The D-t-D collection (also called kerbside collection) consists on the direct collection of materials from individual households (or shops), either from door or kerb. Almost any domestic waste stream can be collected from the streets by a D-t-D system: residual waste, biowaste, packaging, paper and cardboard and glass.
The results of D-t-D collection achieved in municipalities could be superior in some cases, both regarding the amount collected and the quality of separation. Indeed, in areas with D-t-D collection, separate collection rates rise up to 60 – 85% regarding the total MSW generation, whereas other systems range between 20% and, at most, 50%.
The philosophy behind D-t-D is to turn separation at source into the most convenient option and discourage the delivery of great amounts of residual waste.
Implementation of D-t-D collection has proved very successful in areas with lower population density, where it is easier to identify the origin of the waste and recyclables. D-t-D collection systems require a change of habits on the part of the public, which could be achieved through an adequate communication campaign.
D-t-D collection models make possible to identify waste generators and therefore enable to implement fairer payment systems, such as PAYT (payment for generation, e.g. payment per bag or payment per bin).