Denaisis. How you should sort your kitchen waste as early as 2024

A study already conducted

As of December 31, 2023, finished food waste thrown in your trash. The source of biodegradable waste will be generalized to all households and professionals in France. “2024 is tomorrow ”, points out the president of SIAVED, the joint union in charge of waste collection, treatment and recovery for three member intermunicipalities: the agglomeration community of La Porte du Hainaut, the community of communes Cœur d’Ostrevent and the Caudrésis-Catésis agglomeration community. “We will have to go very fast!”This is why a study prior to the introduction of a biowaste proximity management device has been launched through SIAVED. Entrusted to the Parisian firm of expertise, advice and engineering Elcimaï, this study recently gave the first solutions for SIAVED. After a diagnosis and a state of the art of waste management in the territories under the control of the union, three possible scenarios (see below) have been identified, on which the SIAVED will have to think to decide on the device. adapted.

Common sense and ecological urgency

This has been an obligation since 2016 for all large producers of biowaste (more than 10 tons per year) taken under the Grenelle II law in 2010 in France. The Energy Transition and Green Growth Act (LTECV) of 2015 has generalized the sorting of bio-waste at the source by 2025 for all other bio-waste producers, ie all households, businesses or communities. In fact, biodéchets are a third of new rubbish bins. However, these wastes (mainly kitchen waste and green waste) have the ability to “rot”, hence their designation as putrescible or fermentable. Today, these 18 million tonnes of biowaste per year in France are incinerated or buried. Treatment methods that lead to various pollutions (air pollution, global warming, soil pollution and threats to water resources). Conversely, the composting and methanation of these biowaste allows both the production of energy (biogas) and the return to the soil of organic matter (compost or digestate) adapted to the agronomic needs of the soil. So it’s common sense but also an ecological emergency. This will be the new SIAVED challenge in our territory in the coming years.

Two years to experiment and then deploy

According to the chosen scenario, you will have to invest between 5.3 and 5.7 million euros. ADEME aid is not high (from 30 to 130,000 euros). In operation, this new device costs between 1.5 and 2.6 million euros in fees annually depending on the model chosen. There will certainly be, in return, a decrease in residual household waste (82,000 t / year in 2020 at SIAVED) which will lead to a reduction in collection and treatment costs. The TEOM (tax for the removal of household waste) at 15.62% set up at the Porte du Hainaut in 2021 will participate in the financing. Many other sources of savings will have to be found, such as the reduction in the frequency of garbage collection depending on the system used and the size of the municipalities, the cessation of vegetable collection for the benefit of landfills, or a collection of garbage. glass in voluntary supply terminals only. And it will also be necessary to recruit (about seven people), as communication, training and monitoring of the project will be important and necessary (public information, composting assistance, distribution of equipment, etc.). An experience phase is expected in the first half of 2023 for 5 to 10% of the population. The final choice and the progressive deployment between the second half of 2023 and mid-2026.

Charles Lemoine, President of SIAVED.

The study carried out by an expert firm for SIAVED identified three possible scenarios.


The first, minimum, includes 95% composting to be done by individuals and professionals (except for the latter, those who produce more than 5 tons per year of biowaste and will have to use a private collector). But in order to introduce this sorting at the source with individual or collective composting, it will be necessary to invest heavily in equipment (composters, biosaws, pre-collection bags, composting workshops).


There is then an intermediate scenario for understanding compost for pavilion dwellers and collective dwellings in communes with less than 5,000 inhabitants. The others will have at their disposal voluntary contribution limits (city dwellers with more than 5,000 inhabitants, and individuals as downtown professionals) while out-of-town professionals will have to start composting for those who throw less. of 5t / year (voluntary contribution for those over 5t / year). It will be necessary to invest 700,000 euros here to equip in bins and bollards of voluntary contribution, in addition to the individual composters and bioshales.


Finally, the “maximum” provides for both composting for the inhabitants of individual pavilions and those living in collective housing in municipalities with less than 5,000 inhabitants, door-to-door collection for households living in collective housing outside the center. -city in municipalities with more than 5,000 inhabitants, as well as the inhabitants and professionals of the city centers of municipalities with more than 5,000 inhabitants, and finally composting for certain companies or communities outside the city center (- 5t / year ) or door-to-door collection (+ 5t / year).

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