Process for the treatment of aqueous effluents on biofilters or

Liquid purification or separation – Processes – Treatment by living organism

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210616, 210617, 210620, 210626, 210631, 210150, 210151, 210103, 210143, 210203, 210209, 210340, 210341, 210909, C02F 304

Patent

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057954810

ABSTRACT:
A process for the treatment of aqueous effluent with a view to its purification, the process including at least one stage consisting of causing the water to pass into the interior of at least one battery of several biological filters with fixed cultures or other devices with fixed cultures operating in parallel, characterized in that it comprises supplying the filters at constant flow and to cause the number of filters supplied and the number of filters not supplied in the battery, to be varied, in accordance with the total flow of aqueous effluent to be treated. Such a process allows the performance of biofilters and other devices with fixed cultures to be improved.

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patent: 5137644 (1992-08-01), Stone
patent: 5525230 (1996-06-01), Wrigley et al.
patent: 5589068 (1996-12-01), Nielsen

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