Envac designs, installs and operates stationary vacuum systems for waste and recyclables. Using a vacuum system instead of an old-fashioned refuse room or waste container does away with problems with unpleasant odours, and nobody needs to come into contact with waste bags or containers.
This is how it works
Users throw their waste into ordinary, readily accessible inlets either indoors or out. Here, the bags are stored temporarily above a closed storage valve. All full inlets are then emptied at regular intervals. Automatic emptying is governed by a control system in a terminal building on the periphery of the area which is linked to the inlets via a system of underground pipes.
1) Emptying
When the control system senses when it is time to empty the inlets, a number of fans are started which build up a vacuum in the pipe system. First, a supply air valve is opened in order to allow transport air to enter the pipe system. Then the storage valves beneath the inlets are opened one by one. The waste bags fall down into the horizontal pipe system and are sucked away to the terminal.
2) Terminal
Waste at the terminal is sucked through a cyclone, where it is separated from the transport air. It then falls down into a compressor where it is compressed and then fed into a sealed container. The transport air is released via a flue after having passed through dust and cleaning filters and silencers.
Inlet design
The inlets are available in a number of designs. They can be placed on every floor indoors, or in the doorway at street level, or even outdoors. They can be wall-mounted or freestanding, both indoors and out.
Custom solutions
The various Envac systems are customised and adapted to suit each individual project. Subsequently extending the system to include adjacent properties or areas is no problem. This system can be installed on new build sites as well as in older areas, in individual properties and in rows of terraces.