Community waste treatment

Recovering household waste, worm waste and sludge

Collective Waste Treatment

A large portion of household waste can be treated through composting and co-composting. To obtain a homogeneous compostable product, the input characteristics of the waste are controlled: structure, size, chemical composition, moisture content,… The compost from household waste is primarily aimed at agricultural recovery.

Urban wastewater treatment plant sludge

Sewage sludge from wastewater treatment plants is difficult to compost due to its high moisture content and lack of structure. In order to obtain a quality standardized NFU 44095 compost, the sludges are mixed with co-composting materials. These co-composting materials consist of plant matter and possibly a fermentable fraction of household waste and/or animal manure.

Private and public green waste

Green waste originates from the maintenance and cleaning of private or public natural spaces. After removing non-fermentable products (plastic, soil, etc.), they are shredded and then directed to composting platforms. They do not require the addition of co-products for composting.

Residual household waste items

After selective sorting of household waste, certain undesirable or polluting remaining elements must be removed. It is only after such sorting that household waste can be composted to meet the stringent quality criteria imposed by AFNOR. In order to obtain a standardized NFU 44051 compost, it must be mixed with green waste.
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Types of waste

Discover the diversity of compostable waste: agricultural, industrial and municipal, and how to turn it into a valuable resource.

The VAL'ID solution

Explore VAL’ID’s innovative technology for fast, efficient composting without turning, guaranteeing a top-quality product.

Waste maturation

Understand the importance of maturation in composting, a key stage in obtaining rich, fertile compost that is beneficial to agriculture.

Waste recovery

Learn how composting transforms waste into a natural fertilizer, contributing to sustainable agriculture and environmental protection.

How does composting community waste work?

Composting waste from communities is a key lever in the transition towards a circular economy. This practice allows for transforming household waste, green waste, and sewage sludge into useful organic amendments, thereby reducing environmental impact while generating benefits for agricultural soils.

Balance and Preparation of Household Waste

Composting household waste requires careful preparation. The waste must be balanced in terms of size, structure, and chemical composition to ensure uniform decomposition. A meticulous sorting is also necessary to remove non-compostable elements, and the produced compost is intended to enrich soils in compliance with existing regulations.

Recovery of Urban Sludges

Sewage sludge, often high in nutrients, presents the challenge of high moisture content. Their transformation into quality compost conforming to NFU 44095 standard requires precise mixing with structuring co-compost materials such as plant waste or organic matter. This process improves porosity and promotes the aeration necessary for composting.

Integration of Green Waste

Green wastes collected during maintenance of public and private spaces become an excellent substrate for composting after a shredding step. They are rich in carbon and generally do not require the addition of co-products unless it’s needed to adjust the carbon/nitrogen ratio according to specific needs of the composting process.

Treatment of Residual Household Garbage

Household garbage, post-selective sorting, requires additional treatment to remove residual pollutants before it can be composted. The sorted organic wastes are then mixed with green wastes to produce a compost complying with NFU 44051 standard ensuring quality and safety of the final product for its application in agriculture.
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