Process for the biological treatment of effluents laden with impurities of urban or industrial origin and installation for the execution of the process.

摘要

"BIOLOGICAL TREATMENT PROCESS FOR EFFLUENTS CARRIED FROM URBAN OR INDUSTRIAL IMPURSES AND INSTALLATION FOR THE IMPLEMENTATION OF THE PROCESS". Process for the biological treatment of effluent-laden effluents of urban or industrial origin, characterized by the fact that it employs a single high-mass aeration basin (1) in which the raw or mechanically pre-treated effluent is mixed without prior decanting with a free activated sludge-like microbial culture evolving in a low aerated environment of the order of 0,1 to 0,2 kg O ~ 2 ~ / kg DB05 eliminated, the applied organic load being equal to or exceeding 2 kg DCO / kg MS.d, preferably 4 kg DCO / kg MS.d or more, the hydraulic residence time of the raw effluent within the single aeration basin being between 30 and 90 minutes, preferably between 40 and 60.