Gas resulting from the fermentation of landfilled waste in the absence of air (methane/ carbon dioxide).
Biological recovery
Organic waste processing technique using composting or methanisation techniques.
Biolysis®
Procedure to restrict sludge production by 30 to 80% at purification stations. Deployed at the biological basin, Biolysis® (translated into 2 products) causes a chemical or enzymatic «stress». Two actions that make part of the sludge biodegradable, and restrict the development of the others.
Bond
a tradable debt instrument issued by a company, a local authority or a government, returning an interest, reimbursable on a fixed date and in accordance with a predefined amount.