Screw tanks
Screw tanks are a new invention which have come into being with the third generation of mobile vacuum systems. These have been developed so as to further streamline waste handling and to ensure more reliable transportation out of the network of pipes and into the truck. The waste in the screw tank is screwed out into the pipe system. This speeds up emptying and reduces the vacuum in the vacuum truck so as to ensure quieter emptying. The screw tanks can be positioned ‒ one or more together ‒ in a site-built underground concrete chamber, a basement or other free space. If no space is available, Envac also supplies complete concrete chambers, SCTPM, with a screw tank and motor already installed. The screw tanks are available in different sizes and with different numbers of inlets.
Vacuum truck VL-5
Our new VL-5 vacuum truck has been developed to allow waste to be handled more effectively, in a more environmentally friendly way and significantly more quietly than was the case with earlier trucks. The driver handles the process himself and controls emptying of the various tanks from the truck. The waste is compacted in the truck and the transport air is cleaned before being released. A low vacuum results in quieter emptying. The extended load capacity allows several tanks to be emptied per pickup, resulting in fewer pickups having to be made and so less heavy traffic in the area. The VL-5 third-generation vacuum truck has been developed in cooperation with Scania and can also be run on biofuels.
Pipes
The tanks are connected to a pipe system of a diameter of 400 mm. The pipes are made of steel and laid underground at a depth of 50 cm or more.