37 Estimated waste wood arisings (excluding reclaimed wood) from the C&D waste stream. UK Arisings of waste wood (‘000 tonnes) England Wales Scotland Northern Ireland Total C&D waste arisings 88,900 5,000 6,300 900 101,100 Minimum Estimate (1.5%) 1,330 80 90 140 1,640 Maximum Estimate (7.22%) 6,410 360 450 70 7,290 Average 3,870 220 270 40 4,400 The above figures take no account of reclaimed wood, which is a further 634,000 tonnes for the UK, yielding a total of 5,034,000 tonnes. However it is unlikely that reclaimed wood would be available for energy generation. There is a very significant difference between the minimum and maximum estimates, demonstrating the degree of uncertainty in the data, and the need for more detailed arisings figures to be generated. 118 Defra 2008. Non-statutory guidance for site waste management plans. UK 73
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South East 327 - - 55% of MSW by 20
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Appendix 3 MBT Methods Specific in
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Figure 27 Orchid Environmental proc
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