In the first instance, the decision to opt for an underground compactor is made on the basis of its financial benefits. But there are additional benefits too: a reduced impact on (public) spaces, fewer traffic movements and reductions in carbon emissions are important factors too. To evaluate the financial benefits, at Sidcon we use the “rule of three”. For a set of 3 containers versus 3 waste collections per week, the Sidcon compactor is better on a number of different fronts.
Fewer waste collections with the underground compactor
The essential difference between the underground compactor and a standard underground container is the greater capacity of the former. Because waste thrown into the unit is compressed, the underground compactor doesn’t need to be emptied as frequently. This also means that refuse trucks make fewer journeys. So the financial benefits are immediately clear and tangible. Fewer kilometres also mean less fuel and lower vehicle maintenance costs. Fewer journeys also lead to personnel savings, either in terms of payroll costs or higher productivity. With a shrinking employment market and increasing wages, this is a distinct advantage.
Capacity of the underground compactor by category
The illustration alongside gives an overview of the capacity per waste category. For waste derived from plastic, metal and drink cartons, the density factor of an underground compactor versus a standard underground container is 6 to 10. For residual waste and waste paper and cardboard the density factor is between 5 and 6. The composition of the waste has a major influence on the level of density and therefore varies greatly depending on the situation. Nevertheless, the numbers provide a good indication.
Less impact on outdoor space
Another motive for choosing an underground compactor is the reduced impact it has on the outdoor environment. Instead of four or five standard underground containers only one compactor is needed. Another advantage of this is the reduced number of journeys. In the city of Utrecht, where policy is focused on reduced traffic and more green, this was a major consideration. In order to achieve their green targets, 250 Sidcon underground compactors are now being installed in the city.
