Renewable gas produced from sludge from waste water treatment plants
France’s first hydrothermal demonstrator...
A consortium of seven regional stakeholders met in Carene, the urban community in Saint-Nazaire, to put together France’s first “hydrothermal gasification” demonstration project (producing renewable gas from wet waste).
The main goals of this project are to test the process with sludge from Carene’s largest waste water treatment plant, and to optimise the technology’s design with a view to industrialisation. Beyond the almost-100% conversion of carbon into synthetic methane injected into the GRTgaz network, the partners also note the following benefits:
- sludge treatment: the quantity of final waste is greatly reduced (if heavy metals are present), or even eliminated;
- maximum local recovery of residual water (replacing the need for clean water), nitrogen and recovered mineral salts;
- total destruction of all types of micro-organisms (bacteria, viruses, pathogens);
- conversion into gas of all present organic micro-particles, including micro-plastics found in sludge.
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Renewable gases from wet waste
27 partners working together
