The composting of organic waste is a means of recovering materials. Technically proven and regulated, it is environmentally friendly and agronomically beneficial.
Composting organic waste (green waste and sludge) produces a more agronomically balanced product than sludge.
SEDE is clearly committed to this logic of producing standardised compost, allowing sludge to transition from waste to product.
A stable compost, with very little odour and a nice earthy appearance. These criteria improve its social acceptability.
Composting : an opportunity for your organic waste
![Compostage de vos boues d'épuration et déchets organiques Compostage de vos boues d'épuration et déchets organiques](/sites/g/files/dvc2931/files/styles/crop_freeform/public/image/2018/01/compostage-des-dechets-organiques_0.jpg?h=cff2f8c9&itok=wS4FgSRi)
Composting sites for organic waste throughout France and Belgium : a local service for a flexible and long-lasting solution.
A standardised process for composting sludge
Standardised composting of sewage sludge is a process that meets many environmental expectations :
- Agronomic improvement : Fertilising elements are more stable in compost than in sludge (organic matter, nitrogenous forms).
- Material reduction : Approximately 50% loss of final volume compared to the initial mixture.
- Hygienisation of the product : With obtaining a very low-odour "compost".
- Valorisation of the material : By a return to the soil with an amending effect (stable humus) and fertilising effect (nitrogen, phosphorus, potash). The process is characterised by a 100% recovery rate (no final waste, as the screening rejects are fully reused as co-products).
- Carbon balance greatly improved : By the fertiliser savings made by farmers.
- Lower consumption of fossil fuels (gas for the manufacture of nitrogen fertilisers).
- Reduced extraction of natural resources (phosphate deposits).
![Le compost Tradisol est produit à partir de matières fertilisantes issues du traitement des eaux Le compost Tradisol est produit à partir de matières fertilisantes issues du traitement des eaux](/sites/g/files/dvc2931/files/styles/default/public/image/2018/01/Logo-compost-Tradisol_0.jpg?itok=vKLCH_4s)
The compost produced from sludge is eligible for the NFU 44-095 standard (compost obtained from fertilising materials from water treatment, subject to compliance with criteria set by the standard). It is marketed under the Tradisol brand name.
![Le compost Tradivert est produit à partir de matières fertilisantes issues du traitement des déchets verts Le compost Tradivert est produit à partir de matières fertilisantes issues du traitement des déchets verts](/sites/g/files/dvc2931/files/styles/default/public/image/2018/01/Logo-compost-Tradivert_0.jpg?itok=RRtNSBmb)
Tradivert compost is produced from fertiliser materials from the treatment of green waste. The composting of green waste produces green compost that meets the NFU 44-051 standard and is marketed under the Tradivert brand.
Treatment, composting and landspreading
![](/sites/g/files/dvc2931/files/styles/default/public/image/2020/08/Synoptique-compostage_0.jpg?itok=NTz26lBR)