Objective
The installation enables the anaerobic degradation of organic pollution generated by the production unit of glyoxalic acid. This treatment which is designed to take place upstream from the biological station (using activated sludge) produces methane which is converted into energy by being burned in an oven.
Before starting this operation, the Hoechst company built 4 pilot plants to select the methane converter. The plant operating on the methane converter with anaerobic contact was chosen.
The results of the above tests have indicated the need to work preferentially on concentrated wastes in order to avoid the inhibiting and/or toxic effects of glyoxalic acid, sodium ions and nitric ions contained in the wastes.
A payback period (referred to the eligible cost) of 1.5 year is expected.
The measuring campaign which is in progress should emphasize the interest of this technology for the treatment of wastes generated by the organic chemical industries. This process has currently become commonplace within the agro-food industry.
The results of the measuring campaign are to come.
The installation consists mainly of a digester having a volume of 3,000 litres, of a motor-compressor with pallets, of a decanter, of a storage pump for waste water, of a recycling pump, of pipes linking the devices and of a gas pipeline transporting the methane from the digester to the boiler located in the boiler room.
Programme(s)
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Call for proposal
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DEM - Demonstration contractsCoordinator
76170 Lillebonne
France