BóDòMé • Industriestrasse D 2 • A-2345 BRUNN AM GEBIRGE
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Composter for Organic Waste



The recycling process is completely automatic – food waste is shredded, dried and sterilized without human intervention. Everyday usage simply involves the filling of the feeder with the waste to be processed. The only requirement of the operator is that they properly segregate the waste before filling the feeder. A list of products suitable for processing is contained within the instructions for use.
Garbage can be disposed of at any time, as needed throughout the day, and is subject only to the maximum processing capability of the bioreactor – a daily limit of 120 kg of waste.

Once a day, at 6 o’clock in the morning, the machine automatically ejects the recycled matter into a special container designed specifically for this use. The recycled matter is a high quality compost which research has shown is extremely beneficial for the healthy growth of a wide range of plants. Each 100kg of food waste produces approximately 15kg of compost which, when mixed with soil in a ratio of 1kg of compost to 4kg of soil, will provide a valuable source of fertilizer for your garden or greenhouse.

The only installation requirement for the KWM 100 bioreactor is that it should be placed in a ventilated room with a floor area of at least 7 m².

There is no need for any plumbing to remove fluid waste because as much as 85% of the water contained in the waste is evaporated into the atmosphere.


The EU legislation (EC regulation 1774/2002 and consequent regulations in member states) concerning catering and gastronomic waste, as well as different regulations regarding specific hygienic aspects of the handling, storage and transport of the kitchen waste, lead to that this waste can not be treated together with the general waste stream and substantial costs are consequently generated.

A study shows that the cost of kitchen waste removal and processing in most EU member countries runs between 0,23 € and 0,75 € per kilogram.

The Bioreactor can process up to 120 kg of wet waste per day giving gross savings of at least 30 € per day. The operating costs of the Bioreactor are 4 to 6 € per day (electricity). Taking into consideration yearly service and spare parts costs of approximately 550 € the resulting net savings, not including capital costs, are approximately 24 € per day or 8,760 € per year for the minimum waste removal cost scenario.
If the waste removal cost is 0, 75 € per kg the savings are 30,660 € per year.

Elimination of conventional wet waste removal cost: 120 kg/day x 0.25 €/kg = 30 € /day (savings)

Electricity Bioreactor cost: 50 kWh/day x 0.075 €/kWh = 3, 75 €/day,

other costs (service, replacement parts etc: ~1, 5 € /day

– total cost excluding capital costs are ~6 € /day

Net savings per day: 30 € /day – 6 € /day = 24 € /day

For the year: 365 days x 24 € /day = 8,760 € /year

When one considers the economy of a Bioreaktor installation also the simplification of the HACCP, handling, labour and storage costs should be considered because the alternative of conventional waste removal by specialized waste companies requires separate refrigerated storage, expands the HACCP procedure, thorough documentation, contracting and accounting. It is quite difficult to estimate these costs but one can safely assume them to at least 0,10 € per kg. With these additional savings of 4,380 € per year
the total net savings after an installation of a Bioreaktor exceed 13,140 € yearly!



In the unlikely case of your bioreactor developing any faults, or if you have any queries regarding its use and maintenance, please contact us and our professional technical support team will provide you with any assistance that you might need.


  1. Each device comes with a 2-year guarantee which includes the free replacement of parts and
    rectification of manufacturing faults. Please note however that the guarantee does not include problems
    arising from the improper use of the bioreactor or intentional damage.
  2. Please keep your receipt.
  3. If you wish to report a fault or other damage please contact our service team.

T:  +43.2236.379.078.14
F: +43.2236.379.078.21

E: services@bodome-group.com
I: www.bodome-group.com



T:  +43.2236.379.078
F: +43.2236.379.07821

E: headoffice@bodome-group.com
I: www.bodome-group.com


BóDòMé Head Office
Industriestrasse D2


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In this method polyolephines are subjected to the cyclical "cracking" process at an increased temperature and under the presence of a selected catalyst. The products of this process are carbohydrate gases - which are burnt in burners - and fractions of carbohydrates whose boiling point lies within the range of the boiling point of petrol and diesel (light heating oil). The heavy oil fraction produced in this process is directed back to the "cracking" process and it is not the final product of this method.


Small amounts of coke are a by-product containing the catalyst and the contaminants of the processed raw material.
A low sulphur content (normally below 20 ppm) and a relatively high stability are typical for components obtained from polyolephines. The quantity of the obtained components depends on the quality of the processed raw material, particularly on the share and type of contaminants, additives, admixtures etc.

A "cracking" installation consists of the following parts combined together:
• installation for melting and decomposition of the raw material;
• installation for processing the raw material according to the catalytic "cracking" method;
• installation for separating the individual product fractions by distillation;
• installation for dosing additives and stabilising the distillates.

At the beginning of the process the plastic materials are cut into small pieces and dried. Next, they are melted and decomposed in technological oil - normally it is the heavy oil fraction produced in the "cracking" method, whose boiling point is higher than the boiling point of diesel.

The decomposition takes place in one of the two mixing units M-101/M-102, which are heated up to 200°C (using hot oil or electricity). The plastic solution is transported by one of the two pumps P-101 A/B (due to the viscosity of the solution they must be cogwheel pumps) into one of the two "cracking" reactors.
There are two versions of this installation (one is shown in drawing no. 1 and in the other one the plastic materials are transported into the reactors). The products obtained in the reactors are further directed into the rectification column C-101, where the individual fractions are separated. The rectification column C-101 is a column with a powder filling (Bialecki rings from metal, 25 mm) with a side outlet. The gathering heavy oil fraction is taken up from the lower part of the column
It is normally transported by cogwheel pumps P-102 A/B into one of the two mixing units M-101/M-102 as technological oil. The excessive amount of heavy oil is directed back into the "cracking" reactors.
The vapours gathering in the upper part of the column are condensed in the water cooler E-101 and subsequently directed into the container V-101. The container V-101 functions as a separator, separating gases from the liquid condensate, and the as a reflux container. One of the two pumps P-103 A/B pumps one part of the condensate as a reflux from the container V-101 into the top of the column C-101 and the remaining part into the containers as a distillate - the petrol fraction. The diesel fraction is taken up from the "blind" bottom of the column.
Next, it is cooled down in the water cooler E-102 (or air cooler) and transported with the pump 104 A/B into the container park.

Temporary assumptions for determining the size of individual components of the installation:
- quantity of the distilled product: approx. 1000 t/month
- continuous operation: 3 8 hour-long shifts
- efficiency of the distillation installation: 1500 kg/h
- shares of the obtained products:
- gases 8%
- petrol fraction 12%
- diesel fraction 60%
- heavy oil fraction 15%
- coke 5%.



In case of failures, breakdown or simply if you want to ask questions concerning the operation and maintenance of the installation, we will be happy to provide you with our technical support.



T: +43.2236.379.078.14
F: +43.2236.379.078.21

E: services@bodome-group.com
I: www.bodome-group.com



T: +43.2236.379.078
F: +43.2236.379.07821

E: headoffice@bodome-group.com
I: www.bodome-group.com


BóDòMé Head Office,
Industriestrasse D2


Print version


Download PDF (166kB)