Eggersmann
Eggersmann
The BACKHUS CON compost, dry, sanitise and stabilise huge volumes of material in the shortest time possible .
The BACKHUS CON lane turners are a symbiosis of our BACKHUS turning technology and the CONVAERO membrane. Together with a spigot floor, they form an extremely efficient system solution. Municipal waste with a high biomass content can be successfully stabilised in around 21 days.
The BACKHUS CON, together with the CONVAERO membrane, are specially designed for the most efficient composting and biological drying possible. Nevertheless, they can also be used in all other typical BACKHUS applications. Specifically, they are suitable for
Simply contact our sales department and we will be happy to go through the options with you and find a solution together.
Turning with the professionals!
The pre-shredded material is filled into lanes using a wheel loader. These lanes have a floor aeration as well as a drainage system. Afterwards the material is covered with the CONVAERO membrane. The natural composting process begins, whereby the necessary microorganisms are supplied with oxygen by the airation system. Regular turning achieves uniform drying or composting. In addition, inclusions without oxygen are effectively avoided so that no gas formation occurs. When turning, the BACKHUS CON picks up the membrane at the front and unwinds a new one behind it. This creates a nearly closed system.
Biological drying is mainly used in the treatment of municipal waste with a high organic content. It offers a whole range of important advantages , from volume reduction and stabilisation to increasing the calorific value. If you would like to know more about the advantages and the process of biological drying, you are welcome to read our page on the subject:
The CONVAERO membrane is semi-permeable. This means that it repels water (blue) from the outside, preventing rain from penetrating the material, for example. At the same time, it allows evaporating water and air to escape from the inside. However, unpleasant odours (yellow), germs (green) and process heat (red) are retained. The membrane therefore offers high emission control and particularly efficient hygienisation through the accumulation of natural process heat.
Blue = water · yellow = odours · green = germs · red = process heat
The composition of the input material and the previously defined goal of the treatment are decisive for the process duration: in the case of biological drying, this goal can be a precise moisture content and in the case of composting, a certain degree of decomposition. With our process, we have found that municipal solid waste with a moisture content of ~ 55 % can be dried to aruond 20 % within approximately 21 days. In this state, the material is already stable and the volume of biomass has been reduced by 50 %.
In principle, the membrane offers excellent emission control. However, the material has to be uncovered during the turning. But we have shortend this time window by automatically winding and unwinding the membrane to an absolute minimum. The new generation of the BACKHUS CON also has an enclosure to further reduce emissions. A higher level of emission control is not possible with mobile turning technology. The next step in emission control would be turning in closed buildings – for this we have the LANE TURNER in our product range. In addition, we also offer composting and biological drying in tunnel systems through our plant engineering department. In both of these systems, the exhaust air can be completely controlled via filter systems.
It is crucial that the material does not heat up too much and that ist does not dry out during the natural decomposition process. Otherwise, the microorganisms necessary for composting will die off. The lanes must therefore be turned more often and aerated more through the floor system.
The BACKHUS CON are an essentiell part of the Eggersmann FUEL process for the production of substitute fuel. The drying process ensures an exceptionally high net calorific value. The use of biomass also makes the RDF more sustainable, which even has a significant impact on the CO2 tax.
Our LANE TURNER drive on the lane walls – the BACKHUS CON drive over the walls of the lane. For that, the rotor is located inside the lane and turns the material, while the tracks drive outside the lane. This ensures optimum traction and extremely precise lane guidance.
Theoretically, you can also use the BACKHUS CON without a membrane and lane system – but we do not recommend this. The BACKHUS CON are specially designed for turning in lanes and therefore do not have track clearers, for example. Material can therefore get under the tracks and impair traction. We recommend the use of our BACKHUS windrow turners for turning windrows. With the BACKHUS A 75, we also have exceptionally powerful large machines and the extensive range of customisation options offers you many additional advantages.
