Users of the pneumatic waste collection system deposit their refuse into waste inlets, located around the chosen operating area. Waste collection points are placed outdoors or indoors and are accessible 24 hours a day. There is one waste inlet for each type of refuse (which will typically be divided into mixed waste, organic waste and paper waste). The refuse is temporarily stored by the waste inlets until the next emptying cycle.
Users deposit waste into waste inlets, which can either be in doors or outdoors. The waste/recycling bags are stored temporarily inside the waste inlet above a closed discharge valve (DV). All full waste inlets are then emptied at regular intervals.
In densely populated urban areas there is increasing interest in the use of alternative waste collection systems, such as pneumatic systems that use negative pressure (vacuum) to move waste along underground pipes from inlet points where citizens deposit waste fractions to waste collection points outside residential areas.
