Green waste
Green waste is organic waste formed from residues from the maintenance of green spaces, recreational areas, private gardens, greenhouses, sports fields, etc. Green waste refers to dead leaves, grass clippings, hedge and shrub trimming, pruning residue, flowerbed maintenance waste, private garden waste collected separately or through recycling centers.
The national deposit of household green waste amounts to 4.5 million tonnes/year, or on average 75 kg/inhabitant/year (source Ministry of Territorial Planning and the Environment - 1999).
Pre-sort
Storage depends on the recovery sector and follows very precise specifications. Dumpsters containing green waste are most often protected against voluntary or involuntary deposits of “undesirable” waste to enable waste recovery. Regarding the conditioning and sorting of green waste, compostable waste (grass, dead leaves) is often separated from other larger waste (branches).
It is necessary to correctly label the waste bin, specifying the name of the waste producer and the nomenclature code.
Collection
The bins are emptied into dump trucks to be transported to authorized production centers.
Life cycle
Recycling and recovery
The most appropriate disposal method for green waste, due to their characteristics (structure, humidity level, carbon and nitrogen contents, etc.) and their degree of purity, is recovery by biological treatment. It makes it possible to recover organic matter and reduce waste flows to storage centers and incinerators.
Several techniques are possible depending on the two possible modes of degradation of organic matter.
- In the presence of oxygen: composting (the most common practice, it is applied to dead leaves, grass, etc.)
Compost is used in agriculture or by green space services. 10 m000 of fermentable waste produces approximately 3 m1 of compost.
- In the absence of oxygen: methanization (which occurs after grinding). It is a controlled anaerobic fermentation (in the absence of air) of green waste which results in the release of biogas, which can be recovered and used as fuel.
Biogas is used as fuel for automobiles or for the production of heat and energy.
The SCHROLL Group supports you in optimizing the recovery of your waste.
