The process is very simple. Raw garbage, either loose or in garbage bags, is placed inside the drum of the converter either by hand, or automatically on the larger converters. The garbage is then macerated and crushed by the rotating blade inside the drum, the resultant friction created, causes the temperature inside the process to increase rapidly.
Once the temperature reaches 100ᴼC the moisture content of the garbage is released as steam. This steam is then drawn off from the process using a vacuum pump and is condensed back into water for either disposal into the sewerage system, used for irrigation or filtered for use in other processes.
With the moisture now eliminated the temperature is able to rise to just over 151ᴼC which then sterilizes the contents and destroys any bacteria and or pathogens that maybe present. The sterilizing temperature is maintained at 151ᴼC for 5 Minutes and is controlled via a heat sensing infrared water dosing system. The latent heat that is generated from the friction of the process now aids the final evaporation stage. The moisture is again drawn off from the contents, condensed and the product cools down naturally. The total process time is around 25 minutes. The result is a cool dry sawdust type material known as RDF (Refuse Derived Fuel). The garbage has now been reduced from its original volume by over 70% with a weight reduction (depending on original moisture content) of around 50%. Further volume reduction (up to 60%) can be achieved by pelletizing the RDF. These pellets can be used as fuel, as in most cases, depending on the original garbage content they contain a high calorific value.
CONVERTER is much more convenient than any other treatment plant not only for the cheaper disposal cost but also for its environmental and safety aspects:
- One operator can control several macchines
- No use of pressure or steam
- EC conformity
- Closed structure to avoid powder or odors
- Sterilization procedure even in case of breakdown
- Noise under law limits (65 a 80 dB)
- Protection against : vibraztions, shocks, fire and non-authorized access to the control panel
- Streilization level higher than an autoclave
- Completely automatic cycle
- Control by means of PLC
- Remote control and assistance
- No emissions
- Opportunity to eliminate water consumption
- Air reuse