La fraction en 2 dimensions (plat) est transportée par le haut via la séparation balistique. Par ce mouvement, la fraction en 3 dimensions (corps creux) est déplacée vers le bas. Les perforations dans les palettes de criblages permettent de séparer la fraction fine de la matière montante.
GORE® Cover tarpaulins are a fully integrated composting solution for the treatment of organic waste. Recognized worldwide as a leading brand for closed composting, GORE® Cover is a cost-effective process that controls and promotes the creation of a quality and homogeneous compost, effectively managing odours and emissions.
The tarpaulin maintains optimal moisture conditions, drains precipitation from the surface of the swath and protects it from drying out by the sun and wind. Aerobic humic fermentation is therefore optimized. Composting under tarpaulin also minimizes juice seeps.
The production of compost is a delicate balance between oxygenation and the temperature of the material. A real follow-up is necessary.
Oxygen is the key to the success of composting: it allows the development of aerobic bacteria and it is they that allow the degradation of organic matter while releasing heat.
In the absence of air, anaerobic bacteria develop and generate odorous gases that can be a source of inconvenience for the neighborhood .
Oxygen is essential to the life of organisms.
Good ventilation will result in a good decomposition of organic matter (if the other parameters are present). On the other hand, poor ventilation will trigger anaerobic processes that will produce bad odors! It is during the degradation phase (also known as "fermentation") that the mixture must be ventilated. Aeration can be done basically by flipping, or by means of static devices, such as aeration rails under the compost through which air is breathed into the mixture. This process reduces the time it takes to produce compost from more than 12 weeks to 6 to 8 weeks. In addition, in this configuration, the temperature rises faster and decreases more gradually.
The municipalities of the Fouesnantais country affected by the strandings are in charge of the collection of green algae while the Community of Commons is responsible for the treatment.
The solution for the treatment used by the Community of Commons is that advocated by the State, namely the composting of green algae by mixing with organic products from the composting of green waste. This process makes it possible to transform the waste that algae represent into a valuable product in agriculture.
Composting is carried out at the CCF treatment site: the Kerambris waste centre.
Total containment of composting, from fermentation to screening.
Processing up to 20,000 tonnes per year.
SYMEVAD has decided to build a new efficient and modern unit in the municipality of Vitry-en-Artois, comprising an organic recovery centre with fuel preparation from the cutting-edge wood fraction of plant waste in technological innovation, complemented by a wood energy platform for a total of more than 30,000 t/year.
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Co-composting unit of the sludge at the Orcières sewage treatment plant
Composting directly on the SITE of the STEP of SMTB Champsaur proved to be the most suitable solution following the prospective and financial study. The recovery of the sludge will be carried out, in particular for the re-vegetation of the ski slopes. this facility is particularly suitable for situations where the temperature difference between winter and summer may be extreme.
This station treats nearly 1,750 tons of sludge per year. It will retreat the effluents of the Step of the communes of Laye, Saint-Bonnet, Orcières and Chabottes.
Waste treatment is particularly complicated and expensive for the islands. For example, the Ile d'Yeu (Vendée) has to pay for the transport of its waste by boat to the mainland and to deal with extreme population differences between winter and summer, from 5000 to more than 25,000.
In addition, as the island is touristy, waste treatment must not cause noise, olfactory or dusty nuisances.
Since its creation in 1967, HANTSCH SAS has been developing its activities in the field of the Environment, in particular by initially offering communities and companies "turnkey" solutions for tool-carrying vehicles intended for maintenance work. roads, forests and natural spaces.