Most of the animal or vegetable industrial wastes may be upgraded using a composting or co-composting process.
In order to get a homogeneous compost, the control of the wastes' structure and chemical composition allows to check on the heterogeneity of the input materials.
The compost from industrial waste is mainly used for agricultural upgrading.
SEWAGE TREATMENT PLANTS' SLUDGES
The sewage treatment plant's residual sludges are difficult to turn into compost because of their high level of moisture and their lack of structure.
In order to get a compost of quality that complies with the French norm NFU 44095, sludges should be mixed with co-components.
These co-components are made of organic matter and possibly fermentable fraction of household waste and/or animal waste.
SLAUGHTERHOUSES' REFUSES
These wastes are subject to regulations in terms of size and temperature before going through a composting process.
The following wastes must be mixed with co-components: blood, feathers, internal organs, fat and stercoraceous materials from animals fit for consumption as well as parts of animals unfit for consumption.
HATCHERIES' SCRAPS
Hatcheries produce the following wastes: nonfertile eggs, eggshells, down/small feathers, dead embryos and chicks.
The european law allows these wastes to be turned into compost.
So as to get a standardized compost, these wastes must be mixed with co-components in order to comply with the current legislation.
