COMPOSTATION PROCEDURE OF LIQUID MUDS THAT INCLUDES A SEQUENTIAL FILTRATION THROUGH A CARBONATED SUBSTRATE AND INSTALLATION FOR THE PRACTICE OF THIS PROCEDURE.U NSUSTRATO.

摘要

A procedure for the treatment of liquid sludges comprising the composting stages, characterized in that it treats liquid sludges of dryness 8% that leave a storage silo of the purification stations and because it consists of: - the addition of a flocculant to sludge leaving the storage silo, - a sequential filtration stage consisting of an alternation (A1, F1 .... An, Fn) of (1 an) feeding stages (A .... An) of sludges that come from the silo and (1 an) gravity filtration stages (F1 ... Fn) through a carbon substrate (4), all sequential filtration stages being performed in the absence of a system of aeration, the sludge being fed by spraying the assembly and two phases being obtained at the end of a sequential filtration sequence, namely a solid phase consisting of the dehydrated sludge that has been filtered, and the carbonized substrate, and a phase l liquid consisting of the filtrates (12) that have been percolated through the carbon substrate, - a recovery and return of the filtrates in the header, - a set (3) of composting stages.