This plant is provided with particularly efficient smoke treatment and de-pollution systems for the protection of environment and health.
The smoke reduction system, carried out in all incineration sections, is composed of the following elements:
- a “precipitator”, which is the first treatment step of the smoke which comes from the boiler. Thanks to this, it is possible to reduce boiler ash, collecting and periodically eliminating it;
- a “dry-type” reactor, using sodium bicarbonate and activated carbon to reduce acid pollutants, heavy metals, dioxins and furans;
- a “bag filter”, which is the second step of smoke filtration to reduce fine-grained particulate. While it is working, the filter is covered by a solid layer of material which adsorbs the pollutants and improves the general performance of the reduction system. The solids collected in the bag filter are put in specific silos and periodically eliminated;
- a nitrogen oxide reduction system (NOx), called DENOX, which uses an ammonia conversion reaction producing nitrogen;
- a fan, ensuring the right speed of combustion smoke in its path through the boiler and the purification/filtration section, allowing for discharge in the environment through a 50-meter chimney.