The K-16 rotating biostabiliser is used for the dynamic oxygen treatment of:
- underflow organic fraction of mixed wastes (0÷80 mm fraction),
- sewage sludge,
- slaughterhouse waste of Category 2 and 3.
as well as for dynamic composting of the organic fraction from selective collection
(including waste from restaurants, canteens, supermarkets, etc.)
- up to 3.0 thousand Mg / year of feed material,
- after the prior preparation of the feed material by initiating the fermentation process and raising the temperature of the material in pre-stabilisation units or heaps, the efficiency of the device can be raised up to 4.0 thousand Mg/year
The minimum duration of a full cycle is 3 days – the device is periodically recharged and unloaded every 3 ÷ 4 hours.
Video showing the work of a biostabilizer
During the treatment process, the output volume of the feed material is reduced by up to 50%, depending on the type of material.
The humidity of the material fed into the device may not exceed:
- 50% in the in spring and summer period,
- 50% in the in spring and summer period,
If humidity exceeds the values given above, it has to be lowered by means of exact mixing with an adequate proportion of structural material (wood chips, sawdust, shredded cardboard, grass, dry leaves, wastes from fruit and vegetables, etc.) Maintaining the recommended humidity of the feed material eliminates the problem of emerging leachate.
- length – 12 000 mm,
- width – 2350 mm,
- height – 3850 mm,
- weight – about 20,0 Mg
- Thermal isolation allows for the operation of the device irrespective of atmospheric conditions
K-16 biostabiliser is a mobile device and does not require any foundations – it can be placed on a hard-surfaced site measuring approximately 5×15 m.
The device is powered by an induction motor integrated with a planetary gear unit and an inverter, which allows for achieving various rotation speeds required in the technological process.
Power supply of 10 kW is required to power the biostabiliser and the transporters
(loading and unloading one).
The maximum power consumption of the biostabiliser itself is about 1.5 kW.
K-16 is fitted with an electronic system for monitoring the emission of process gases (NH3 and CO2) and with an air biofilter mounted on the outlet.
Organic waste stabilisation in our device is an aerobic, dynamic process (that is, continuous aeration of the whole volume of the feed material is ensured, as well as rotation and mixing of the material), therefore there is no problem of excessive smell emission.
At the outlet of the air from the drum, electronic sensors are installed, monitoring the emission of NH3 and CO2. The measurement results are electronically displayed on the exposure display.
If an increase in the concentration of NH3 or CO2 takes place during the process, a supply fan is switched on, which ensures the aeration of the feed material and thus a decrease in the concentration of these gases.
Additionally, a biofilter is installed on the outlet of the air from the device. The biofilter is filled with activated carbon SAR-2 which is used for purification of air from various contaminations and for deodorization (removal of unpleasant smells). Its specific surface area is ok. 1000 m2/g, owing to which it is characterised by high adsorption and sorption capacity.
The biofilter protects against possible increased emissions of NH3 and CO2 into the atmosphere.
Owing to these solutions, the K-16 biostabiliser operates within the limits of emission permissible by the law, not exceeding the norms.
As K-16 is a device powered by slow-speed electric motor, it does not cause any particular noise emission or vibration.
Noise level generated by the device operating does not exceed the permissible norms and amounts to about 40 dB (within 1m from the device)
The maximum sound level of the operating supply fan measured within 1m from the device is 69 dB.
The temperature is monitored by means of sensors in the five chambers of the drum. The measurement results are electronically displayed on the exposure display and sent via a radio signal to the data base on a computer. The program is able to store and print out 3000 measurement results.
The temperature in the device reaches the temperature ensuring complete hygienisation of the feed material.
K 16 biostabiliser is a device designed for continuous operation. Each deactivation of the device (for example, at night, on days free from work) decreases its assumed efficiency.
- loading transporter
- supply fan allowing for operating in aerobic conditions
- control and measurement instrumentation
- electronic devices controlling the process,
- air biofilter
- The end product from the disposal of underflow organic fraction (0÷80 mm) should be subjected to aerobic stabilisation for 2 weeks and the obtained stabilised product should be run through a drum sieve to remove the non-biodegradable components and aerate the product thoroughly.
- The product from dehydrated sewage sludge can be used as a soil improver upon prior obtaining appropriate attestations.
- The product from slaughterhouse waste is suitable for briquetting and use as boiler house fuel.
By composting the organic fraction from selective collection, full-value compost is obtained.
- K-16 biostabiliser is a rotating mobile device with an insulated drum, owing to which it can operate in the open air (irrespective of the time of the year).
- The duration of the feed material stabilisation process in K-16 biostabiliser can be adjusted as needed, depending on the type of feed material and its humidity. During this period, the feed material undergoes constant relocation in the revolving drum, with free access of air.
- The use of planetary gear with an inverter allows for changing the rotational speed of the drum and its temporary arrest, in accordance with the technological requirements of particular feed material.
- The minimal period of dynamic feed material processing in the K-16 drum is 3 days ( for composting pure organic fraction, sewage sludge and slaughterhouse waste of Category 2 and 3).
- The process is computer-controlled with respect to temperatures and the content of process gases. When the stability of the process is disturbed, the fan supplying additional air is activated.
- The whole process takes place at the temperature of 45÷80°C, which ensures complete neutralisation of pathogenic agents contained in the waste.
Dynamic stabilisation, combined with blowing of air into the drum (ensuring aerobic conditions in the whole volume of the material in the drum) and the internal construction of the drum (compartments and elements mixing and shredding the feed material), allow for the effectiveness of the process and make the stabilised feed material achieve the AT4 indicator value of below 20 mgO2/g in the dry mass after a 3-day technological process in the biostabiliser and of below 10 mgO2/g in the dry mass after 2-week maturation in compost heaps.
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