Biogas – the superior alternative to landfilling and incineration
The BEKON biogas plants from Eggersmann offer the possibility of modern and efficient biogas generation by using dry fermentation technology.
BEKON dry fermentation plants achieve high and constant biogas production through the fermentation of solid Inputs (e.g. source separated organics, garden waste, organic fraction of municipal solid waste, manure on bedding and other stackable organic waste) while consuming very small amounts of energy for plant operation.
Advantages of the BEKON Process
- high biogas production
- dry digestate residues
- low parasitic energy demand
- highest plant availability
- high degree of automation
- low investment cost
- short construction period
- highest quality
- lowest susceptibility
- continuous production
- high profitability
- simple operation
- high safety standard
- variable plant size from 3,000 to >150,000 tons per year
- digestate residue is well suited for the subsequent composting
- no press water
The BEKON dry fermentation in proven design
Dry fermentation is a reliable and biologically stable process. BEKON plants are known for their particularly high economic efficiency and a simple and robust operation. Years of experience in turnkey construction and own operation as well as the continuous development of the processes convince customers worldwide of the quality of our technology, which is used for the expansion of composting plants and for new green field projects. The multitude of national and international references and high customer satisfaction reflects the success of the BEKON technology.
Optional features ensure customized solutions
Every project is unique. By supplementing standardized technology with optional equipment, we create cost-effective tailor-made systems.
You are planning to modernize your biological waste treatment plant?
Contact us now, we will gladly advise you! No matter if you are looking for a new construction, a process optimization or a retrofit of your plant - we are your competent partner!
For the BEKON process no pre-treatment is necessary. In order to increase throughput and biogas yield, a screen (80-100 mm), a slow-speed shredder or a bag opener can be used depending on the waste properties. A massive shredding and/or addition of water is not necessary since the input does not have to be brought into a pumpable condition.
Start of fermentation process
The fermenter tunnel is filled by a wheel loader. The process starts either by inoculation with digestate or by an aerobic self-heating, followed by increased percolation with anaerobic process liquid. The optimum process temperature (mesophilic or thermophilic) is achieved through the large contact surfaces of the floor and wall heating system and enables a very high decomposition of the waste material.
The intensive inoculation with digestate and / or percolate leads to a rapid start of the anaerobic digestion process and therefore to a high biogas yield. The gas mixture accumulating within the early fermentation phase can directly be delivered to the gas storage unit, since all dry fermenters are operated in a batch process with a phased starting point.
The large biogas storage unit buffers the discontinuous biogas production of the individual fermenters. To facilitate the fermentation process, the percolate is sprayed evenly over the waste material via a special nozzle system. The effective discharge of the percolate is ensured via the floor gradient to the back, drain channels and perforated drainage segments on the fermenter side walls. The percolate is collected in the heated percolate fermenter from where it is sprayed again over the waste material in the fermenter.
End of fermentation process
After three to four weeks, the biogas production in the fermenter diminishes. At this time, the percolation is stopped and the fermenter is aerated or alternatively inerted. The biogas-exhaust mixture is initially routed to the biogas storage until the methane content gets too low. The mixture then is flared by a lean-gas flaring system. Subsequently, the digestate is removed from the fermenter tunnels with a wheel loader. The solid digestate is a well-drained residue in a stackable consistency which can be further composted to a marketable product.
With BEKON MINI, the compact dry fermentation system for use with solid substrates (Quantity from 3.000 to approx. 10.000 t/ a), Eggersmann also has the right plant model for smaller annual throughputs in its range.
- Dry fermentation with minimal space requirements
- Low capital and operational expenditures
- Especially suitable for low input quantities
- Effective decentral electricity and heat generation
There are more than 60 plants with BEKON technology in operation.
BEKON Mini - Fermentation Plant Galmiz
Plant for Mechanical and Biological Treatment Poznan
Biowaste Fermentation Plant Dessau-Roßlau
Your are searching for an alternative to landfilling and incineration?
Speak to us today and find out about the cost-effective and environmentally friendly generation of energy with the BEKON process!