removed from the influent and transferred into the solid waste stream (sewage sludge; 27 000 t P2O5; CBS, 2008). Taking the contribution from sewage sludge into account, it is calculated that some 30 300 t P2O5 is present in the remaining solid waste as well as in other commodities. The data presented in Table 5.1 and Annex I are based on administrative data from different sources in combination with various assumptions made by Statistics Netherlands (CBS). Information about the uncertainty in these calculations, or the assumptions made, is however not provided. Apart from the agricultural phosphate cycle, which is well described, the data otherwise have a limited level of detail. It is for example unclear how much of the phosphate present in raw agricultural products is finally consumed as food by the Dutch population, and how much is lost as organic waste during processing. Item Inorganic phosphate including detergents, food additives, etc. ton P2O5 34400 Remark Calculated as the difference between the net inorganic phosphate consumption (100 800 t PO5) minus agricultural consumption of fertilisers (48 100 t PO5), feed additives and others (18 300 t PO5). It is estimated that 30 to 50% of the raw food produced in the Netherlands is lost during production, transportation and storage (LNV, 2009). The amount of phosphate in the waste is calculated using net amount of phosphate in food (64000 t PO5). The lower and upper values are calculated as the remainder from the net amount of food (64000 t PO5) and a 30 to 50% loss during primary production, transportation and storage. Source: CBS, 2008. The average dietary intake amounts to 1.1 PO5 kg/year (Reiman and Caritat, 1998). With a total population of 16.2 million inhabitants and a 10% loss during food preparation and storage (LNV, 2008), the dietary intake would amount to 19 600 t PO5. The remaining 10700 t PO5 must be derived from other sources such as detergents, primary processing of food (washing) and other sources. 35 Table 5.2 : Estimates of the amount of phosphate present in various items in 2005. See also Annex I. Organic waste during primary processing, transportation and storage of food 19000 – 32000 Food consumption by the population (incl. losses) 32000 - 45000 Total phosphate in liquid waste stream / waste water 33000 (19600 from food consumption; remaining 10700 from other sources) Table 5.2 shows the amount of phosphate present in some of the missing items, which are based on additional data sources and/or various assumptions. This overview is not exhaustive and excludes phosphate recycling (see section 5.4). Phosphate losses in the Netherlands are further reviewed in section 6.1. Pagina 44

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